The Time for POTS Replacement Has Come

By: John Shepler

Nobody likes change when it is forced upon them. But change we must as technology relentlessly advances. On its way out are innovations from the gilded age. The incandescent light bulb? Gone. The telegraph? Long gone. The telephone line? You guessed it. It’s going fast.

POTS is Kaput!
Alexander Graham Bell’s fantastic invention, the telephone, is going stronger than ever. But, it has morphed into technologies that weren’t dreamt of by Bell or Watson. What’s on the way out is the century-old connection system of twisted pair copper wires and the instruments that connect to them.

Plain Old Telephone Service or POTS is the current jargon for standard telephone lines consisting of two small diameter copper wires connected to a telephone company office that provides the power, switching and signaling needed to allow any phone to talk to any other phone around the world.

Why Ditch It?
There are two answers. Cell phones and Computer Networks. Neither have any use for POTS interfaces. Residential users have long embraced their smartphones to the exclusion of most everything else. Fewer and fewer are willing to pay the phone company ever increasing fees just to have an old-timey desk or wall phone available just in case the cell tower goes out.

Businesses have been on a similar trajectory. Mobile phones have become important business tools, but the desk phone still has a lot of value. The only difference is that the desk phone often connects to the computer LAN rather than its own unique network. This enables a lot more calling features, including a mash-up of desk sets, smartphones, laptops, PCs and tablets.

With this every increasing switch away from POTS, the phone companies find themselves with huge stockpiles of lines and switching equipment but less and less revenue to support them. That’s why the petitioned the FCC to let them decommission their copper resources and convert the central offices to data centers in high demand by AI and other computing needs.

Why Copper Retirement is Actually a Problem
Not everybody is on-board with chucking a perfectly good technology that is serving them reliably. Lots of businesses still have multiple POTS lines with in-house switching. Larger systems use a digital connection called PRI that multiplexes 23 POTS lines into a par of… you guessed it…twisted pair copper wires. Yes, as POTS goes away so does PRI and its cousin, T1 lines, that use the same wiring.

Another problem is FAX. Traditional FAX machines were designed for POTS and don’t like packet switched networks such as the Internet. Other systems specific to elevator phones, fire and burglar alarms, credit card verification, gate access, and emergency call boxes also were designed for POTS and only POTS. You don’t just plug these into your LAN and call it a day. So, what to do?

POTS Replacement Options
While POTS, PRI, T1, DSL and other copper line connections are rapidly fading into the sunset and not likely to return, there are replacement solutions available. Some popular ones are based on LTE cellular with dual SIM cards, battery backup, and failover Internet access. Also important is that a POTS replacement box provides the same signaling and RJ-11 connector that you’d get from a telephone line wall jack.

On a larger scale, SIP trunking is a replacement for carrying multiple phone lines used in offices and call centers. It can be provisioned over the Internet or, better yet, through a direct connection to a cloud phone service provider that interconnects with the Public Switched Telephone Network.

Have you been notified that your POTS service is being discontinued or greatly increasing in cost? It’s time to consider moving on with a new network based system or a POTS replacement appliance that simply drops in place of your old phone line. Get expert technical advice and pricing on POTS replacement solutions now.

What Replaces DSL, T1, ISDN PRI, EoC?

By: John Shepler

Have you seen recent cost increases for your copper-based telecom services? Did you even get a letter saying that service will be discontinued? This situation will only get worse, as telcos sunset their aging copper wire assets in favor of more modern technologies such as fiber and wireless. It’s time to make a change.

The Copper That Isn’t Going Anywhere
The copper that’s in trouble is twisted-pair analog copper telephone lines. They started the electronic communication revolution over a century ago and have run their course from innovation to obsolescence. There is another copper network line, however, that is still going strong. That is cable broadband using coaxial copper cable as a curb to premises connection.

The copper nature of cable services is something of a fooler. The vast majority of the network is fiber optic based. Only the last few hundred feet is the well known RG-6 terminated with an F-type connector. You might think of this wiring as old-school, but with the latest DOCSIS modems, it can easily deliver Gigabit broadband up to 10 Gbps.

Cable companies offer television, broadband and telephone service over the same cable line at a very reasonable cost that is attractive for small businesses, especially those that can use the TV feature for their customer waiting rooms.

Fiber Optic: The New and Improved Copper
The telephone and network industry standard that is replacing twisted pair copper is Ethernet based fiber optic service. The original standard, SONET, is still the backbone of many networks, but has actually transitioned from carrying channelized telephone calls to packet based Ethernet network traffic. Newer networks are all Ethernet, to reflect the standard Ethernet protocol used in the majority of digital networks worldwide.

Ethernet over Fiber has the advantage that it plugs directly into company routers and is vastly scalable, from 10 Mbps to 10 Gbps just about everywhere, and up to 100 Gbps in many metro locations. Fiber takes over from copper data services, include DSL, T1, DS3 and even the newer Ethernet over Copper. EoC was meant to provide higher bandwidth using the same twisted-pair infrastructure, but is falling victim to the decommissioning of the copper bundles themselves.

Business telephone, which standardized its own analog and digital networks, is largely switching to a computer networking standard of Voice over IP or VoIP. This offers the benefit of supporting many newer technology features and allows computers and phones to share the same company Local Area Network.

To make VoIP work, your phones need to connect to the Public Switched Telephone Network to make and receive outside calls. This is done using a standard called SIP or Session Initiated Protocol that runs on the network and connects to your phone service provider over an Ethernet WAN connection, using fiber. Both the Internet and direct connections can be employed. SIP trunks replace analog phone lines and ISDN PRI trunks to carry telephone traffic to the PSTN.

The Special Case of POTS Replacement
In many cases, the move to fiber optic private line and Dedicated Internet Access will handle business needs for voice, video and data traffic. There are special cases of FAX, fire alarms, burglar alarms, elevator phones, analog point of sale systems and some others that are specifically designed to phone company standards and don’t work well on packet based networks, such as the Internet.

For these uses, you may want to look into specialized POTS (Plain Old Telephone Service) replacement options. These usually work wirelessly through private connections to the LTE cellular phone network and don’t traverse the Internet at all. An advantage of POTS replacement equipment is that it connects directly to the systems you already have.

Fixed Wireless Where There Is No Fiber
The day may come where fiber is everywhere, but today were are still in the build-out phase. Fiber is going into the ground at a rapid pace, but in more rural locations are still waiting for access. Even metro areas that don’t have lit fiber installed may be faced with huge construction costs to connect to the fiber access points.

The alternative is to skip the fiber but get high speed Ethernet bandwidth using Fixed Wireless Access. FWA is similar to cellular broadband but is intended to connect to in-house networks rather than cell phones. In fact, the major cellular companies are in competition to offer 5G Fixed Wireless broadband service to both residential and commercial users.

Other wireless companies, often called WISPs for Wireless Internet Service Providers, don’t handle cell traffic but have towers that serve a limited area with wireless Internet access.

Other microwave-based FWA providers focus on business customers with high bandwidths that can reach 10 Gbps. This can be private line as well and Internet service. An advantage to business FWA is that a small dish or other antenna can be installed on your building for reliable operation and service can get started in days rather than weeks or months for fiber construction.

Are you facing a loss of your traditional DSL, T1, ISDN PRI, EoC or analog telephone service and need replacement soon? If so, you may have an opportunity to upgrade your service and save money at the same time. Check out telephone and network replacement options now.

When Only T1 Will Do

By: John Shepler

In the age of gigabit fiber connections, the venerable T1 line might be thought of as a relic of the past. Not at all. T1 service is alive and well. It might even be exactly what you need right now in the way of bandwidth and affordability.

Why Would Anyone Want a T1 Line?
T1 is the most mature, most deployed and most available of the telecom line services. You might think that Plain Old Telephone Service (POTS) would be the leader in that category. It was. POTS is giving way in many organizations to newer premises VoIP and telephony in the cloud. That still leaves what used to be the POTS lines connected. What are they good for? Think: T1

T1 lines are amazingly versatile. They make perfect telephone trunks for channelized T1 phone, ISDN PRI and even high quality VoIP. They are almost certainly available at your location, wherever you may happen to be. Plus, T1 is readily affordable by just about any size business.

The T1 Telephone Line
Did you know that T1 actually started out as a telephone trunking technology? If the telco companies didn’t have a burning desire to consolidate the mass of wiring that interconnected their switching centers, T1 might never have come about. In the beginning, it was one telephone conversation per pair of wires. Then the phone companies found a way to send multiple conversations down the same pair simultaneously using a method called carrier telephony. It works like the radio band. Each conversation had its own assigned carrier frequency separated from the others so they wouldn’t interfere. This is the analog way to get the job done.

The breakthrough that was T1 involved the conceptual change from analog to digital. By digitizing the phone conversations, you could send 24 of them down the same pair of wires and they wouldn’t interfere. What’s more, digital technology got rid of all that noise and crosstalk that analog long distance lines were famous for in the first part of the last century.

A channelized T1 telephone line consists of 24 time division multiplexed segments or channels that are synchronized at the transmitting and receiving end. Each analog phone signal is digitized into 8 bits by 64 Kbps, which preserves the call quality. What grade of wiring do you need to transmit these calls? Ordinary twisted pair telephone cable will do just fine. With signal regenerators every mile or so, a T1 line can be stretched as far as you like.

ISDN PRI Telephone Trunks
T1 telephone lines are used by in-house PBX business phone systems. In recent decades, that technology has been upgraded to something called ISDN PRI or Primary Rate Interface. It’s the same T1 line, but with a slightly different format. ISDN PRI provides 23 separate phone lines plus a control and signaling channel that runs the system. This is the preferred option for call centers because of its fast connection times and high voice quality. Multiple T1 lines can be installed to most PBX systems to match the number of outside lines needed.

T1 for VoIP
VoIP or Voice over Internet Protocol is a different method of achieving the same phone service. VoIP was designed to be compatible with computer networks rather than a unique telephone standard. Even so, VoIP trunks, called SIP trunks are needed to get the phone calls to the telephone service provider in the cloud. Unchannelized T1 lines work great for this because they are highly reliable and offer enough bandwidth to carry two dozen or more simultaneous telephone conversations.

T1 Internet Lines
T1 for Internet access, with its paltry 1.5 Mbps bandwidth might be considered laughable in this age of gigabit broadband. It’s not so funny when your business is on a farm or so far out in the wilderness that you are lucky to have a landline phone. Those landline phone wires can also carry T1. That means if you can get phone service, you can get at least T1 broadband where there is no fiber or even cell towers for miles.

Is 1.5 Mbps truly a problem? It likely is if you want to transfer HD video production. Not really, though, if you have a small business and need the line for credit card verification, a connection back to a franchise office, or just email and casual web browsing. You can increase this bandwidth by combining, called bonding, multiple T1 lines together. This will give you anywhere from 3 to 12 Mbps, depending on the number of lines you bond.

How About The Cost?
People who think T1 is expensive remember back a decade or two, when a single T1 line would set you back at least a grand a month. Today, that figure is more like $200 to $300 in most cases. It still depends on how much competing service is in your area and how far you are from the telco office. Is this expensive? Business grade cable broadband is also priced in that range, but with “up to” higher advertised bandwidth… if you happen to be next to where the cable line runs. Even then, cable is shared bandwidth while T1 is dedicated to your particular company.

If your need is for highly reliable PBX telephone lines, point to point private lines, dedicated Internet access or rural broadband applications, T1 might still be the optimum service for your company. Check out T1 and bonded T1 pricing and availability and compare with your alternative service options.



Note: Products with the humorous theme "Wan Man" shown on this page are available through the Gigapacket Zazzle Store.

Business Phone Line Options

By: John Shepler

One thing every business, large or small, needs is at least one telephone line. Phone lines may seem pretty mundane, but you may have more options than you think. Are you sure that you have the right phone line for your business?

Plain Old Telephone Service
The historical phone line that we’re all familiar with is the analog phone line, also called POTS for Plain Old Telephone Service. It’s that vanilla.

POTS lines are as simple as they come. They consist of a single twisted copper pair that runs from a standard RJ-11 phone jack on your wall all the way back to the telephone company central office. The phone conversation is carried by a varying current in the wires.

What you may not realize is that POTS is a self-contained phone system. Phones were traditionally made of passive electrical components. They got their power right off the phone line… and still can. The value of this is that even if the electrical power goes off at your location, you still have phone service.

What’s happened lately, however, is that even single line phones have gone electronic and require AC power supplies and/or batteries to power the circuitry. This is especially true of cordless phone systems with multiple handsets. You can still get dial tone during a power outage, but you need to have a backup battery supply to operate the phone, not the line.

Multiple LInes
You are not stuck with just a single POTS line. You can have as many as you want. Mind you, there is no economy of scale. There is a fixed price for each line whether you have one phone per line or share the outside lines using a Key Telephone System or PBX.

Wireless as an Option
Can you get rid of the telephone line completely? That’s what cellular phone service is all about. No more “landline”. Everything is done with cell towers instead of wires. Wireless can work just fine for independent professionals who are always out of the office anyway. With a data plan you can have both Internet and voice telephony on the same device. You can enhance your mobile setup with an incoming toll free number, fax transmission and reception, and international dial-around calling. Shared plans can support a small office as well as a single user. Operations larger than that will still need wired landlines.

Moving up to Trunks
A telephone trunk is multiple phone lines coming in on a single cable. There used to be analog trunks, but that technology has all gone digital. The most popular trunks are T1, ISDN PRI and SIP.

T1 lines were devised as replacements for multiple analog POTS lines. Instead of separate wires, T1 lines are multiplexed to divvy up the available bandwidth into 24 independent channels. Each channel can be thought of as a separate phone line.

What if you already have a dozen phones and want to replace all those separate phone lines with a single T1 line? Chances are that you’ll get the same or better service at a lower monthly cost. A box called a “channel bank” handles the conversion between T1 channels and analog lines. Just plug your phones in like you always have.

T1 vs ISDN PRI
ISDN PRI or Primary Rate Interface is a variation on the T1 line. It uses the same channelization scheme, but dedicates one channel to dialing and switching for all the others. That means you have a maximum of 23 outside lines available on a PRI trunk. The tradeoff is that your phone calls will switch faster on ISDN PRI. That’s important for call centers and others who need highly efficient telephone operations.

Most PBX systems now have the interface circuitry for T1 and ISDN PRI already built-in. You simply plug in the trunk line and the system handles all of the necessary conversions.

SIP Trunks
Many, many companies are considering switching to VoIP technology or have already made the move. SIP trunks are the natural complement to VoIP phone systems. Their advantage is that they use the same protocol, SIP, as the phone themselves. Remember that VoIP or SIP phones connect directly to an Ethernet LAN, usually shared with computers, printers and other network devices. The SIP trunk extends the network so that it also connects to the VoIP service provider.

Like T1 and ISDN PRI, SIP trunks support multiple simultaneous telephone conversations. The difference is that these conversations consist of packet streams all combined on one line instead of breaking the line into separate channels.

Another advantage of SIP trunks is that they can carry Internet traffic as well as phone calls. After all, everything is in packet format. What’s important is that the trunk be setup to prioritize telephone traffic over data traffic to ensure voice quality. This is called Class of Service or Quality of Service.

What phone line is best for your business? One way to find out quickly is to get multiple competitive quotes for everything from POTS through SIP Trunking as business phone line options.

The 3 Types of VoIP Lines for Business

By: John Shepler

Businesses large and small have been migrating to VoIP telephone technology for years now. Some are delighted with the move and have never look back. Others feel like they’ve lost something in the way of performance. The calls are often muddled and it’s hard to carry on a two way conversation. Would you believe that its the exact same technology involved? Why is it that VoIP telephony can range from excellent to unacceptable? Let’s take a look.

What’s VoIP
VoIP or Voice over Internet Protocol is a means to convert telephones into computer peripherals. The reason to do that is both to save money and enable applications that just won’t work on the old style telephone network. Network voice is a powerful tool, but can more easily be degraded that simpler analog phones.

Old School Phone Systems
Business phone lines are sometimes called POTS for Plain Old Telephone Service. They consist of twisted copper pair wires that run directly from the phone set all the way to the telephone company. Each phone has its own set of wires. Once you get more than a few phones, however, you face a mounting phone bill since the telco charges you to make internal as well as external calls.

Companies get around this by installing their own phone switches. Small systems use Key Telephone Systems where multiple outside lines are available on each phone but you can also call within the building on your own wiring. Larger companies install PBX (Private Branch Exchange) switches that manage a pool of outside lines that can be assigned to any phone as needed.

If you only have a couple of phones, each with their own line, the phone company takes care of all the switching for you. With many phones, you become your own little phone company for inside calls. That means you have to take care of all the special phone wiring and the Key or PBX switching equipment. Plus, you have to pay for multiple outside analog lines or a digital PRI trunk to get to the public telephone system.

How VoIP is Different
With VoIP, each phone plugs into your company LAN. That gets rid of the second special phone network. You still need something to switch the calls between phones. This can be a VoIP PBX or IP PBX that you have in-house. It can also be a much larger hosted PBX system from a hosted VoIP service provider. Hosted means that a specialized company “hosts” or run the system. You are one of many clients that they host. It’s pretty much like buying web hosting. You simply pay by the month for service instead of having to install and maintain your own equipment.

VoIP Phone Line Needs
All VoIP phones connect to a local network. This can be a small home office network that has only a computer, WiFi router, VoIP phone adaptor (for a regular phone) and broadband modem. Or, it can be an extensive corporate LAN that is bridged into multiple business locations nationwide and even overseas. The principles and the requirements for high quality performance are the same.

Since the network is shared with many phones and other computing devices, it take some doing to make sure that you get high performance. With dedicated analog lines, that’s the phone company’s problem. With VoIP, it’s now your IT problem.

What’s needed is plenty of bandwidth to accommodate all the phones and other devices. But that’s not enough. You need to give the voice packets priority over data because phone calls will start sounding muddled and choppy long before you notice that the file is loading slower. The network also needs low latency, packet loss and jitter to be transparent to the packets carrying the VoIP digitized phone conversations.

3 Types of VoIP Phone Lines
All analog phone lines are alike. All ISDN PRI trunks are alike. VoIP phone lines can be quite different. They range from Internet VoIP to SIP Trunks to MPLS private networks.

Using the Internet as Your Phone LIne
The low end of the market, which keeps costs low for home offices and small businesses, uses a broadband Internet service to connect to the VoIP service provider. You can share your broadband connection with a couple of computers, a WiFi router, and a few VoIP phones. You’ll need a router that creates CoS (Class of Service) to prioritize the phones or the computers will interfere with your calls. Sometimes the service provider will give you an adaptor that does this.

The advantage of using the Internet as a phone line is that it’s cheap. You probably already have broadband for your computer. The lure is to save money by “eliminating the separate phone line.” The downside is that the Internet was never designed for telephony. It was intended to reliably transport data files. There is no prioritization of voice on the Internet and most access lines, like DSL, Cable, Satellite and Cellular, are shared broadband. It’s a cost vs performance tradeoff. You may find that some calls sound perfect but others break up or sound muddled. It all depends on what else is happening on the Internet while you are making your call.

One way to improve Internet VoIP is to use a dedicated Internet access (DIA) like T1 or Ethernet over Copper. This keeps your neighbors from disrupting your calls while they download large video and software programs, but you are still subject to network congestion on the Internet itself.

Private Line VoIP Service
Companies that depend on high quality phone service for customer support and employee productivity usually sidestep the Internet in favor of something more predictable. The outside line that compares most closely to the legacy analog and PRI lines is the SIP Trunk. This is a digital broadband line, but it is a private line that is not shared with others. It’s called a SIP trunk because it supports SIP or Session Initiation Protocol, the switching system for VoIP calls.

A simple SIP trunk is a T1 line that runs from your network to your service provider. It supports up to a couple dozen simultaneous phone conversations or a combination of phone calls and Internet. The Internet service has a lower priority than the phone calls and uses whatever bandwidth isn’t needed for the phones at any given time. Smaller companies that don’t have dozens of phones find this is a great cost saver compared to maintaining separate phone and broadband lines.

Larger SIP trunks are also available for bigger companies or call centers. Both copper and fiber optic bandwidth is available to support as many calls as you need.

Voice over MPLS Networks
Major corporations generally have many business sites located around the country and even in other countries. They still want any employee to easily call any other employee without paying long distance toll charges. They also need to make outside calls to anyone with a phone.

A sophisticated solution is called VoMPLS or Voice over MPLS networks. MPLS is a private network arrangement with a regional, national or international service footprint. The network operator ensures that each paying customer has the necessary Class of Service, bandwidth and low latency, packet loss and jitter that they need for high performance.

VoMPLS works a lot like VoIP using SIP Trunks. The difference is that instead of having to run dedicated private lines among all your locations, you simply need an access line from each location to the MPLS network. This can give you a major cost savings, especially on those long international connections, while maintaining high network performance.

Are you in search of a better telephone solution, to reduce costs, increase available features or both? If so, there are VoIP telephone solutions you should take a close look at.

Circuit Switched vs Packet Switched Networks

By: John Shepler

There have been two major network technologies slugging it out for supremacy over the last few decades. The first is the original telephone architecture that has served us well over the last century of the industrial age. The newcomer is the computer-centric architecture that has been the driver of the information age. You may also know them as circuit switching and packet switching.

While it’s likely that both technologies will continue to coexist for some time to come, we’re clearly at an inflection point. From here on out, packet switching will dominate on every network from copper to fiber to wireless. Let’s see why that is.

What is Circuit Switching?
Circuit switching is a telephone technology. It’s a logical system for that application. Telephone calls require a connection between two devices for a given amount of time. Specialize phones like intercoms can be connected permanently or “nailed up.” For general use it is desirable that any phone can be connected to any other, but needs that connection only for the duration of the call.

That’s the function of the central office switch. It physically ties together the lines running to any two phone sets using electrical switches. At one time multiple phones in a neighborhood would share a line to the central office. This was called a “party line” and allowed anyone to eavesdrop on their neighbor’s calls. As automatic dialing was introduced, the party line fell out of favor and each location had its own phone line with its own phone number. When phones where connected, they had their own unique electrical circuit. This is where the term circuit switching comes from.

Circuit Switching For Digital Lines
When long distance telephone transmission migrated from analog to digital, the concept of circuit switching was kept. Take the T1 telephone trunk, for instance. Each T1 line is segmented into 24 separate channels. Each of those channels carries one phone conversation exactly as if they were on separate wires.

T1 lines found a new application to interconnect computers to let them “talk.” Each telephone channel only supports 64 Kbps of data… dial up speed. A broadband circuit can be created by combining all the channels to make a single 1.5 Mbps transmission line. Like the original analog telephone lines, the circuit from computer to computer needs to be connected or “nailed up” as long as the machines want to talk. Circuit switching connects point to point, but what if you want many machines to be able to communicate at the same, or nearly the same time?

What is Packet Switching?
Packet switching was developed to allow information to be sent among many machines. In a way, it’s the party line re-imagined. Unlike the old analog party line, multiple “conversations” need to occur simultaneously without interference. You can’t do that if all devices simply spew bits onto the line indiscriminately, but you can if each if the bits for each network node are packaged into self-contained units… packets.

Packets contain chunks of data. They also contain address bits that tell where they are coming from and where they should go. This is what makes packet switching possible. Instead of dialing a phone number to determine what circuits should be tied together, network switches and routers direct the packets on their journey according to the addressing contained in the packets. You can have packets from many different devices on the network line at the same time as long as the traffic is well controlled and each packet tells where it needs to go.

Circuit vs Packet
For a long time now, computer based packet networks and telephone based switched circuit networks have coexisted. The largest circuit switched network is the PSTN or Public Switched Telephone Network. The largest packet switched network is the Internet. What’s happening now is that these networks are being combined.

It is more efficient to have one network instead of two to maintain and there are additional services you can have when voice and data share the same network. But, which technology is best, circuit or packet switching?

And the Winner Is….
Packet switching is clearly winning out and has been since computer traffic has exceeded voice traffic worldwide. Computer traffic now includes digitized video which is more dominant and voice and data combined. All of these share the Internet and private networks using packet switched technology. As wireless voice moves from dedicated cellular to packet transmission over 4G networks, the transition from circuit switched networks to packet switched networks will be complete.

What network connections do you need to support your business or organization? There are many options from analog POTS to T1 digital trunks, to dedicated copper and fiber optic Internet access and multi-location Ethernet and MPLS networks. Get pricing and availability now.

WAN Network Connections From Copper to Fiber

By: John Shepler

LAN, MAN and WAN speeds continue to rise as content demands more and more bandwidth. This is increasing pressure on both copper and fiber based telecommunication networks for more frequent speed upgrades. Let’s take a look at what the options are for both traditional TDM (Time division Multiplexing) and IP (Internet Protocol) networks.

The Legacy of Copper Telecom Lines
Copper has been the mainstay of electronic communications, starting with the telegraph and then the telephone networks. The telegraph, of course, is long gone. The telephone is undergoing a technology shift where voice is becoming a converged network service. With the implementation of 4G LTE wireless, even cellular phone will soon move away from voice only channels to integration with data.

Clearly, analog POTS (Plain Old Telephone Service) is in its twilight years. What will remain for decades to come is its installed base of twisted pair copper lines that connect to nearly every building, commercial and residential. That copper still has value because it can transport digital signals as well as analog.

Digital T1 Lines
The oldest digital protocol for data transmission on twisted pair copper (not including telegraph) is still going strong. It’s the T1 line used for telephone trunking, point to point data, and dedicated Internet connections. T1’s history is that it was developed to transport multiple phone conversations digitally using existing telephone cabling. T1 can transport service over wide areas using signal regenerators to clean up the signal every 6,000 ft. You can get T1 nearly anywhere you can get landline phone service. The one limitation is its 1.5 Mbps bandwidth.

While 1.5 Mbps used to be considered broadband, it’s no longer adequate except for PBX telephony, casual Web access, email and point of sale credit card verification. This bandwidth is similar to 3G wireless. Wireless is rapidly moving to 4G wireless, with speeds an order of magnitude higher. Wired services are also moving to 10 or 15 Mbps as a minimal requirement.

Bonding T1 Lines & Ethernet over Copper
T1 is enjoying continued usefulness by bonding the bandwidth of multiple T1 lines to make one larger service level. This is practical up to 10 or 12 Mbps, but gets too expensive and hard to find available bundles of unused copper pair above that. What’s needed is a different technology that gets more bandwidth out of the same copper.

That technology is now available and called Ethernet over Copper or EoC. Ethernet is a departure from T1 in the way the bits are organized on the line, but serves the same purpose. It uses exactly the same copper pair cabling with multiple pairs bonded to increase bandwidth. The differences are that EoC is available in increments from about 3 to 45 Mbps and it is distance limited. Near the central offices, high speeds are available. A few miles away there may be no EoC service at all. In between, there are different service levels possible.

There have been some major advances in transmission of data over copper pair wiring, with some installations supporting bandwidths as high as 100 or 200 Mbps. These are uncommon. Another copper technology, Cable broadband using coaxial copper cables and a modulation scheme called DOCSIS 3, can reliably deliver 100 Mbps or more bandwidth. Even 1 Gbps is not unheard of, although not that widely available. Another service called DS3 or T3 offers 45 Mbps over a pair of coaxial lines where available.

Fiber Optic Services for Unlimited Bandwidth
What really gets the job done at higher bandwidths is fiber optic cabling. Fiber bandwidth is nearly unlimited, especially when wavelengths are bonded to create very large services. Like, copper, fiber also has a legacy history and a newer technical approach.

Traditional fiber optic service is based on a telephony standard called SONET (Synchronous Optical NETwork). Familiar service levels are OC-3 at 155 Mbps, OC-12 at 622 Mbps and OC-48 at 2.4 Gbps. Higher levels include 10 Gbps and 40 Gbps.

Ethernet over Fiber (EoF) is a Carrier Ethernet service like EoC, but using fiber rather than copper transmission. Fiber Ethernet is highly cost competitive and readily available from 10 Mbps on up to 10 Gbps. Today’s most popular service levels are 100 Mbps Fast Ethernet and 1,000 Mbps Gigabit Ethernet (GigE). In some areas, 100 Gbps service is available to businesses.

Wavelengths Options
Fiber enjoys another advantage over copper in that it supports multiple 10 Gbps wavelengths through a process called WDM or Wavelength Division Multiplexing. This means you can run different protocols on completely separate wavelengths within the same fiber strand. This provides a high degree of flexibility for financial institutions and others with demanding applications.

As you can see, there are a wide variety of options on both copper and fiber transmissionall currently available. What works best for your organization is a function of application requirements, scale and budget. You’ll likely have multiple technologies and multiple vendors to choose from.

Telephone Trunks for Call Centers

By: John Shepler

All businesses need telephone lines of some sort. Independent professionals may rely on a smartphone for wireless communication, but businesses with offices or stores open to the public or with two or more employees almost always have some sort of landline installed. Let’s take a look at the analog and digital options available and the advantage of installing telephone trunk lines to increase capacity and reduce cost.


Plain Old Analog
Analog phone lines are the legacy technology of the phone companies going back over a century. You’ll hear them described as POTS or Plain Old Telephone Service. POTS lines are well established, highly reliable and engineered for high voice quality on both local and toll calls. Standard phones, including desk sets and cordless phones with multiple handsets, are analog phones and plug directly into analog business phone lines.

Broadband Phone
The digital solution for a single phone line is a broadband Internet connection shared with the computers. This option is usually chosen for its low cost, but voice quality can degrade and certain applications, like FAX machines and alarm systems, may not function correctly.

Adding More Lines
What about the vast majority of businesses with more than one phone line, especially those with an in-house contact center or specializing as a call center? Small operations sill rely on analog phone lines. You can add analog lines one at a time and plug them into your key telephone system or PBX switching system. Each outside line has its own phone number.

How Costs Add Up
Adding analog phone lines incrementally as you need them works well until you get more than half a dozen to a dozen separate lines. There are no technical issues, but costs mount up. Two lines cost twice as much as one line. Six lines cost six times as much. There is no economy of scale as these are independent lines.

How Trunking Saves
The strategy for reducing costs while maintaining voice quality and reliability is called trunking. Trunking simply means combining multiple lines to create a single trunk line with the same capacity. Trunking was invented by the telephone industry to transport dozens or even thousands of phone conversations efficiently from switching office to switching office. Originally, this was done with analog technology called carrier telephony. In recent decades, it’s all gone digital from office to office, leaving analog POTS lines only for that last mile connection between the telco office and the customer’s premises.

T1 Telephone Trunks
The first digital trunk line that was introduced by the phone industry for business users was the T1 telephone line. Yes, this is the same T1 technology that you may be using for point to point or dedicated Internet access. The difference is that the T1 line is divided or “channelized” into 24 separate segments or time slots. Each channel can transport one two-way telephone conversation and is the equivalent of an analog POTS line. You can use an appliance called a channel bank to convert between analog phone and the T1 line. Most in-house PBX phone systems have the necessary interface to do this or it can be added easily with a plug-in card.

Cost Advantage of T1
The big advantage of T1 trunks is that they become cost competitive with multiple POTS lines when you get over 6 to 10 outside lines. If you need more than a dozen phone lines for your desks or a call center operation, T1 is the lower cost option. Multiple T1 lines can be added to provide blocks of 24 outside lines incrementally.

ISDN PRI Improves on T1
A newer version of the T1 line is called ISDN PRI or Primary Rate interface. It uses the same T1 line but reserves one channel for signaling and switching. The other 23 channels are available as separate phone lines. ISDN PRI is popular with call centers because it provides faster call setup and teardown than the older T1 telephone lines. It also offers digital data ,such as Caller ID, that is not generally available on just T1 trunks. Like T1, though, multiple ISDN PRI trunks can be installed to provide as many outside lines as needed. Cost is competitive with T1 and most PBX systems come with the PRI interface already installed.

SIP Trunking, The Emerging Standard
While ISDN PRI is now the standard in commercial telephone trunking technology, an even newer technology is available to better support enterprise VoIP telephone systems. This is called SIP trunking. SIP is the switching protocol used by IP telephones and VoIP phone systems.

SIP vs T1
SIP trunks are also digital, but differ from T1 lines in that they are based on packet switching rather than time division channelization. Packet switching is the heart of all Ethernet networks that support computing. What companies are doing is replacing their old analog telephones with IP phones that connect to the same network as the computers. SIP trunks extend this connection out to the service provider for multiple telephone lines or a combination of voice and data.

Private Lines vs The Internet
Note that high performance SIP trunks are private lines between the user and the carrier and do not suffer from the vagaries of Internet broadband phone. SIP trunks often have the ability to also supply Internet service, but the telephone packets have priority to maintain high voice quality. SIP trunking is becoming popular for call center operations as companies replace their old PBX systems with newer IP PBX systems or choose to outsource the switching function to the cloud.

How to Choose
Which type of telephone trunking arrangement is optimum for your organization? Get some expert advice on the tradeoffs and competitive pricing from multiple carriers serving your location. Call now toll free (888) 848-8749 or enter your inquiry at Telexplainer.net

Choose Your Trunk, Choose Your Handoff

By: John Shepler

The telephone system isn’t what it used to be. Mostly that’s good. Technology has given us wireless mobile smartphones, enterprise VoIP, cloud hosted services and sophisticated call center operations. Many companies, though, can’t afford to shuck their considerable infrastructure investment in order to gain the advantages of the latest advancements. Is there any way to mash up the old and the new and have it work?

Indeed, there is. The magic is in something called a “handoff”. This is the interface between your telecom lines and your equipment. Let’s take a look at what type of handoffs are available to keep your phone system up to date.

In the beginning, “Ma Bell” offered one type of handoff. It’s the venerable analog POTS (Plain Old Telephone Service) line that is still popular today. Every phone was an analog phone and every line was an analog line. The handoff was in the form of a single twisted pair of copper wires. All the switching was handled by the public telephone system.

This type of connection still works well for businesses that need only a single telephone line. The phone plugs into a jack on the wall that connects to the telco POTS line. It’s the ultimate in simplicity. This arrangement supports both single wired handsets and the newer cordless phones. You can have multiple cordless handsets connected to a single POTS line.

A slightly more sophisticated business phone system allows multiple desk phones along with multiple outside lines. Each line is still an analog POTS line with its own phone number. It’s called a key telephone system because each phone has a button or “key” for each line. You can see the status of each line, typically 4 or 8, on the light for that line. You select the line you want by pushing the button for that line. You have to provide the switching intelligence for the system by answering the line that is ringing or selecting an unused line for calling out.

You can have as many analog phone lines as your key system will support. Since the lines are independent, there is no economy of scale with this arrangement. Two lines cost twice as much as one line, and so on. To gain a cost advantage, you need to move up to a trunk ing arrangement.

A trunk is a telecom line that supports multiple independent phone conversations. Originally, these were also analog using frequency division multiplexing. In the last 50 years, the old analog trunks have been replaced by digital trunks. T1 phone lines are a popular trunking system. Each T1 line supports up to 24 simultaneous phone calls carried on separate time multiplexed channels. The physical connection is two copper twisted pair. One is for transmit and the other is for receive.

Lets say you have a good size key telephone system with a dozen outside lines. You can provide those lines as individual POTS lines or with a single T1 line that carries all 12 phone lines with room to spare. The T1 line will likely cost less for a dozen lines. If you used all 24 channels, the cost savings would be even more dramatic. The issue you have, though, is how to connect a digital T1 line to your analog telephone system.

The answer is in a piece of interface equipment called a “channel bank.” This device converts between analog and digital signals so that both the phone system and the trunk line have the signal format and electrical characteristics they expect. As far as your phone system is concerned, the connection is exactly the same as if you had separate analog lines all the way to the phone company. This is called an analog handoff.

Another application for analog handoff is older in-house PBX (Private Branch Exchange) phone systems. A PBX is a key system with a brain. The PBX takes care of routing incoming calls and the bank of outside lines. When you dial “9” for an outside line, the PBX gives you the next available one. You don’t know or care which line it has selected. They all work the same.

Many PBX systems will accept one or more T1 lines directly. There is no need to go through the intermediate analog conversion using a channel bank. This is called a digital handoff. It may also be called a T1 CAS (Channel Associated Signaling) digital handoff or an ISDN PRI digital handoff.

ISDN PRI is a special type of T1 line that supports 23 simultaneous calls. What happened to the other channel? It’s used for signaling and switching to make the system faster and capable of slightly higher voice quality. Many PBX systems now have a connector for one or more PRI (Primary Rate Interface) trunks, as this is the most popular service for medium and larger phone systems.

Enterprise VoIP is the current technology being adopted en-masse by medium and larger companies. This replaces the analog or proprietary digital telephone wiring with network connections to the company LAN. The PBX is updated to an IP PBX that supports IP telephones. It also supports a packet switched phone line technology called SIP Trunking.

A SIP Trunk is digital, like T1 or PRI, but not separated into individual channels. Instead, the transmission protocol is Ethernet packets and a VoIP-centric switching format called SIP or Session Initiation Protocol.

An all-VoIP business telephone system would have IP phones and an IP PBX sharing the company LAN. A SIP Trunk connects the PBX to the telephone service provider. This is called a SIP handoff.

Another use of SIP Trunks is for cloud hosted VoIP services that provide the switching as well as connectivity to the public telephone network. With a cloud solution, you no longer have a PBX or IP PBX in-house.

Now, here’s where it gets interesting. You can often select your preferred phone trunk technology and specify the handoff you require. Just like T1 and PRI can be set up to provide analog handoff, SIP trunks can provide SIP, T1 digital, PRI digital, or analog handoffs. This means that your old phone system, with whatever interface it supports, can connect to modern networks and telephone trunking options. It often makes economic sense to continue using your current phone system until you can migrate to the latest technology.

Do you want to connect your current phones or phone system to the telephone service of your choice but aren’t sure how to make that connection? Find out what business telephone trunking options and pricing are available for your business location.

You Pay Too Much For Your Business Phone

While we’ve been busily gathering and servicing new customers, the telephone industry has been changing behind our backs. If you are still using the same phone and provider that you had a decade ago, it’s seriously time for a review. You not only could be, but probably are, paying way more than you would have to and be missing out on some newer productivity features.

What’s so different now? After all, a phone is a phone, right?

Ah, not so anymore. All phones used to be pretty much the same. That’s because they all came from the same supplier, the local telephone company. The phone was a big dumb peripheral to the large scale switching system at the central office. Most single line phones were built from passive components and got their power through the phone line. Multi line business phones were also built from passive components but supplied from a power supply and line card rack in the back room. That was necessary to create such features as flashing a line button when it was on hold.

Some of business phones you can buy today are not much more sophisticated that the one’s that Ma Bell supplied. One difference is that they may have a plug-in power supply or batteries to power the electronics inside. The one to four line key telephone systems that you can buy from office supply stores have replaced the old electromagnetic switching with smaller electronic boxes. Still, they all work on the same old telephone lines called POTS.

POTS stands for Plain Old Telephone Service. It consists of independent analog business lines that run from your office to the phone company over twisted pairs of copper wires. Power and switching signals are provided by the telco switching system. The in-house key system lets you have more than one line on a phone with LEDs to show what’s in use or on hold.

Did you know that you can get POTS service from companies other than your local phone company? The telephone industry has been deregulated so that other providers can lease the bare copper wires that run to your office and supply you with local and long distance service. There can be a cost savings in doing nothing more than switching providers. Your phone system will work exactly the same as it does now only you’ll get a lower monthly phone bill.

If your system has grown to more than a half dozen lines, especially if you have upgraded to an in-house PBX switching system, you could benefit from bringing in a digital trunk line instead of all those separate analog lines. A digital trunk called T1 CAS or ISDN PRI bundles up to 23 or 24 separate lines into a single line that still keeps the phone conversations independent. Why do this? You could realize a big cost savings from consolidating your lines. Chances are that your PBX system already has a T1 or PRI connection or you can upgrade with a adaptor card.

You may be wondering if VoIP telephony is for you. The consumer grade services that run on the Internet may not give you the call quality consistency that you need for good customer support or other business communications. What can work very well and save you considerable money is something called a SIP Trunk. This is a digital line that transports both telephone calls and broadband Internet access but keeps them completely separate so they don’t interfere. It’s a way to take advantage of VoIP technology without losing call quality or reliability.

The latest innovation is cloud based communications, also called Hosted VoIP or Hosted PBX. This is sort of like going back to just having phones in-house connected to the phone company’s switching center. The difference is that you aren’t stuck with the local phone company as your only choice. Using SIP Trunks, you can connect to many different providers, all competing for your business. Not only can you save money on your monthly bill, but you’ll avoid investing in expensive PBX or Key telephone systems and get advanced features like being able to include your smartphones in the system.

Does this whet your appetite to investigate what is available for your business telephone needs? Get prices and features for a variety of business phone service options so you can be fully informed before making any new commitments.

VoIP Compatible High Speed Internet

Voice over IP (VoIP) technology is attracting more and more business users all the time. There are big advantages over traditional Plain Old Telephone Service (POTS) in features and cost savings. The big issue is what to do with the outside phone lines.

Why is this even a question? It’s because the century old public telephone system has been based on analog transmissions over twisted pair copper wiring. Many smaller companies still have multiple analog business lines connected directly to their phones or to Key Telephone systems or in-house PBX systems. Others who are big enough to need at least a half-dozen outside lines have moved to digital transmission via ISDN PRI, also called T1 PRI.

So, if PRI is digital then what’s the issue with VoIP?

Well, there’s digital and there’s digital. PRI telephone trunks are actually digital replications of the old analog lines. Each PRI consists of 23 channels that each carry one digitized phone conversation. One other channel is used for switching and data, like Caller ID. Those 23 PRI “B” channels are strung together end to end for transmission. Each channel is 8 bits wide and sampled 8,000 times a second. At the far end, the channels are separated and converted back to analog phone signals.

Note that nowhere here is any mention of packets. You know that computer networks all communicate using standardized packets of information. Each packet has both address and data bits. This allows switches and routers to get them from wherever they originate to wherever they are intended.

TDM (Time Division Multiplexed) lines, such as PRI, use channels instead of packets. The switching function is provided by the central office switch. When a phone call is in process, there is a direct electrical connection between the two callers. That connection is set up at the beginning of the call and torn down when the call is over.

If you are thinking that PRI service isn’t really compatible with VoIP, you’d be partially right. It’s really a conversion process between your office phone system that might be VoIP and the Public Switched Telephone Network (PSTN) that is still analog and TDM based. What VoIP really needs is a telephone line that is compatible with packet switched technology.

The first obvious option is to use the Internet to connect you with your VoIP phone service provider. After all, the Internet is readily available, relatively inexpensive to access, and packet based. Remember that Internet Protocol (IP) is the basis of VoIP.

What gets missed is that there is a big difference in the technology that includes Internet Protocol and the actual performance of the public Internet itself. One issue is that the Internet is open to anyone to do pretty much anything they want on it. There is no traffic manager ensuring that each user gets adequate resources for their particular application. There is a pool of resources and it’s first packet come, first served. Your voice packets may be competing with users backing up their files to the cloud, accessing ecommerce websites or downloading HD videos. If there is enough low latency bandwidth for everyone, then no problem. If the pipes get clogged up like rush hour on the Interstate, then you get what you get.

That can be a big problem for sensitive packet streams such as VoIP calls. Network congestion can cause dropped packets that distort the voice, delay some packets so they arrive out of sequence and are discarded, or impose a noticeable delay that makes two-way conversations difficult.

You can improve your chances of getting decent VoIP voice quality by using dedicated instead of shared bandwidth for your connection. That means Ethernet over Copper or T1 lines instead of cable broadband or DSL. You can also impose QoS (Quality of Service) through your own router so that at least your VoIP conversations aren’t competing with computer file transfers in your own office.

A better idea, although a bit pricier, is to use a dedicated private line called a SIP trunk between your network and your service provider. QoS is maintained by the service provider from end to end. As long as you have enough bandwidth to support all the calls you want to make, everything should work beautifully all the time. SIP trunks can be set up to provide you with both telephone service and broadband Internet access. This is done by dividing up the trunk so that phone calls and Internet are kept completely separate.

Are you considering a change to your business phone system because you are dissatisfied with how it works or are looking to add features or reduce costs? Investigate enterprise VoIP and hosted PBX solutions with SIP Trunks as a better approach for your company.

Business Phone Goes Hosted

Business telephone service has expanded over the years, from the single line analog POTS (Plain Old Telephone Service) to multi-line PBX systems that handle hundreds and thousands of phone sets. What’s the next logical development? Could it be even larger and more sophisticated in-house PBX systems? No, just the opposite. The PBX is moving out as business phone service goes hosted.

Hosted business phone is another term for telephone switching in the cloud. Hosted means that a service provider hosts your telephone service on their equipment. The responsibility for running the PBX system and providing the lines to the public telephone system are effectively transferred from your company to your service provider’s.

Why would you want to go the hosted route? It generally boils down to finances and flexibility. The first financial advantage is that you no longer have to buy expensive capital equipment and provide a space for it in your building. This is seldom a one time allocation. Every so many years you find that your equipment has become obsolete and too expensive to maintain or it can no longer keep up with the demands placed on it. You need a newer and likely larger system to replace it. That process is called a “fork lift upgrade” because it you can’t often salvage any of the existing equipment. A fork lift truck drives in and hauls out the old PBX system. It then drives back in to deliver the new replacement.

Granted, smaller PBX systems that support branch offices or retail locations may be something you can pick up and carry yourself. Even so, the “fork lift” metaphor applies. It’s out with the old and in with the new. Hopefully you can pay off the old system before it’s time to replace it.

With a hosted PBX system, there are phones but there is no PBX or telephone switching system in-house. That lets you avoid a major capital expense and also the guessing game of trying to predict how much capacity you’ll need during the lifetime of that system. If you guess low, you’ll be replacing it while it still works just fine. If you guess high, you’ll pay for capacity that you never use. Either way, it’s hard to know the future well enough to pick just the right size PBX.

The other financial advantage is that PBX phone systems cost more than just the purchase price. Every time to you to do a “move, add or change” with your telephones, somebody has to do some rewiring and change some programming in the system. That could be a dedicated staff member who is the telephone manager full or part time. Otherwise it is a contractor known as a VAR for Value Added Reseller. Either way, there’s ongoing expense to run the system and keep up with the changes.

How do hosted business phone systems save you all that grief and expense? The service provider has a much larger shared PBX system and the staff to run it 24/7. They keep up with day to day maintenance and upgrades. Because this system is so large, it can accommodate many customers and easily expand to meet your changing needs. That’s the principle behind the cloud. You don’t have to worry about all the hardware, software and personnel needed to keep the phone system running. The service provider specializes in this and handles it for you.

What’s available in the way of hosted phone services? There are a number of cloud communications providers who offer this capability. They generally provide the service on a “per seat” per month basis. Each phone has internal, local and long distance switching capability included. Most of the time its a single price for all calling other than international and for all the features. Some providers can include your mobile phones so that they are part of the PBX capabilities. Some providers even include the physical phones. These are IP Telephones than plug right into your company LAN. You connect to the provider with a network connection called a SIP Trunk.

Can hosted business phone make sense for your company? There are solutions for every business from the smallest retailer to the largest corporation. Get prices and features for competing hosted PBX service providers now and see if you can save both money and effort.

The PBX Disappears With Hosted Voice

Medium and large companies are used to managing their own phone systems. It seems to go without saying that if you want to be able to make inter-office calls, you need to have a PBX or at least Key telephone system in-house. Hosted voice service says quite the opposite. With hosted voice, you only need to provide the phones. Sometimes even those are provided for you.

Hosted Voice, also known as Hosted VoIP or Hosted PBX, is a cloud service. The PBX phone system hasn’t magically disappeared. It’s simply been relocated from your building to the service provider’s.

If this sounds vaguely familiar, it’s because this is the model most companies used about half a century ago. What? You don’t recognize it? Back in the day, we all got our phones from Ma Bell and let her do the switching.

Centralized switching at the local phone company is what built the Bell system. That worked perfectly for residential users and small businesses. Larger companies wanted control of their calling and installed switchboards with operators. Later, when technology enabled it, they tore out the switchboards and installed automatic switching equipment. The phone company had an answer to the PBX. It’s called Centrex. They move the switching back to their “cloud” and handle internal as well as external calls.

There are a number of advantages to dumping the switched circuit model of Plain Old Telephone Service (POTS) and moving toward what is known as network voice. What’s changed over the last few decades is that every company now has a computer network. What they may not recognize is that the telephone system is also a network. It’s just a different and very specialized network. Why have two networks when you can combine them and maintain just one network?

It no longer makes sense to add modems to computers so they can run on the telephone network. Computer networks are so large and so fast that they have left voice lines in the dust. Instead, it makes more sense to modify telephones so that they can run on the computer networks. Telephones that have this capability are called IP phones or SIP phones. SIP is the switching system used by VoIP telephone systems.

The term VoIP or Voice over IP describes the nature of this system. You are transporting telephone calls, or voice, over IP Networks. Your LAN is an IP network. The IP stands for Internet Protocol, regardless of whether it is connected to the actual Internet or not.

This is how hosted voice works. Your PBX and analog telephones are hauled away for salvage or resale. In their place you get brand new IP phones that you unpack and plug into your network just like you would a computer or a printer. Then you pick up the phone to place a call and...

Oh, wait. You can’t make a call until you get a phone line to your network. That line is called a SIP Trunk. The SIP Trunk is what connects you to your service provider. At your end is a voice gateway installed by the service provider. At the far end is their very large telephone switching system, called a soft switch, and all the outside phone trunks that connect it to the public telephone system.

There’s a caveat here. Some smaller businesses try to cheap out and use the Internet to provide the connection to their phone service provider. That’s a pretty dicey arrangement because the Internet doesn’t offer any QoS or Quality of Service mechanisms. Your voice packets and the neighborhood kid’s pirated movie packets are all jammed together with no priority for anyone. If traffic backs up, it’s just like the tollway at rush hour. Everything creeps along and your phone conversations get choppy. They might even drop completely.

The best practice is to get your SIP Trunk from the same company that is providing your hosted voice service. They will give you a line that serves up telephone calls and the Internet without any interference between the two. As a single provider, they are responsible for both the line and the phone service. They’ll manage this arrangement to make sure both work optimally.

Regardless of the size of your business, it is well worth your while to investigate the features and cost savings from hosted voice solutions. Savings can be as high as 50% and you may be able to include your mobile phones as well as your office phones.

Call Center Contact Center Phone Service

Call centers and contact centers are major users of telephone services, especially long distance and toll free number services. What’s the best option for your call center to ensure that you have the right features and the best pricing? Well, there are several good technical options available right now. Let’s take a closer look at them to see what they can offer.

Traditional telephony has been based on basic business phone service, also called POTS or Plain Old Telephone Service. Old is right. Analog phone lines have been used for over 100 years and are still going strong. They’re highly reliable, deliver clear voice quality and don’t suffer from digital artifacts like latency.

Analog lines were originally intended to be one line per telephone. Key systems allow multiple lines on each phone so you can select which one to answer manually. All the but the smallest call centers have more lines and more agents than a key system can handle. That means using a PBX or Private Branch Exchange to automatically assign lines and direct incoming calls.

What PBX offers is automation. If you only need a half dozen or so outside lines, analog business lines still make economic sense. You connect them to your PBX using FXO (Foreign Exchange Office) ports on interface cards that plug into your PBX system.

When you need more than a half dozen or so outside lines, digital trunk service starts to make sense. Why? It’s because there is a cost advantage to bundling multiple phone lines into one trunk line. You may already have multiple analog lines coming in via a multi-pair binder cable. This is different. A T1 line uses two twisted copper pair to carry 23 or 24 separate phone lines digitally. Yes, those are the same copper pair that would otherwise be used for analog phone service.

The way this works is that the phone conversations are digitized at one end using an analog to digital converter and converted back to analog at the other end using a digital to analog converter. Each call is assigned its own digital timeslot or channel. They are kept separate so that there is no cross-talk between calls. T1 is a synchronous system that has strict timing at both ends of the line. Latency is almost non-existant. However, any unused channels are transmitted empty. All channels are constantly being exchanged between your PBX and your telephone service provider.

Why the choice between 23 and 24 phone conversations on a T1 line? All 24 channels can be used for telephone calls. This is called a T1 telephone line or T1 trunk. The other option is to use 23 channels for conversations and use one channel for switching, signaling and data, such as ANI and Caller ID. That option is called ISDN PRI or T1 PRI. PRI trunks are very popular with call centers because they offer the Caller ID information and faster switching times than normal T1 phone lines. Your PBX system may have multiple PRI ports so that you can have 23, 46, 69 or more outside lines for your call center.

SIP Trunking is an alternative to ISDN PRI. It is based on VoIP technology and uses packets rather than channels. SIP Trunks can be interfaced to older technology PBX systems and the newer IP PBX phone systems. There may be cost advantages for SIP Trunking, especially if using a lower bandwidth CODEC (Coder/Decoder) than the industry standard G.711. Some newer CODECs offer high call quality while transporting more simultaneous calls on the same line bandwidth.

SIP Trunking also opens the opportunity for cloud communications or Hosted PBX. With a hosted system, both the outside lines and the PBX switching system move to the cloud. You have only phones and a VoIP gateway in-house. The advantage to a cloud hosted solution is that you avoid heavy capital investment, pay for service by the agent seat per month, and don’t have to worry about maintenance or upgrades. The service provider takes care of all this for you.

Are you starting up a new call center or contact center, facing an upgrade cycle or expanding operations? If so, this is the perfect time to check business phone service options and prices for call centers and contact centers. You could gain performance advantages at lower prices now.

Voice over Internet Protocol Phone Services

Voice or Internet Protocol or VoIP appears destined to replace traditional wireline telephone services such as POTS (Plain Old Telephone Services) and even ISDN PRI digital trunks. What’s behind this shift in technology and what’s the key to maintaining voice quality with a new type of phone service.

The fundamental shift in technology can really be boiled down to a move toward computer networks and away from telephone networks. Also in the mix is the inclusion of wireless voice and data services that add another layer of complication.

Telephone networks started with Alexander Graham Bell and remained largely analog for most their century of dominance. Back when everyone had a telephone line and nobody knew what broadband meant, there was an effort to get the telephone system to do double duty as a means of voice communication and also computer communication via analog modems. This quickly hit its technical limit because the telephone network was designed for the human voice, which has a very low bandwidth requirement.

There was an effort to move to digital phone lines, called ISDN, but it was too little too late. Cable and DSL broadband offered much higher speeds at lower cost. Businesses ordered T1 and T3 lines, originally developed for digitizing phone lines and bundling them to save transmission costs between telco offices. These digital lines work just fine as point to point or dedicated Internet connections for data transmission. In fact, they’re still the most popular connectivity for small and medium businesses because of plunging prices and high reliability.

VoIP came out of the computer, not telephone, world. The IP stands for Internet Protocol, the most popular networking standard. Yes, it does say Internet protocol, but that doesn’t mean it is limited to the Internet. In fact, the Internet would have probably stayed an obscure academic network had it not been for the development of Ethernet as a way to connect computers and their peripherals.

The difference between telephone networks and computer networks is the difference between switched circuit networks and packet switched networks. Switched circuit networks, like the telephone network, actually switch connections to set up a private path for each phone call. This is bit like switching electrical circuits to power something as long as you need to use it. Packet switched networks are more like the US Mail. The network provides hard pathways to every destination. Each letter or packet gets where it is going by looking at the address for that individual packet and routing it accordingly.

VoIP is simply a way to send a set of packets in real time that are digitized pieces of a telephone conversation. Put them together end to end and the voice from the distant location is recreated. When it works well it sounds just like a telephone call, although you can also use a computer for two way conversations if it has a microphone and loudspeakers or earbuds.

Just like computers have struggled to press the century old telephone system into service for carrying data packets, computer networks have struggled with carrying sensitive voice packets on a system designed to reliably transfer data files even if parts had to be resent due to network errors. When VoIP goes bad, it sounds garbled and clips each side of the conversation. That’s a symptom of a network that isn’t optimized for real time voice packets that have to get through without error, jitter and time delay (latency).

The Internet is hit and miss when it comes to carrying VoIP telephony. If you have sufficient bandwidth and little congestion, you can experience a decent quality call. That’s especially true if cell phone call quality is what you are comparing to. If the Internet is having problems or getting congested, you may come to miss your old faithful landline.

Businesses that require optimal voice quality don’t use the Internet as their phone connection. Instead, they use private lines or MPLS networks that are engineered to support packet voice signals. You may hear this referred to as enterprise voice or enterprise VoIP, even though there is no Internet involved with the Internet protocol in this case.

Are you considering a move to VoIP with your next business telephone system upgrade? If so, be sure to understand the costs and tradeoffs with Internet vs non-Internet implementations. You can get that help along with pricing and availability for Enterprise VoIP telephony at no cost or obligation for serious business applications.

Where Hosted PBX Solutions Save

Business telephone systems range from the very simple with a few phones and a few lines to complex private branch exchanges that support multiple sites. The new approach is a hosted PBX that makes things simple again. But do hosted PBX solutions really save anything and can they maintain voice quality?

With the simplest arrangement of a single landline phone connected to the local phone company, there really isn’t much to manage. You pay so much per month for “dial tone” that makes your phone work and gives you typically unlimited local calling. You have the option to switch to a different provider for long distance service or use a dial-around service for international calling. These are options to save you on the per minute calling rates.

The basic analog or POTS (Plain Old Telephone Service) phone service seems simple because all the complexity is at the other end of the wire. What you don’t see or have to deal with is the intricacies of connecting your line to any of billions worldwide or to even more billions of wireless callers. If you have, say, 3 business locations with 1 phone each, they talk to each other by dialing up the desired location just like any other phone number.

Businesses found out just how complex the PSTN (Public Switched Telephone Network) was when they got big enough to have lots of desk phones and a dozen or more outside lines. What many companies did was to buy their own telephone switching system called a PBX (Private Branch Exchange.) The advantage of having your own PBX system is that calls within the company stay on your own wiring and you don’t have to pay the telephone company to connect them. That includes more complex PBX arrangements with digital tie lines that connect multiple locations in a private network. Once again, the motivation is to keep as many calls as possible off the public network to avoid “toll” charges.

Many companies have rued the day the got into the telephone business. PBX systems are expensive to buy and need constant updates as employees move within the company. There is also maintenance activity for both the PBX and its telephone network wiring.

Hosted PBX is a fairly new service that offers to offload the expense of in-house phone systems. It only became possible when most companies installed Local Area Networks for their computers and the price of private digital lines became affordable. The enabling technology is VoIP or Voice over Internet Protocol. In this case, Internet refers to the technology standard and not necessarily use of the public Internet.

Hosted PBX refers to using a large PBX telephone system that is located or hosted by a third-party service provider. This PBX is big enough to handle the telephone traffic of many different companies to gain an economy of scale. In a way, this is similar to going back to the days where each phone was individually connected to a local telephone company that took care of call switching.

So, where does the cost savings come from? Network consolidation is one area. Both telephones and computers run on a single converged voice and data network. There are no separate telephone wires. This network is extended to the hosted PBX provider using a private digital line called a SIP trunk. You are not tied to a particular service provider. There are many competing hosted PBX solutions and that competition is another way that cost savings can be offered.

The private SIP trunk helps to maintain high voice quality because it provides the characteristics of low latency, jitter, packet loss and congestion, along with quality of service mechanisms that keep data packets from interfering with voice packets. You can also buy Internet based hosted PBX services at lower costs, but the vagaries of the public Internet can introduce distortion and clipping in the conversations.

Do hosted PBX solutions offer a real cost savings for your company? It depends on how many seats you have, what features you want and what your existing system is costing you. If you are close to replacing an aging PBX or one that has run out of capacity, the economics highly favor hosted solutions. To decide for yourself, get competitive pricing on hosted PBX solutions for business. It may come down to whether you want to pay as you go versus investing in your own in-house phone system.

Types of Business Telephone Lines

Business telephone lines, once available in only a single analog version, have proliferated over the years. You can still get the legacy analog subscriber loop. You can also get a variety of digital lines and trunks that may offer cost and performance advantages.

The basic business telephone line is little changed from its invention over a century ago. It consists of a single small gauge twisted pair copper wires that carry all the necessary signals. This is an analog telephone line. Analog phone service is also known as POTS for Plain Old Telephone Service. Many businesses have multi-line phones, but all they do is connect to multiple POTS lines. One to four lines is typical of a small office phone system. If there are lighted pushbuttons for each outside line, this may be called a “key” telephone system.

POTS telephone lines generally include local and long distance calling, features such as Caller ID, 3 way calling, and perhaps a toll free number. One POTS line may be connected full time to an office FAX machine. Some companies that have digital telephone systems may still keep a POTS line for the FAX machine, as not all digital services support FAX.

The simplest digital phone line is a single VoIP or broadband phone service that uses the Internet as a substitute for the twisted pair analog phone line. The cost savings realized is due to the fact that most businesses need broadband Internet access as well as telephone service. Using the Internet to connect the phone to the service provider avoids the charges for a separate telephone line.

The main limitation to broadband phone service is that the Internet was never designed to support high quality two-way real time voice or video services. It is critical to have enough bandwidth to support all the voice and data traffic on the broadband connection and to give voice packets priority. When bandwidth becomes restricted, voice quality starts to get garbled and the call may even be dropped. Another factor is latency or time delay between source and destination. The longer the latency, the more the phone starts to act like a two-way radio where only one person can talk at a time. Latency is seldom, if ever, a factor on analog lines or carefully engineered private networks.

Enterprise VoIP systems, consisting of many telephone sets connected to a converged voice and data LAN, avoid the limitations of the Internet by using dedicated circuits transport calls between internal phones and to the connection point or termination with the Public Switched Telephone Network. That termination may be within the company, where the connection is to multiple POTS lines or a digital trunk line. It may also be at a service provider connected to the enterprise by a converged voice and data line called a SIP Trunk.

A “trunk” line is simply a bundling of multiple telephone lines in one cable. That may be a fat cable with many analog copper pair or it can be a digital trunk line with few wires that transport many telephone calls in channels or packet streams.

The most popular digital trunk line is called ISDN PRI. This is also called T1 PRI because it is carried on a T1 digital line. What a PRI digital trunk gives you are up to 23 outside telephone lines plus a dedicated channel for switching signals and data such as Caller ID. Some PBX telephone systems have provisions to connect to two or more PRI trunks. This is especially true for call centers and large corporate office buildings. Note that each of the business lines in the ISDN PRI trunk can be configured as local, long distance, inbound only, outbound only, toll free or some combination of these per customer requirements.

The newest business telephone trunk is called SIP Trunking. SIP is the control and signaling protocol for VoIP telephone systems. One SIP trunk can carry dozens of phone calls, even more than a PRI trunk. The other way SIP trunks can be configured is for both voice and data on the same line. This is especially valuable for companies that have converged networks shared by both computers and telephones. The SIP services provider brings in both broadband Internet access plus business telephone lines on the same SIP trunk.

What type of service will work best for your company? There may be a range of options to choose from. Get prices and availability for business telephone service now, so you have up to date information to make an informed purchasing decision.