Showing posts with label computer networks. Show all posts
Showing posts with label computer networks. Show all posts

Thursday, August 21, 2014

Connectivity Should Be Invisible

By: John Shepler

Buffering videos, garbled VoIP phone calls, slow loading web pages, interminable waits for files to download, jerky video conferencing, hesitation in response from the cloud. They’re all symptoms of connectivity that makes us painfully aware of its presence.

Get the MAN and WAN network performance you need.That’s not what you want. You want connectivity to be invisible, like other utilities. Flip a switch and the lights come on. Turn the faucet handle and out comes the water. Unless something goes horribly wrong, this is how it works every time. So, why do we have lower expectations of our bandwidth connections?

Not So Great Expectations
Perhaps its because so many of us who are in a position to do something about it were around to watch the blossoming of the Internet from a backwater mail service for academics to the primary way we do business and communicate. Perhaps it’s because the technology is still evolving. This is especially true in mobile applications and remote locations, where bandwidth is still a precious commodity and limited in both speed and availability.

Otherwise, it is quite possible to achieve that goal of making network operations a background activity for business users. You can then treat your connected devices as appliances. You turn then on and every function works the same way, all the time. Nothing happens to break your stream of consciousness or give the impression that something is “broken.”

What to Know
You need to be aware of the some key performance characteristics of your network. No, not your LAN. I assume that you’ve already optimized your in-house network. The real Achilles heel is those outside connection, the MAN and the WAN.

The first parameter of importance is bandwidth. The idea behind having “big pipes” is that the conduits are always larger than the quantity of bits per second that you are sending through them. When the circuits can’t handle the volume of traffic, they become congested. It’s like too many cars trying to enter a superhighway. At some point it all clogs up and things slow to a crawl.

Networks, including the Internet, are good at preserving the integrity of the traffic but not so good at keeping the flow moving at top speed when congested. Buffers fill up as each node waits its turn. At some point, packets can no longer be accepted until those in process move on. Does this sound like a busy airport during a snowstorm? The analogy is close.

How Much BW is Enough?
What this all means is that you need to order the level of bandwidth consistent with your current and near-term needs. “Of course,” you say. “That’s obvious.”

Well, it is an it isn’t. There are a numerous ways you can get caught without the bandwidth you need. One is application demand that is creeping up. Those T1 lines you ordered a decade ago have been working reliably until recently. The carrier says they still are. What’s happened is that you’ve added employees, moved applications to the cloud and depend on the Internet for more of your communications. The lines are still working fine. They’re just overloaded. You need more bandwidth.

So, you go out and order a high speed satellite link that has 10x your old bandwidth. File transfers seem to be working fine, but you can’t carry on a telephone conversation because you have to pause for a second between talking and listening. Your cloud business applications also seem to run a lot slower than they did when you ran your own data center. How much bandwidth does it take to fix this situation?

The Latency Speed Bump
No amount will be enough. That’s because your problem is latency, not bandwidth. Latency is a time delay between source and destination. In-house the speed of electrons through wires and photons through fiber is so fast that you’ll be hard pressed to detect it. But, when those locations are connected by a radio wave path that goes up over 22,000 miles to a satellite and back down 22,000+ miles, the delay is noticeable, if not downright annoying. A round trip takes something like half a second… even at the speed of light.

Network congestion can contribute to latency, but an uncontested network can still have latency issues depending on path length and any buffering delays introduced by equipment in the path.

Other Sources of Network Congestion
Congestion can also be caused by contention between your needs and those of other companies sharing the MAN or WAN network. You may have installed more than enough bandwidth for your needs, but the network doesn’t have enough for yours plus everyone else’s. This is a classic issue with the Internet and mobile cell towers. Too many users at once can overwhelm the system and force everyone to take turns using the limited resources.

What can you do about that? First, keep your in-house communications on dedicated private lines or through an MPLS network that guarantees performance. Choose symmetric services with the same bandwidth in the upload and download directions unless your are sure your needs are asymmetrical.

For Internet connections, which we all need, you can bypass most of the “information slow lane” problems with a dedicated Internet connection. This gives you the best performance in terms of bandwidth, latency, jitter and packet loss. The actual core of the Internet is really pretty good. It’s the last mile connections, especially those shared with other users on “best effort” services like DSL, Cable and cellular, that get easily overloaded.

How to Choose
Ultimately, it’s a cost vs performance tradeoff. Cable broadband works great for residential and home office users and can work just fine for businesses that don’t have critical requirements. Most medium and larger businesses, however, need to move up to private lines and dedicated Internet connections if they want their connectivity to become invisible to users.

Do you wish your connectivity was more invisible that it is now? Look into high performance MAN and WAN bandwidth options that are available for your business location.

Click to check pricing and features or get support from a Telarus product specialist.



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Thursday, March 15, 2012

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.

discovder the features and cost savings offered by hosted voice solutions...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.

Click to check pricing and features or get support from a Telarus product specialist.




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Tuesday, February 14, 2012

AboveNet Offers Gigabit Ethernet For Enterprises

Gigabit Ethernet (GigE) has pretty much taken over the LAN in large and even medium size enterprises. But what about the WAN? Are you still hobbled by the slowdown that occurs when you are sending files beyond your network edge? Isn’t it time to consider Gigabit Ethernet for the WAN as well as the LAN?

In the battle of bandwidth services, Gigabit Ethernet is taking the lead...Running a Gigabit LAN and using something like DS3 bandwidth or even OC3 fiber optic service for your MAN or WAN service is like connecting a drinking straw to a fire hose. The flow can’t help but slow to a trickle when it goes through that edge router. There once were good reasons why very modest WAN connection speeds were just fine. Today, there’s much less of a case to be made for order of magnitude or larger differences in LAN and WAN speeds.

What’s happened to demand higher connection speeds today? Computer networks were once strictly internal to a company. In fact, anything connected to the network from the outside aroused suspicion. If you wanted to transfer data somewhere, you used a reel of tape or a cassette. Slowly, data communication networks arose starting with dial-up modems and Frame Relay networks. Then came the Internet. It been a speed race ever since.

Now nearly every company has a dedicated broadband connection to the Internet and perhaps one or more VPNs (Virtual Private Networks) to connect with employees working for home or on the go. Companies with more than one site often have private line or MPLS network connections to tie everyone together. With the amount of data flying around, tapes and removable disk packs are yesterday’s means of data transfer. Today it is high speed network links.

Not only has computer technology changed, but so have business practices. Now nearly everything has some form of automation involved. Business productivity is leveraged upon real-time computer systems and electronic storage. Nobody at headquarters wants you to create a report and send it overnight mail anymore. They want a video conference presentation featuring you delivering the report live. Oh, and they want it right after lunch.

Beyond mere connectivity for transmitting files electronically instead of faxing or mailing paper, companies and their computing systems are becoming estranged. The data center used to be right down the hall or in the basement. Now it’s on the other side of the country and is owned by somebody else. More and more companies are buying their computing and even their telephone service through a cloud service provider. The LAN no longer connects you to the server racks. Now you have to go through a WAN connection. Does it make sense that the bandwidth that used to be good enough for a few overnight file transfers can’t begin to support real time business applications running in the cloud?

The idea of Gigabit Ethernet connections used to be a fantasy. Now it’s becoming a given. You need the high bandwidth connections to support the amount of data moving between organizational locations and back and forth with the cloud. If you are supporting financial trading, high performance SaaS, video conferencing or enterprise VoIP, you need not just high bandwidth but also low latency and jitter with minimal packet loss. In some cases, you may also require links to overseas locations with the same network characteristics.

Where do you go to get Gigabit level connectivity? AboveNet is a premier supplier of domestic and international fiber optic services. They are recommending moving to Ethernet rather than the legacy SONET fiber services. Why? SONET/SDH services are a legacy telephone company technology. They were designed to support trunking massive numbers of telephone conversations from office to office. These protocols can be made to work with computer networks but they are not directly compatible.

What is? Ethernet! The Ethernet that runs on your LAN can now traverse your WAN to the Internet or to another LAN on the other side of the country or across the Atlantic. This makes for a simpler and more efficient overall network setup. It also enables services such as layer 2 Ethernet LAN Service that bridges two distant LANs as if they were in the same building. Ethernet scales much faster and more granularly than SONET, allowing you to buy just the bandwidth you need now with the option to quickly scale up when the need arises. Best of all, Ethernet has a cost advantage over SONET/SDH. You get more bandwidth for the same money or pay less for the same service level.

If you are feeling the pinch from too small WAN connections, this would be an excellent time to check your current options for Ethernet, Fast Ethernet and Gigabit Ethernet services from AboveNet and other fiber optic carriers. You can get instant pricing for bandwidths up to 1 Gbps and rapid quotes with helpful consultation for all other services you may be interested in for your company.

Click to check pricing and features or get support from a Telarus product specialist.




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Tuesday, March 10, 2009

Goose Your Technical Service Business

Have you noticed that business has been slowing down lately? Perhaps you have as many inquiries as ever, but customers are hesitant to commit. It's probably nothing that you're doing wrong or differently. It's likely just the current state of the economy. Even so, is there any way you can goose your business to maintain or even raise your income? Sure there is.

These comments may apply to many different types of businesses, but the specifics are related directly to business telephone or computer networking technical service businesses. If that describes you, then you're in luck. Here are a couple of ideas that could give your business that extra boost when you most need it.

The idea is an opportunity that comes free of charge. It's membership in the VAR Network. VAR is Value Added Reseller and most often applies to companies that are authorized resellers of equipment such as routers, switches, IP PBX systems, handsets, security appliance, WAN optimizers, and the like. But it can also apply to technical consultants who help companies design their networks, select system components or install and maintain phone systems or networks.

What the VAR Network offers you is a registry of your business with details on the particular products and services you support and the footprint where you operate. There's no charge to be included in this online registry. Once your details are entered into the database and approved, you'll be qualified to receive inquiries from companies actively seeking your products and services. Think of it as a match making service between sellers and potential buyers of business technology. Whatever warm leads that come your way will probably be in addition to the business you currently have. That sounds like a net increase, doesn't it?

Another advantage of membership in the VAR Network is that you gain access to an organization with vast resources to provide competitive line services such as T1 voice and data, DS3, Ethernet, SONET fiber optic and even wireless point of sale. Chances are that you are not currently as well connected and maybe don't even deal in the specialized field of telecom line services. But with a couple dozen providers and experienced consultants at your beck and call, you can easily offer your clients the line services they need in addition to the physical hardware. For them it's one stop shopping. For you, it's extra monthly income.

The other idea isn't free, but it's pretty low cost. It's an add-on to your current business phone system that adds valuable features and opportunities to promote your business. For a few dollars a month, you obtain a toll free number that forwards to any or all of the phones you are now using. It includes such niceties as FAX on demand and an informational mailbox. You pitch your services and potential customers can impulsively connect you to in an instant no matter where you happen to be. Learn more about this by reading "Sales Lead Generation in a Recession" to see what it can do for you.



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Tuesday, October 14, 2008

Scrambling For Business Leads

You can't help but notice that business activity is thinning out. Fewer inquiries are coming in and fewer order commitments are being placed. What's really scary is the "Out of Business" signs that seem to be popping up in more and more store fronts. So, what do you do to hang on?

The platitudes such as "business goes in cycles" or "this too shall pass" aren't much help when you're staring at red ink on the income statement. Truly, the frozen credit markets will thaw and eventually we'll exit what's likely to be a prolonged recession. But you need a way to keep people working and cash flowing until that "rising tide lifts all ships."

There may not be any of the proverbial magic bullets around, but there certainly are things you can do rather than just wait and hope. Belt tightening is always a good thing to consider. Chances are that there are expenses that have found their way onto the books and you're not even sure why you're spending that money anymore. But you should also look at doing things to increase income as well as reduce expenses.

Here's an idea if you happen to be in a technology related sales and service business, particularly one involved with computers and networking or business telephone systems. Join a collaborative network of like-minded technology professionals to increase your sales opportunities with current customers and get warm leads for potential new customers.

This organization is called the VAR Network, VAR meaning Value Added Reseller. If you're in this line of work, you'll recognize the acronym. The VAR Network gives you a double-headed approach for increasing your business receipts. First, you have the opportunity to include telecom line services in your stable of offerings. You may feel that specializing in network routers or IP PBX systems is really as deep as you want to get into systems work. But you're leaving a lot of money on the table for someone else to scoop up. Why not grab that share of the client's budget for yourself?

I know. You don't know squat about line services and are concerned about the learning curve involved to be able to productively sell things like dedicated T1 Internet, ISDN PRI, and Metro Ethernet. Fear not. You'll be partnering with an expert at the VAR Network who knows the ins and outs of all of those services. This consultant has the tools and carrier relationships to efficiently identify the best cost offers and close the deal, including the paperwork.

What do you get out of it? In exchange for providing the line services lead to the VAR Network, you'll be rewarded with a monthly commission based on your customer's usage. That can range up to hundreds or thousands of dollars a month per client for larger enterprises. Lots of smaller customers can also result in big incomes. But you already know that.

The other side of this double-whammy is that the VAR Network will send leads to you. That's right. The VAR Network sells line services through the Telarus Master Agency, but doesn't sell or install equipment. Many clients looking for line services also are seeking upgrades to their business telephone networks or local area networks and computers. Those leads are passed on to member VARs based on location, service specialization and support of the network.

Now the best part of the deal. You pay nothing to join or maintain your membership in the VAR Network. You just need to have an established business in the right field. Telecom line service consulting and support are absolutely free. You'll share in the income generated from the leads you supply. You'll also get leads for free as they become available. If, and only if, a lead supplied by the VAR Network results in a sale are you expected to remit a small percentage of your receipts from that lead to support the network.

Does this sound like an easy and painless way to give your business an edge in this declining business environment? It doesn't come easier or more pain free. Find out for yourself. Check out the VAR Network and Sign up to become a VAR Network partner now.



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