How Your Internet Connectivity Works

How much do you know about the technical inner workings of the Internet? We tend to think of it as a very, very large cloud… and it is. Let’s take a peek inside, courtesy of this fascinating Internet Infographic from Telex:

What Connectivity Do You Need?
To take full advantage of what the Internet can actually do, you need a solid connection from your business location to the backbone of the Internet. This is what a Tier 1 service provider can give you. You can’t afford to make that direct connection, but a large carrier can. What you order is called “dedicated Internet access”. That’s bandwidth that is assigned to your operation and no one else. With DIA, you’ll get the most consistent bandwidth along with the lowest latency, jitter and packet loss available. It the next best thing to a private network or a direct point to point line service.

Fiber Optic Leased Lines for Business

Copper-based leased lines have been the go-to solution for connecting business sites and for dedicated access to the Internet. However, copper’s days are numbered as big data, HD video and a migration out of the corporate data centers and into the cloud accelerate. The era of fiber-everything is approaching. Fortunately, prices are lower and options greater than ever before.

Fiber optic leased lines have been employed for decades by major corporations and businesses, like video production and distribution, that can’t function without the bandwidth fiber affords. Nearly all of this bandwidth has been supplied by a telephone industry standard called SONET for Synchronous Optical NETworking.

SONET picks up where T-carrier stops. T1 is good for 1.5 Mbps and up to 12 Mbps when multiple T1 lines are bonded. T3, often called DS3, is a 45 Mbps service, although it can be rate limited to 10 or 20 Mbps to lower costs. DS3 stands at the crossroads between copper and fiber. DS3 bandwidth is most often carried on a multiplexed SONET service for most of the transport distance and then converted to coaxial copper connections at the customer site.

SONET fiber optic lines start with OC-3 at 155 Mbps. Like DS3, OC-3 can be rate limited to offer fractional OC-3 bandwidth at 50 or 100 Mbps. Most often it is leased as a full rate OC-3 service.

Other SONET service levels offer increasing bandwidth. OC-12 runs at 622 Mbps. OC-24 is a Gigabit service running at 1.2 Gbps. It is not widely offered. The next popular SONET service is OC-48 at 2.5 Gbps. OC-192 steps this up to 10 Gbps. OC-768 is a 40 Gbps line service that has been popular as a carrier backbone but now offered to businesses in some areas.

Note the big gaps in bandwidth between the SONET optical carrier levels. If you need a Gigabit connection, you may have to order an OC-48 service even though it has twice the bandwidth you require. We’ll take a look at how Carrier Ethernet is far more scalable and can give you fine degree of granularity for selecting just the right bandwidth for your applications.

Another thing about SONET is that it is a TDM or Time Division Multiplexed technology. This means that the signal is a string of bits divided into small channels and carefully synchronized to communicate with other SONET lines. Why this arrangement? It is the telephony legacy of SONET. It was designed to be compatible with Bell’s T-Carrier standards that are also TDM-based. Each channel in a T1 line or OC-768 is 64 Kbps to support one telephone call. Of course, these channels can now be combined so that you can use the entire line capacity less overhead to transport your data packets.

Since SONET is not a packet switched protocol, you need a protocol converter to translate between TDM and Ethernet in order to get your network data from place to place. That is generally a plug-in module for your router. Each SONET level has a specifically designed module that is unique to that optical carrier level.

What SONET has going for it is a long history and extensive deployment worldwide. You don’t have to worry about the intricacies of protocol conversion or signal interfacing, as they problems were solved long ago. SONET is most popular when deployed in rings of two redundant fibers that can switch in under 50 Msec to keep the data flowing even when faults in the system occur. Most metropolitan and long haul fiber optic networks are set up in the SONET ring topology for reliability.

What now competes with SONET is Ethernet over Fiber (EoF). Yes, this is the familiar Ethernet protocol that runs on your LAN but extended for long haul transport. The extended protocol is called Carrier Ethernet.

The advantages of Carrier Ethernet include easy and rapid scalability, a packet oriented protocol directly compatible with nearly all company networks and edge routers, and a considerable cost savings compared with SONET. Typical service levels start at 10 Mbps, the standard Ethernet service level. Other popular options are 100 Mbps Fast Ethernet, 1000 Mbps Gigabit Ethernet (GigE) and 10,000 Mbps or 10 Gigabit Ethernet (10 GigE).

You aren’t limited to these particular service levels. You can pretty much pick any bandwidth you like as long as the Ethernet Port installed at your facility can support the maximum speed you require. Easy scalability also means that you can often simply call your service provider and request an increase in bandwidth. It’s likely to be available in a matter of days if not hours.

Ethernet over FIber was almost unknown even a few years ago but now widely deployed. If available at your location, you’ll find that the cost per Mbps is much lower than SONET, perhaps half the cost for the same bandwidth. This is why Carrier Ethernet is rapidly taking over the fiber optic transport market, although SONET prices have also been plunging in response to the new competition.

Does your company require higher bandwidths that you can get from copper wireline services? Are you using fiber now but wondering if you can get a better price? Do you have a new application and want to get the best deal on bandwidth? If any of these apply, get competitive quotes on SONET and Ethernet fiber optic leased lines available for your business location.

Business Fiber Optic Connections Nearby

Are you running out of bandwidth on your telecom connections? You’ve gone as far as you can with bonded T1 lines. Now you’re considering making the move up to fiber optic services. You’ve heard that those are really expensive and that you can get hit with construction costs on top of the monthly lease price. Is that really true? Is there such as thing as cost effective fiber optic connections?

A lot of what everybody knows about fiber optics is long out of date and may be preventing them from making a smooth and painless transition to unlimited bandwidth options. For one thing, there are options available right now that weren’t around even a few years ago. Pricing has also come down considerably due to competition and new technology. Let’s take a closer look at the fiber optic connections that are located nearby.

Before we start looking down fiber strands for a solution, have you considered the latest in copper technology? Copper is way more than T1 or DSL these days. Ethernet over Copper technology gives you up to 45 Mbps in many business locations. That’s as much as many businesses really need. It’s relatively inexpensive, highly reliable and is provisioned over multiple twisted pairs. Those pairs, by the way, are probably already installed in your building for multi-line telephone service.

Another copper service is cable business broadband. It’s not for everyone, but if you can benefit from shared bandwidth up to 100 Mbps download and 10 Mbps upload for Internet access, the price is right. It’s about the same as a T1 line.

Entry level fiber optic service actually starts with DS3 at 45 Mbps. Nobody thinks about DS3 being a fiber service. It’s delivered over two coaxial cables and often referred to as a T3 line. However, that copper cable only goes as far as the street at most. The rest of the path is over a multiplexed SONET fiber optic service.

It is OC-3 SONET fiber optic service that is fiber all the way. OC-3 was the first fiber optic service available to most businesses. It offers bi-directional 155 Mbps dedicated bandwidth for point to point or dedicated Internet access connections. OC-3 is part of the SONET (Synchronous Optical NETwork) family of traditional telecom services. Next up the line is OC-12 at 622 Mbps, OC-24 at 1.2 Gbps, OC-48 at 2.4 Gbps, OC-192 at 10 Gbps and OC-768 at 40 Gbps.

Competing directly with SONET is now Ethernet over Fiber (EoF). Ethernet over Fiber is a Carrier Ethernet service that is easily scalable so you can increase bandwidth incrementally. That means more intermediate bandwidth steps than SONET and fewer equipment changes. The provider installs an Ethernet port that delivers your service. This is almost always selected at 100 Mbps, 1 Gbps or 10 Gbps. You can get any speed service you want up to the capacity of the installed port. Many carriers are now routinely installing 1 Gbps ports so that start off as low as 10 Mbps and work your way up to 1 Gbps with only a phone call.

How about pricing and availability? It varies greatly, although you should know that there is a big competitive buildout underway nationwide. It’s not just the traditional telecom companies. There are new players with their own fiber networks that run IP at the core. They don’t have a legacy SONET infrastructure to maintain, so they’ll run Ethernet over Fiber right to your door.

The big trick is to have your building “lit” by one or more carriers for fiber optic service. In multiple tenant business buildings there is enough opportunity to attract carriers to install service at little or no cost. If you are the only user, the bar is higher. Some providers are so aggressive that they’ll waive construction costs if you buy a reasonable amount of bandwidth and they don’t have to run the drop too far. Others will ask you to kick in at least a small portion of the construction expenses.

Monthly lease prices have plunged over the last decade for both SONET and the newer Ethernet services. Competition from peers and Ethernet vs SONET has driven fiber optic bandwidth costs down to a fraction of what they were during all the hoopla of the tech boom years before 2000. If you haven’t gone out for quotes in, say the last few months, your jaw will likely drop when you see how much you can get for your bandwidth dollar these days.

What’s the best way to get a reasonable suite of competitive quotes? Use a bandwidth broker, like Telarus, to get multiple fiber optic service quotes for your location. Their automated GeoQuote (tm) system is so fast that you can get quotes up to 1 Gbps instantly online with no cost or obligation. If you like what you see, an expert consultant will help you sort through the options at your convenience. Go ahead and give it a try now.



Note: Photo of fiber optic conduit spools courtesy of Wikimedia Commons.

Fiber Buildings Offer High Bandwidth

Are you looking to increase your bandwidth connections from the low to medium speeds you can get delivered over twisted pair copper or fixed wireless, on up to the high speeds available only over fiber optic cabling? Would you like to do that while avoiding the often prohibitive construction cost of bringing in new fiber service? Then what you need is a fiber building.

In this case, a fiber building isn’t one that’s made out of carbon fiber construction or anything exotic like that. Fiber doesn’t refer to the construction materials of the structure itself. It refers to the type of telecom services already installed. A fiber building is one that already has fiber optic service brought in and operating. That’s why you often hear them referred to as fiber lit buildings. Lit means that there is laser light shining down those fiber strands and carrying digital payloads.

So, how do you find a fiber building? Peeking in windows after dark won’t work and will probably get you in trouble. You could start calling all the office and industrial buildings in the area and mark the lit building locations on a map. Or you can take the easy approach and use an automated online tool that will do all that legwork for you. It’s called the “Lit Building Locator.” You simply enter the street address of the building you are in now and you’ll get a map of lit buildings in the area and how far they are from you.

The most popular fiber optic bandwidth service being requested now is Metro or Carrier Ethernet. The beauty of Ethernet is that it is the same protocol that you are already running on your corporate LAN. That makes interfacing very easy. Fiber optic Ethernet services include Fast Ethernet at 100 Mbps, Gigabit Ethernet (GigE) at 1,000 Mbps and 10 Gigabit Ethernet (GigE) at 10,000 Mbps. In some cases 40 Gigabit Ethernet is also available for the most demanding applications.

You should be aware that there is another type of fiber optic service that is also installed in “lit” buildings. This is the traditional telecom service called SONET for Synchronous Optical NETwork. Bandwidth services include OC-3 at 155 Mbps, OC-12 at 622 Mbps, OC-24 at 1.2 Gbps and OC-48 at 2.4 Mbps. Higher speeds include OC-192 at 9.95 Mbps that is compatible with 10 GigE WAN-PHY and OC-768 running at 40 Gbps.

Which fiber service should you choose? There may or may not be a choice. Once a fiber service is brought into a building, competing services generally choose other buildings to light up. Any particular building may be lit for SONET or Ethernet. There is a service called Ethernet over SONET, including 10 GigE WAN-PHY, that can give you the protocol you want even if your building is set up to legacy telco standards. Another reason that customers are asking for Ethernet is that it tends to be less expensive per Mbps than SONET services, where available.

Are you looking for more bandwidth? Why not check for fiber buildings and see if yours or one nearby is lit? If close, you may be able to get a carrier to make the necessary installation with no or discounted construction costs if you will be ordering a high bandwidth level. Perhaps you can find other tenants and pool your request to make the installation even more attractive.



Note: Photo courtesy of Diego Silvestre on Wikimedia Commons.

Fiber Optic ISP

Not so long ago, Internet service came through the telephone as a collection of audible beeps and squeaks. That evolved into dedicated landline and wireless broadband. The next step has already been taken by the largest companies. Now, medium size businesses are also looking for a fiber optic Internet service provider.

Fiber optic Internet service for residential users is the domain of Verizon’s FiOS. Google will soon enter the market on a test basis with a new benchmark of performance: 1 Gbps. But business broadband connections have moved past the Gbps upper limit, with 10 Gbps service becoming more common for major organizations. The technology is proven. The question is how much bandwidth do you need and where do you need it?

The key to fiber optic levels of telecom service is the “lit” building. That’s a location where fiber optic cable has been pulled into the facility and connected to terminal equipment. Once the fiber is lit by a service provider, the building is considered to be “on net” and able to select from a wide variety of service options. This facility can also be a jumping off point to provide fiber optic service to other nearby buildings. The most expensive and time consuming aspect of fiber optic service is the initial fiber construction.

What types of fiber optic bandwidth services are available? They typically fall into two categories. The first is traditional SONET / SDH telecom services. These are the original telco standards for voice and data over fiber optic strands. The most basic service is OC-3 or Optical Carrier, level 3. This is a 155 Mbps bandwidth service based on the same TDM or Time Division Multiplexing technology as copper based T1 and T3 lines. In fact, DS3 bandwidth at 45 Mbps is most often delivered as part of an OC-3 signal that can transport 3 of these DS3 services.

The SONET standard fiber optic services include OC-12 at 622 Mbps, OC-48 at 2.5 Gbps, OC-192 at 10 Gbps and OC-768 at 40 Gbps. This highest levels are most often used by carriers, themselves, as their backbone networks.

The other category of fiber optic service is Carrier Ethernet or Metro Ethernet. Ethernet services are standardized at the same levels seen in LAN networks. These are 10 Mbps standard Ethernet, 100 Mbps Fast Ethernet, 1000 Mbps GigE, and 10 Gbps or 10 GigE service. Intermediate service levels are generally available, as Ethernet is readily scalable.

How do you decide between SONET and Ethernet Internet connections? Both are reliable, proven technologies that can deliver the bandwidth you desire. What often differs is availability and price. The best approach is to get a complete selection of fiber optic service quotes from a telecom broker and compare pricing on the services available for your business location. You may be surprised at how affordable the higher bandwidths have become.