Comparing T1, EoC and Cable Broadband
Three business broadband options that cost the same but have different options.
By: John Shepler
Today, there are three excellent broadband options for the small to medium size business. They cost roughly the same, but offer different options. Which do you choose? Let’s take a closer look at business-class Cable, T1 lines and Ethernet over Copper.
T1 Lines Are the Legacy Standard
We’ll start with T1 lines because they are the mainstay of SMB connectivity. T1 lines come in several flavors depending on what you want to do with them. They’re all based on the same technology developed by the telephone industry half a century ago.
A Solid 1.5 Mbps Bandwidth
T1 is a T-carrier technology based on transmitting digital signals over ordinary twisted pair copper wiring. It takes two copper pair to make one T1 line. One pair is used for upload, the other for download. When used for telephony, one pair is talk and the other is listen. The speed of the digital signal on the line is 1.5 Mbps. This doesn’t vary. The equipment at each end of the line is synchronized to maintain a steady bit rate regardless of whether anything is being transmitted or not.
T1 For Telephone
Originally, the purpose of this arrangement was to transmit telephone calls in channels called DS0s. There are 24 channels on a T1 line. You can use them separately or combine all the channels to make one large broadband pipe. The most common T1 telephone line now is called a T1 PRI or ISDN PRI. It has 23 separate phone lines plus one channel for signaling and Caller ID.
Broadband T1 Lines
A broadband T1 line delivers a fully symmetrical bandwidth of 1.5 Mbps. The upload and download speeds are the same. This line can connect directly between twobusiness locations as a private line or it can be used to connect to the Internet or another network, such as a MPLS cloud network. When used as an Internet connection, the arrangement is called a dedicated T1 Internet connection. Dedicated means that the full bandwidth is always available for your use only.
Ethernet over Copper
The most direct competitor to T1 is now Ethernet over Copper or EoC. Ethernet over Copper uses the same twisted pair telephone wiring that T1 lines use. The main difference is that the equipment on each end uses a more advanced technology to transport higher bandwidth through each copper pair. Often multiple pair in the same binder cable are used to bring in a higher bandwidth EoC service.
EoC Bandwidth Options
Ethernet over Copper is available is bandwidths from 1 Mbps on up to typically 20 Mbps. In some areas, it is now possible to get speeds as high as 90 or 100 Mbps delivered over copper pair. Those are bandwidth levels that have demanded fiber optic connections until recently. EoC is also designed to be highly scalable. You order and EoC port at the speed you ultimately expect to need but only sign up for the speed you need now. In the future, you can have that speed raised by simply calling your service provider and the change will be made in days or even hours.
More Bandwidth, Same Money
A comparable service priced the same as a T1 line is 2x2 Mbps Ethernet or 3x3 Mbps Ethernet. Those designations mean that you get the same speed for upload and download, just like with a T1 line. Note that the bandwidth is as much as twice as high, however.
Cable Broadband Offers High Bandwidth
The third option is business class Cable broadband. This service is offered by Cable TV companies, such as Comcast, that also provide consumer broadband. The coaxial cables used for Cable TV have tremendous bandwidth capacity and can easily transport broadband as well as television signals. You connect via a Cable modem. The latest Cable modem standard is DOCSIS 3.0 that can deliver 50 or 100 Mbps to business users.
Shared vs Dedicated Bandwidth
It may seem amazing that you can get 50 or 100 Mbps for the same price as a 1.5 Mbps T1 line, but there are some differences in the services. Cable bandwidth is shared, not dedicated. You’ll find that your bandwidth varies during the day depending on how heavily other users are uploading and downloading. Also, Cable bandwidth is not symmetrical. You may be getting 100 Mbps in the download direction, but your upload path will be only 10 or 15 Mbps. That may not matter if you are primarily accessing Web pages or watching video clips. It could be a problem if you expect to be transmitting video service or uploading very large files frequently.
Triple Play With TV & Phone
Cable does have one extra advantage in that you can get what’s called a “triple play” service. That’s broadband, telephone and television all on the same cable for one bundled price. This is especially attractive to businesses that have waiting rooms for the public, like doctor’s offices or auto service facilities. There are special bundle prices for public businesses like bars and restaurants.
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