What is a T1 line? How fast is T1 service?

What is a T1?  What is the speed of a T1?

What is a T1? What is the speed of a T1?

A T1 line is a communications transmission service that provides symmetrical bandwidth via 2 twisted copper wires. Businesses have long relied on telephone companies for this age-old service, which was originally developed for the Bell System. While standard telephone lines can only transfer voice and data at 56 kbps using a modem, a T1 line, can transmit data at a speed of 1.544 Mbps. T1 service can be appropriate for high-speed data transmission, Internet access, voice, and video conferencing, depending on their type and configuration.

A T1 can be provided as a channelized or unchannelized service. In a channelized T1, the bandwidth is divided into 24 channels, with each channel having a capacity of 64 Kbps. 23 of these channels can be used to support 23 simultaneous voice calls. The 24th channel is used for signaling information such as caller ID.

An Integrated T1 is provisioned to handle voice and data traffic simultaneously. Some businesses utilize Integrated T1 lines for the convenience of having one provider. However, sharing the connection for both voice and data applications reduces the effective speed of the connection well below its full capacity since channels are allocated for either voice or data.

A Data T1 line, also known as T1 Internet, is an unchannelized T1 that is configured to transport data signals only. Its full capacity, 1.544 Mbps is used to carry Internet service, point-to-point data or VoIP (Voice over Internet Protocol).

For businesses that need bandwidth in excess of 1.544 Mbps, T1 lines can be bonded together to make them work as a single circuit. Two T1 lines, for instance can deliver 3.0 Mbps, four T1 lines deliver 6.0 Mbps, and so on.

So why are T1 lines so popular? Because T1 lines have been a stable business offering of phone companies for decades, T1s are a “comfortable” service. T1 pricing is about $250 per month per line, depending on your location and carrier. There are many T1 alternatives that provide comparably priced bandwidth that offer far greater performance and flexibility.

Consider the company that determines 5 Mbps is the right size bandwidth for its needs. Utlizing T1 lines, the IT manager can choose 4.5 Mbps (3 bonded T1s) or 6.0 Mbps (4 bonded T1s). Since companies typically prefer not to under-subscribe their bandwidth, most will get 4 bonded T1s, and pay extra for un-needed bandwidth. They will also need bonding equipment, such as a managed router for the Ethernet hand-off. Some carriers will provide this equipment, but quality may be less than desirable as they try to keep their costs down. It’s not uncommon for a port to go out, resulting in fewer operating T1 lines and less than desirable performance.

If you prefer more efficient and modern voice and data transport mediums with inherent flexibility to meet your needs, consider Fixed Wireless broadband. Skyriver Enterprise delivers business-grade Fixed Wireless broadband, with dedicated bandwidth to meet your specific bandwidth needs, without any extra equipment to pay for or worry about. Skyriver’s Ethernet hand-off can easily scale up to GigE in a matter of hours, not 30-45 days required from legacy T1 providers.

More about Skyriver services -

Skyriver Enterprise is perfectly suited for cloud computing, VoIP and other real-time business applications. Skyriver Private Network is designed for companies that require private and secure connectivity between office locations. Contact Skyriver for performance specs and a free quote.

Jenny Bourbiel

About Jenny Bourbiel

Jenny Bourbiel is Vice President of Marketing for Skyriver. She oversees marketing, public relations, product management and customer relationship programs for Skyriver. A new addition to the Skyriver portfolio of services is the company's innovative 5G class millimeter wave broadband service, Skyriver Magnitude (TM). As a lifetime marketer and technology enthusiast, she bonds smart customer insights and creative thinking to connect people with Skyriver broadband services in profound and lasting ways. Since joining the Skyriver team, her customer centric initiatives have strengthened new customer growth as well as customer loyalty. Jenny brings a wealth of marketing knowledge to Skyriver, in both executive and brand management roles with leading consumer and technology brands including Verizon Wireless, Hilton Hotels, DirecTV, WD-40, and AT&T Wireless. At AT&T Wireless, she managed the marketing strategy for next generation wireless services, including the launch of the American Idol partnership that fueled the popularity of texting in the U.S. Prior to joining Skyriver, Jenny was a Marketing Consultant, working with companies such as Cox Business, where her campaigns earned the CTAM Marketing Excellence Gold Award. Earlier, Jenny held the position of Marketing Vice President for Buzztime, an interactive online gaming company. Jenny’s passion for marketing extends to her community involvement. She has sat on various marketing committees, and was on the Board of Directors for the Arts Center Foundation. Jenny holds a B.S. Degree in Business Administration from San Diego State University with an emphasis in Marketing and a minor in Spanish.