T-1 carrier / Common line designations

What exactly does mean T-1 carrier?
Also can anyone list common line designations?

[Denis]

A dedicated phone connection supporting data rates of 1.544Mbits per
second. A T-1 line actually consists of 24 individual channels, each of which
supports 64Kbits per second. Each 64Kbit/second channel can be configured
to carry voice or data traffic. Most telephone companies allow you to buy
just some of these individual channels, known as fractional T-1 access.

T-1 lines are a popular leased line option for businesses connecting to the
Internet and for Internet Service Providers (ISPs) connecting to the Internet
backbone. The Internet backbone itself consists of faster T-3 connections.

T-1 lines are sometimes referred to as DS1 lines.


Definition: Webopedia

That is the common line designations:

• ISDN - Two DS0 lines plus signaling (16 kilobits per second), or 128 kilobits per second
• T1 - 1.544 megabits per second (24 DS0 lines)
• T3 - 43.232 megabits per second (28 T1s)
• OC3 - 155 megabits per second (84 T1s)
• OC12 - 622 megabits per second (4 OC3s)
• OC48 - 2.5 gigabits per seconds (4 OC12s)
• OC192 - 9.6 gigabits per second (4 OC48s)

[juandc]

It is very good. Is any higher connection than OC-192?.

[Denis]

Originally Posted by juandc

It is very good. Is any higher connection than OC-192?.

Yes See below:

OC192 10 Gbps
An OC192 is the equivalent of having 5,376 T1 lines or 192 T3 lines.
OC192 = 10,000 Mbps/10.0 Gbps

OC256 13.271 Gbps
An OC256 has 172,032 channels running at 64-Kbps.
OC256 = 13,271 Mbps/13.3 Gbps

OC768 40 Gbps
OC768 can transit data from 21,504 T1's.
OC768 = 39,812 Mbps/39.8 Gbps