T1
Technology & Computing abbreviation · Telecom
| Stands for | Transmission System 1 |
|---|---|
| Categories | Technology & Computing |
T1 stands for Transmission System 1, a telecom abbreviation.
Digital telephone and data line carrying 1.544 Mbit/s, divided into 24 channels of 64 kbit/s each, used in North America and Japan for business phone systems and dedicated internet access. Europe's equivalent is E1 at 2.048 Mbit/s.
Example: In 1999 the office shared a single T1 line for internet access across 50 employees.
Usage notes
Bell Labs introduced the T-carrier system in 1962 to carry multiple calls over copper between telephone exchanges. T1 lines were prized for reliability and guaranteed bandwidth, though expensive. Ethernet over fiber and business broadband have largely replaced them. The 24 channels are called DS0s.
Related abbreviations
More telecom abbreviations
- RJ11 – Registered Jack 11
- RSSI – Received signal strength indicator
- SAR – Specific absorption rate
- SDR – Software-defined radio
- SIM – Subscriber Identity Module
- SMS – Short Message Service
- TDD – Time-division duplex
- TDMA – Time-division multiple access
- TTY – Teletypewriter (Unix terminal)
- UC – Unified communications
- UMTS – Universal Mobile Telecommunications System
- USSD – Unstructured Supplementary Service Data