| Abbreviation | Definition |
|---|---|
| BTCL | Botswana Telecommunications Corporation Limited |
| BTCL | Botswana Telecommunications Corporations Limited |
| BTCL | Botswana Telecommunicatuions Corporation Limited |
| BTE | Big Telecom Event |
| BTE | Broadband Terminal Equipment |
| BTL | Bell Telephone Laboratories |
| BTL | Bharat Telecom Limited |
| BTLZ | British Telecom Lempel Ziv |
| BTMS | BITEK Telecommunications Management System |
| BTN | Billing Telephone Number |
| BTNA | British Telecom North America |
| BTNA | British Telecommunications North America |
| BTO | Betts Telecom Oklahoma |
| BTP | Business Telecom Products |
| BTPS | British Telecom Pension Scheme |
| BTPS | British Telecommunications Pension Scheme |
| BTRC | Bangladesh Telecommunication Regulatory Commission |
| BTS | Base Transceiver Station |
| BTS | Best Transmission Second |
| BTS | Business Telecommunications Services |