| Subject | English | Thesaurus |
| IT, abbr. | Association for Local Telecommunications Services | ALTS (organization, USA) |
| abbr. | Capital Region Emergency Services Telecommunications | CREST |
| IT, abbr. | Federal Telecommunications Services - 2000 | FTS-2000 (USA) |
| NGO, abbr. | Foundation For Innovation Regional Services And Telecommunications | FIRST |
| tech., abbr. | Government Emergency Telecommunications Services | GETS |
| abbr. | International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Services | TELSIKS |
| telecom., abbr. | Networking And Telecommunications Services | NTS |
| mil., abbr. | Personal Communications Services/Universal Personal Telecommunications | PCS/UPT |
| abbr. | Telecommunications and Internet converged Services and Protocols for Advanced Networking | TISPAN (http://www.rfcmd.ru/glossword/1.8/index.php fountik) |
| telecom., abbr. | Washington Telecommunications Services and Operations | WTSO |
| telecom., abbr. | Wireless Telecommunication Services | WTS |
| telecom., abbr. | Wireless Telecommunication Services Facilities | WTSF |
| comp., net., abbr. | Wireless Telecommunications Information & Services | WTIS |
