| Abbreviation | Definition |
|---|---|
| TOLA | Telecommunications and Other Legislation Amendment |
| TOM | Telecom Operations Map |
| TOMS | Telecom Operations Management System |
| TOPS | Terahertz to Optical Pulse Source |
| TOS | Temporarily Out of Service |
| TOS | Terms Of Service |
| TOS | Testing Operation System |
| TOSL | Telecommunications Ombudsman Service Limited |
| TOU | Time Of Use |
| TP | Telephone Pole |
| TP | Typical Provider |
| TPB | Talking Phone Book |
| TPC | The Phone Company |
| TPC | Third Party Crossconnect |
| TPC | Transmit Power Control |
| TPDU | Transport Protocol Data Unit |
| TPE | Telephony Platform Engine |
| TPE | Transport Procurement Engagement |
| TPI | Telecom Performance Index |
| TPI | Telecom Products Inc |