| Abbreviation | Definition |
|---|---|
| PTFP | Public Telecommunication Facilities Program |
| PTFP | Public Telecommunications Facilities Program |
| PTI | Payload Type Indicator |
| PTK | Post and Telecom of Kosovo |
| PTMC | PCI Telecom Mezzanine Card |
| PTML | Pakistan Telecommunications Mobile, LTD. |
| PTN | Portable Telephone Network |
| PTN | Private Telecommunication Network |
| PTN | Private Telecommunications Network |
| PTN | Provider Telecommunications Network |
| PTN | Public Telecommunications Network |
| PTO | Public Telephone Operator |
| PTP | Personal Telco Project |
| PTP | Point To Point |
| PTS | Priority Telecommunications Services |
| PTSC | Pentagon Telecommunications Service Center |
| PTT | Post, Telephone, and Telegraph |
| PTT | Push To Talk |
| PUHU | Pick Up Hang Up |
| PVG | Packet Voice Gateway |