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Telecom Acronyms
| ATA | Analog Telephone Adapter |
| ENUM | Telephone Number Mapping |
| CPE | Customer Premises Equipment |
| CSR | Customer Service Record |
| CSU | Channel Service Unit |
| DHCP | Dynamic Host Control Protocol |
| DID | Direct Inward Dial |
| DSU | Data Service Unit |
| DTMF | Dual Tone Multi-Frequency |
| ECM | Error Correction Mode |
| FoIP | Fax Over Internet Protocol |
| IAD | Telephone Number Mapping. |
| ISDN | Integrated Services Digital Network |
| ITSP | Internet Telephony Service Provider |
| IVR | Interactive Voice Response |
| LNP | Local Number Portability |
| MOS | Mean Opinion Score |
| MTA | Multimedia Terminal Adapter |
| NAT | Network Address Translation |
| PBX | Private Branch Exchange |
| PRI | Primary Rate Interface |
| POTS | Plain Old Telephone Service |
| PSTN | Public Switched Telephone Network |
| RFC | Requests for Comment |
| RTP | Real-Time Transport Protocol |
| SIP | Session Initiation Protocol |
| STUN | Simple Transversal of UDP through NAT |
| UDP | User Datagram Protocol |
| VAD | Voice Activation Detection |
| VoIP | Voice over Internet Protocol |