Voice over IP/Reference
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Appendices[edit | edit source]
Appendix A: Glossary of Terms[edit | edit source]
| ATA | Analog Telephone Adaptor | ||
| Broadband | Using multiple transmissions simultaneously over a single medium. | ||
| Baseband | Using a single transmission over a single medium. | CAS | Channel Associated Signaling |
| CCS | Common Channel Signaling | ||
| DTMF | Dual-Tone Multi-Frequency | ||
| DS0 | 64K Channel | ||
| DSL | Digital Subscriber Line | ||
| E1 | 32 DS0 Channels | ||
| FXO | Foreign eXchange Office | ||
| FXS | Foreign eXchange Subscriber | ||
| IP | Internet Protocol - IP is the common protocol, or language, used by all devices on the Internet to communicate regardless of vendor. | ||
| MGCP | Media Gateway Control Protocol | ||
| NAT | Network Address Translation - The translation of a Network (IP) Address to another address by a gateway or router device | ||
| PAT | Port Address Translation - The translation of multiple inside IP addresses to a single IP address on the outside, used in typical home applications. | ||
| PBX | Private Branch Exchange | ||
| PoE | Power over Ethernet | ||
| POTS | Plain Old Telephone System. See PSTN below. | ||
| PSTN | Public Switched Telephone Network | ||
| Q.931 | Layer 3 ISDN Signaling | ||
| Q.921 | Layer 2 ISDN Signaling | ||
| RFC | Request For Comments | ||
| RTCP | Real-Time Control Protocol | ||
| RTP | Real-Time Transport Protocol | ||
| SIP | Session Initiation Protocol | ||
| T1 | 24 DS0 Channels |