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 |