Difference between revisions of "VoIP abbreviations"
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Revision as of 14:39, 16 January 2013
| Abbr. | Meaning |
|---|---|
| A/D | Analog-to-digital converter |
| CO | Central Office or telephone exchange |
| D/A | Digital-to-analog converter |
| DTMF | Dual-tone multi-frequency signaling |
| E1 | E1 carrier used to carry ISDN PRI between Telco and customer in Europe |
| E.164 | E.164 is a international public telecommunication numbering plan used in the PSTN |
| ISDN | Integrated Services Digital Network |
| ISDN BRI | ISDN Basic Rate Interface. 2 B channels and 16 Kbps D channel |
| ISDN PRI | ISDN Primary Rate Interface. 30 B channels and 64 Kbps D channel in Europe |
| ITU | International Telecommunication Union |
| ITU-T | ITU Telecommunication Standardization Sector |
| PABX | Private automatic branch exchange - See PBX |
| PBX | Private branch exchange - A privat telephone exchange |
| POTS | Plain old telephone service |
| PSTN | Public Switched Telephone Network |
| Q.931 | Q.931 is the ITU standard ISDN connection control signalling protocol |
| T1 | T1 carrier used to carry ISDN PRI between Telco and customer in USA/Japan |
| Telco | Telephone company |
| VoIP | Voice over IP |