Emulation of phone extensions in a packet telephony distribution system
US6697358B2 · kind B2 · utility
114Cited by
13References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Jul 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/003
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for emulating phone extensions in a packet telephony distribution system include using a gateway and an adapter. Signaling protocols between the gateway and the adapter provide procedures to enable typical analog phone system characteristics such as a dial tone and a line-in-use indicator. During an incoming or outgoing call, users of multiple phones on the packet telephony distribution system can make and receive calls or join a call in progress using methodologies commonly used for typical analog phone systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.