Signaling and handling method for proxy transcoding of encoded voice packets in packet telephony applications
US6603774B1 · kind B1 · utility
49Cited by
10References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 9, 1998 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Oct 9, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Voice packets are redirected in packet telephony applications to a codec proxy system that makes voice endpoints involved in an end-to-end call appear to be using the voice codec required of it by the other endpoint, even if the endpoints do not possess the required codec capability. The codec proxy system acts as a broker during initial capability negotiations, and as a real-time transcoding facility between disparate codec capabilities once voice traffic begins. The resulting system allows non-standard, cost-optimized and/or feature specific packet voice endpoints to interoperate in a standards-based network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.