Patent · US Active

Codec negotiation

US8502855B2 · kind B2 · utility

1Cited by

0References

41Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Michael Lindström · Tullinge, SE
Andreas Witzel · Herzogenrath, DE
Jan Erik Lindquist · Ayacucho, PE

Key dates

Filing date	Apr 28, 2008
Grant date	Aug 6, 2013
Priority date	—
Expiry date	Sep 27, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L69/24
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of interworking CS (Circuit Switched) video calls with video calls using IP multimedia protocols is provided. According to the method, an interworking function receives signalling comprising an indication of the codec capability of a CS terminal involved in the CS video call, as part of a MONA (Media Oriented Negotiation Acceleration) negotiation. Thereafter IP codec negotiation is initiated. And thereafter the MONA negotiation is continued and/or completed. Thus the codec capabilities and/or preferences of the CS terminal can be taken into account during the IP codec negotiation with the IP endpoint.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.