METHODS AND SYSTEMS FOR PERFORMING CALL HANDOVER IN A MEDIA GATEWAY

Title:

METHODS AND SYSTEMS FOR PERFORMING CALL HANDOVER IN A MEDIA GATEWAY

Document Type and Number:

WIPO Patent Application WO2005022934

Kind Code:

A3

Abstract:

Methods and systems for controlling media stream handover in a media gateway includes establishing a call context between a first termination and a second termination in a media gateway. The first and second terminations are capable of bi-directional media stream communications associated with a call between first and second end users. In response to a handover event affecting the first termination, a third termination is added to the context. The third termination is initially capable of receive-only communications. The context is then modified such that the third termination becomes capable of bi-directional media stream communications and the first termination becomes capable of receive-only communications. The first termination is then removed from the context. The media stream handover may be performed using extensions to a media gateway control protocol and without using a conference bridge.

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Inventors:

HOU HAO (US)
DOLEH AHMED (US)
HE YONG (US)
NGUYEN TUAN MINH (US)

Application Number:

PCT/US2004/028546

Publication Date:

December 15, 2005

Filing Date:

September 02, 2004

Export Citation:

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Assignee:

SANTERA SYSTEMS INC (US)
HOU HAO (US)
DOLEH AHMED (US)
HE YONG (US)
NGUYEN TUAN MINH (US)

International Classes:

H04L29/06; H04W36/12; (IPC1-7): H04Q7/00

Foreign References:

US20040192294A1	2004-09-30
US6765931B1	2004-07-20
US20040235477A1	2004-11-25
US20040228336A1	2004-11-18

Other References: