Interworking between H.320/H.324 and SIP

摘要

Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.

主权项

1. A method comprising:
receiving by a first gateway device a SETUP message from a first H.320 or H.324 endpoint device; sending by the first gateway device a SIP INVITE message to a second gateway device; receiving by the first gateway device a SIP 100 TRYING message from the second gateway device, receiving, into memory of a first gateway device, a SIP OK message from a second gateway device; obtaining by the first gateway device, first information from the first H.320 or H.324 endpoint device indicative of capabilities supported by the first H.320 or H.324 endpoint device; sending a SIP OK message to the second gateway device after the first information has been obtained; obtaining, by the first gateway device, second information from a second H.320 or H.324 endpoint device indicative of capabilities supported by the second H.320 or H.324 endpoint device; and establishing a media communication channel between the first H.320 or H.324 endpoint device associated with the first gateway device and the second H.320 or H.324 endpoint device associated with the second gateway device based on their respective capabilities.