This might be the wrong email list for this kind of question. The MGCP list at the Softswitch Consortium ( www.softswitch.org http://www.softswitch.org ) or at pulver.com would be more appropriate.

The answer is -- wrong idea. MGCP is a device control protocol, not a signalling protocol. You wouldn't try to map Q.931 to MGCP except some simplistic notions of connections. This would be local to a particular softswitch implementation, and thus not standardized.

You can ask how the Q.931 gets from the gateway to the softswitch. It isn't over MGCP! Generally, the accepted notion is that the MG terminates Q.921, and uses SCTP and IUA to transport Q.931 to the Call Agent, which terminates the Q.931 messages, creating the appropriate MGCP commands to make the right connections. The Call Agent might have to map Q.931 to whatever protocol it uses to connect to another Call Agent. That might be ISUP (Q.BICC to be exact), H.323, or SIP.

Brian

-----Original Message----- From: Jeff Jenkins [mailto:jjenkins@jetstream.com] Sent: Wednesday, October 04, 2000 6:57 PM To: ITU-SG16@mailbag.cps.intel.com Subject: Q.931 package for MGCP?

Anyone aware of a Q.931 package for MGCP? I am interested in mapping Q.931 to MGCP.

-- jrj