But I would like asterisk to accept the IMTs.. and the only way to do that is to find out what DS0 to take and place the calls on based on the SS7 messages. I guess one of the things I'm not clear on is going from SS7 to SIP-T, I'm not sure where the state machine exists..
-Brett



Kevin P. Fleming wrote:

[EMAIL PROTECTED] wrote:

Just swiming around in it here.. Any thoughts? It seems to me that you MUST use something like MGCP or H.248 to connect the call to the PSTN (media gateway) since the specific DS0 to be utilized will be included in the ISUP messages..


No, you can just do what you are doing now, and use SIP to talk to your gateway. The SIP "user" (Asterisk) has no concept of how many channels exist on the TDM side, or their arrangement, or anything like that.

If Asterisk could be an MGCP gateway controller (whatever the right term for that is) it's possible that it could control MGCP gateways directly, but it would still need to speak some sort of signaling with the PSTN to setup/teardown the calls.



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