we have a Callmanager 4.1 with a Fax- and Voicemailserver (Callisto with Capi). The Faxserver is termination on H323 IOS-GW whis the E1 to PSTN.
This works fine.
Now we will upgrade for CUCM61 and will use the Gateway with MGCP. The Callisto Fax-Server now can SIP. Can we use MGCP and SIP simultan on the IOS-GW ? Then the SIP-Trunk on CUCM6.1 works not with T.38.
Any ideas or how do you do that?