Hello everyone. I have recently decided to get in to Cisco's phone offerings with my ISR2 (2911) and have been looking to integrate Exchange 2010 UM with CUCME. Setting up the dial peer was easy, as was getting the phones to register via SIP and programming the phones appropriately to be able to call in to Exchange as well as each other. What I can't seem to get working is the MWI. I keep getting Event ID 1344 on the Exchange server saying that communication of MWI "failed with 481 Call Leg/Transaction Does Not Exist." I have been scouring the Internet trying to find what I have configured incorrectly, to no avail. It's my understanding that all I need are the following configuration lines to get this to work:
sip-ua
mwi-server dns:<UM host FQDN> expires 3600 port 5065 transport tcp unsolicited
Not sure if the port should be the standard SIP 5060, the 5065 that Exchange seems to want to use for the dial peer, or something else, I've tried both 5060 and 5065. Neither have worked. I have also tried both ports with a udp transport. I'm assuming there's something I'm missing here.. Any help would be much appreciated.
