Hello,
Had an issue recently where any calls to a Verizon Mobile number would get a fast busy signal. These outbound calls were going out our Verizon SIP trunks. Turns out there were 12 duplicate Diversion Header entries under the voice class sip-profile which was causing the issue on the Verizon side. I had to remove them all but one to fix the issue.
request INVITE sip-header Diversion add "Diversion: <sip:6169324055@10.1.0.12>"
I am positive the Diversion Headers were not manually entered and I have run into this once in the past. Does anyone have any idea what this would replicate itself on the router?
running CUCM 8.5
Cisco 2821 12.4(20)T6
SIP Cube:
sip-ua
set pstn-cause 1 sip-status 503
set pstn-cause 102 sip-status 503
retry invite 2
retry bye 2
retry cancel 2
retry options 2
sip-server ipv4:172.30.212.49:5384
g729-annexb override
Thanks!