I am setting up inbound calling on my SIP trunk. I have run into a problem with inbound sip limitation with blast groups. If I have a certain number of users (more than 8), the initial blast group just rings and goes nowhere. I have confirmed this with Cisco support, but I am guessing that there is a workaround or trick to do what I need to. Thanks for your help.
This is a CLI fix for this problem, but I've seen this resolve this issue when a "generic SIP trunk provider" is programmed in CCA. Put this in your incoming dial-peers for the SIP trunk:
dial-peer voice XXXX voip
voice-class sip rel1xx disable