Have cme 4.01, IOS 12.5(15)T. But recently can't register with sip provider via sip-ua.
I have account with sipgate.co.uk that was working fine until recently with sip-ua as follows:
authentication username ????? password ?????
retry invite 3
retry response 3
retry bye 3
retry cancel 3
retry register 10
timers connect 100
timers connection aging 30
registrar ipv4:188.8.131.52 expires 600
and a ephone-dn with secondary number set as my username above.
debug ccsip all shows :
SIP/2.0 403 Forbidden (client configuration error)
I've spoken with provider who tell me expires has been reduced from 3600 to 600 and that is only change.