2901 CME: Problem with incoming call via SIP Trunk

Question

Dear All,
I have seen some others posted similar question regarding this but mine still doesn't work by using the reference solution.
Mine is quite standard setup too -> CME setup on my 2901 router, analog phone attach to my FXS port my outgoing calls are working  fine via SIP but my incoming calls are not.  Caller only listen to engage tone and analog phone is not ringing at all. Attached with my config and trace log of ccsip messages. Kindly assist. Thank you so much.

Answer 1

Hi Carlo,
Here it is
CME_2901#show sip-ua timers
SIP UA Timer Values (millisecs unless noted)
trying 500, expires 180000, connect 500, disconnect 500
prack 500, rel1xx 500, notify 500, update 500
refer 500, register 500, info 500, options 500, hold 2880 minutes
, registrar-dns-cache 3600 seconds
tcp/udp aging 5 minutes
CME_2901#show sip-ua retry
SIP UA Retry Values
invite retry count = 6   response retry count = 6
bye retry count    = 10  cancel retry count   = 10
prack retry count  = 10  update retry count    = 6
reliable 1xx count = 6   notify retry count   = 10
refer retry count  = 10  register retry count = 6
info retry count   = 6   subscribe retry count = 6
options retry count = 6
CME_2901#show sip-ua min-se
SIP UA MIN-SE Value (seconds)
Min-SE: 1800