We are using 4 FXO port for connecting to PSTN. It is used for outgoing calls only. Till yesterday it was working fine. Since today morning its not working.We are using H323 3745 cisco gateway.
Configuration looks fine. We have taken ccapi debug log and gateway is matching correct dial peers and translation rules are also working fine. Gateway issending call setup request to remote telco. At this this time calls are getting disconnected. Cause Code is 0X22 which for No Circuit. It will grt if someone can help me with possible reasone behind this cause code.