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.
I took a look at the debugs. Without debug vpm signal it's pretty hard to tell what is going on. I can tell from the debugs that your IOS is pretty old. You can always try upgrading that to see if it helps.