Why it happens
- The far end did not respond, often because of a network or NAT problem.
- In SIP it often comes from a 408 or 504.
What to check
- Find out which side stopped answering; check reachability and NAT keep-alives.
Q.850 cause 102: Recovery on timer expiry
Recovery on timer expiry: a protocol timer ran out, for example no answer to a setup message in time.
102
- Q.850 name
- Recovery on timer expiry
- Group
- Protocol errors
- FreeSWITCH
- RECOVERY_ON_TIMER_EXPIRE
- Asterisk
- HANGUPCAUSE=102
- SIP response from a gateway
- 504 Server Time-out
- In SIP
- Reason: Q.850;cause=102