I'm test a Simple Remote Phone. All was working well until:
13:45:29.773 SIP.REMOTE-SECURITY Dropping SIP traffic from 207.xxx.xxx.xxx on port 25000
What could be the cause? What debug can I run to see why SIP traffic dropping in the 7100?
rebooted everything (phone, Access Router, etc)
generated new SIP Auth password and reboot phone
checked ISP if they were blocking port 25000
thanks in advance!
Bryan, we typically see this happen when one or more messages from the remote phone gets dropped in transit. For example, in a normal SIP transaction, the phone will send a Register, the 7100 responds with a 401 Authorization Required, the phone responds with a Register w/Authentication, and assuming everything is OK with the credentials, the 7100 responds with a 200OK. If, for example, the phone does not receive the 401, it will continue to send Register messages without authentication. If the 7100 sees Register without authentication in response to a 401, it will blacklist the IP after a certain number of attempts. Rotating debug on the 7100 will confirm that the 7100 is responding correctly, but you'd more than likely need a packet capture at the remote side to show the packets not arriving. Thanks