[OpenSIPS-Users] Register problem, 2 UA address conflict

Robert Dyck rob.dyck at telus.net
Sat Aug 15 15:39:20 EST 2020

I should explain the consequence of this error.
A and B register with the same AOR. A receives the correct 
instance ID while B receives A's ID. There is a call to the AOR. B 
answers the call and sends 200 OK and identifies itself 
incorrectly. Caller receives 200 OK and sends an ACK to the 
instance. Opensips translates the instance to an IP address and 
routes the ACK to A. B times out since it didn't receive an ACK 
and drops the session.

I hope that helps
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