Hi Bogdan-Andrei, Thanks so much for your reply. Previously, I thought that the detection mechanism works as follows. The outbound proxy sends an OPTIONS message to an internal SIP server every 3 seconds (ds_ping_interval). If the outbound proxy fail to receive the reply message three times (ds_probing_threshhold) in a row, it regards the internal SIP server as dead. With tr_timer, the outbound proxy can correctly detect the status of an internal SIP server as expected.
The internal SIP server is enforced to stop in my test environment. Best regards, Chen-Che -- View this message in context: http://opensips-open-sip-server.1449251.n2.nabble.com/Detect-failed-SIP-server-tp7585427p7585499.html Sent from the OpenSIPS - Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users
