[Asterisk-Users] Wacky Failover Situation w/SIP - Bug?

[Douglas Garstang]

I have a weird situation. A polycom phone is configured to use system pbx1 as the primary outgoing 'proxy', followed by systems pbx3 and pbx2. All three systems have identical sip.conf files. The phone is registered on pbx1.

I shut down the Asterisk application on pbx1. I make a call. The phone sends an INVITE to pbx2. Pbx2 sends back a 407 Proxy Auth message to the phone. The phone sends an ACK followed by the INVITE with the credentials. What does Asterisk do? It sends the 407 Proxy Auth message again. Why? The phone of course re-sends the INVITE with the credentials again, and of course Asterisk sends the 407 again.

After some period of time, say around 5min, it all starts working again. The phone still has not registered with pbx2 yet. The phone sends INVITE, Asterisk sends 407 Proxy Auth Required, the phone sends an ACK and an INVITE with the credentials and Asterisk sends TRYING.

It looks like an Asterisk problem. As far as I can see, the phone is doing the right thing. Asterisk should not be sending Proxy Auth required over and over again.

Also, if I change the sip password for the phone while this is happening to something bogus (and do a 'sip reload'), Asterisk still sends the proxy auth over and over. It obviously isn't reading sip.conf. This looks like a bug to me, but I can't work out why Asterisk is having a problem routing a call?

Doug.