We'd like to use the DNS SRV records feature and the device is not behaving as we would have expected. The configuration we've used includes 'Register' option set to 'yes' and 'Make Call Without Reg' option set to 'no'.
The phone registers to a given SIP proxy (it has several options through DNS SRV records). Whenever this proxy fails (it's no longer available), the device doesn't try to register with a different proxy.
If we try a call from the phone, it successfully contacts one of the others proxies offered in the DNS SRV records.
Also, we can see the NAT keepalive messages (we're using $NOTIFY in our configuration) going to a working sip proxy. But we can't see the REGISTER message when the proxy fails even though the device seems to realize about the proxy failure.
Should the phone, after detecting the proxy failure, attempt to register with the new available proxy server?
Sw Ver: 5.2.5(0110e)
Hw Ver: 1.0.2(6776)
We saw the same results with last sw version: 6.1.5a
Thanks in advance,