I sow that the 7905 take a long time (3min) to enter in fallback mode. When it lose the connection to the central site I verify that after it detect the failed connecting to the main side it enters in a new registration process that tries to find the subscriber, the publisher and the finally SRST router. With this cycle we lose 3 min.
Note that with IP Phone 7940 I dont have this long delay. We just need to wait few seconds.
Re: IP phone 7905 take a long time to enter in SRST
If the SRST router is taking long time to kick in, then the delay cannot be avoided, but if there is delay in the IP Phone to send keep alives to the SRST router, that can be minimised using the h225 timeout tcp establish 3 command. In your case looks like the delay is due to the IP phone based on the fact that the 7940 does not have a long delay. The delay could be possibly due to the network and could have nothing to do with SRST.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...