I see from your topology that you are using a fxs port to connect to your PBX. This is not a supported configuration. The reason behind it is the fxs port cannot pass on the dialed digits out to the PBX. This is the reason you are able to dial in one direction and not from the other side.
You should either connect a FXO or an E&M port with a compatible port on the PBX.
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...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...