Here in the diagram attached, there are two routers and two switches. Both routers connect to WAN side but I want only one of them to have ISDN backup line which activates itself only when both WAN sides of two routers being down at the same time.
Is it even possible? I appreciate your any supports and comments in advance.
(1) ISDN is a dial-up session, which according to my understandings charges money based on how long the dialup session is established. (2) ISDN I/F is always ACTIVE (with I/F status up / up), however it only transfers data when both WAN I/F(which has higher AD values) go down, the static default route will be used. Therefore, ISDN I/F will dial up and start connecting itself.
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...