Our WAN is built on frame relay with ISDN backup. So in the event of the frame relay circuit failing the remote router dials the main office.We have two routers at the main office that can accept ISDN connections from the remote sites.At present we ...

Trying to connect a PBX to a PSTN using 2 Cisco 1750 routers with VIC-2FXO-EUR cards.If we ring the number attached to the PSTN then we get a dial-tone and we can key in digits. According to debug information this call gets routed to the other route...