No. The bri interface always shows up spoofing so if the isdn circuit was dead the router would never know. However you should set the router up with dialer pools and multilink ppp with a dialer load-threshold so that the extra lines will be brought up when required. If you have two dialer strings it will use the first and if this fails it will use the second. With this you would only need one ip address. Be aware that the router dials out on the last interace and receives calls in on the first.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.