We currently use ISDN2 as a backup dialup solution for our 2811 routers.
We are replacing the 2811 with 4331 and are unable to configure the BRI NIM card with ppp encapsulation. The router responds with "ppp encapsulation not allowed on voice only interface."
Has ISDN2 dialup been dropped on the 4331 routers or are we using the wrong card?
Thanks for your assistance.
