Is it possible to configure access with telnet to a router over a isdn line.. for management...???
it is an Callmanager express, so normal the isdn line is in use for voice...
As indicated before: "the voice BRI cards of cisco router do not support data"
In other words: Data BRI cards are different ones, and do not support voice.
Moreover: the rotuer that you have do not have an ISDN modem inside. these are sold seprately in modules of 6.