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New Member

Problem with ISDN BRI

Hi, I am facing problem with ISDN which description is as follows;

Customer has SIte A (Central) & Site B (Remote).

When Site B calls (which is a requirement & a recommended procedure, remote making call to Central when user require) Site A, Site B router is not able to connect (note that BRI interface is showing UP & gets disconnected after 24 Sec. This happens for all calls from site B to A.

But, if call is initaited from Site B to Site A, there is no problem and network is reachable.

Hardware is 2600 (Central) & 1603R (Remote).

Let me know if anyone has faced similar problem. Thanks in advance.


New Member

Re: Problem with ISDN BRI

make debug ppp authentication to see if it's a problem of password.

use show dialer to control the remaining time before disconnecting

New Member

Re: Problem with ISDN BRI

In addition to authentication, also look at the speed which your remote router is trying to connect. If the call is not able to connect at 64k, I have seen instances where calls drop after a 30 second period. Try forcing the call to connect at 56k.