Summary:To pass Cisco certification exams, you have to know more than one way to do things.  Learn another method of configuring ISDN callback from Chris Bryant, CCIE #12933. Keywords:ccnp, bcran, pass, free, caller, id, callback, ppp, isdn, cisco, certification, exam, ccie, ccna Article Body:As a CCNA and/or CCNP candidate, you've got to be able to spot situations where Cisco router...