| The most common method of configuring ISDN is | | | | Dialer strings are used on dialer profiles. Note that |
| with dialer maps, but dial information can also be | | | | each logical interface has a different IP address, a |
| configured on a logical interface. To pass the CCNA | | | | different remote router to dial, and a different dialer |
| exam, you must know how to configure and | | | | string, but they will be using the same physical |
| troubleshoot both dialer maps and dialer profiles. | | | | interface to dial out. The commands dialer pool and |
| Dialer Profiles allow different dialing information to be | | | | dialer pool-member are used to link the logical and |
| configured onto logical interfaces. The logical | | | | physical interfaces. The number following each |
| interfaces may have different dialing destinations, | | | | command must match for the logical interface to |
| different remote router names, etc., but they'll be | | | | correctly bind to the physical interface. |
| using the same physical interface. | | | | |