6.2 Dialer Profile
6.2.4 Dialer map class
The dialer map class is an optional element that defines specific characteristics for a call to a specified dial string.

For example, the map class for one destination might specify an ISDN speed of 56 Kbps, whereas a map class for a different destination might specify an ISDN semipermanent connection. The dialer map class can also contain optional dialer-timing parameters, including dialer fast-idle, dialer idle-timeout, and dialer wait-for-carrier-time. A map class is an optional element of a dialer profile and can be used by (or referenced from) multiple dialer interfaces.

Map classes are optional; they are used to specify different characteristics for different types of calls on a per-destination basis.

Figure shows the usefulness of map class. Calls to three different destinations require many parameters that are the same from one destination to another. Instead of reentering these commands under each of the concerned dialer interfaces, it is being told to refer itself to the map class for further configuration parameters. As you can see, the same map class can be used for multiple dialer interfaces. The configuration parameters of a map class are specific to one or more destinations.

After the interface is configured, an optional dialer map class can be defined. In the Figure, the dialer interface dialer3 is associated with map class Eng. Any dialer associated with this map-class sets the ISDN line speed to 56 Kbps. In the Figure, you can see that dialer 2 and dialer 3 both are associated with map-class Eng.

You can use the map-class dialer class-name  command to specify a map class and enter the map-class configuration mode.

In this example, the dialer isdn speed 56 command specifies an ISDN bit rate of 56 Kbps for use in the map class. You can set the speed to 56; 64 is the default value.

Additionally, the other map class commands listed in the Table are available in map-class configuration mode.