PPP Callback Commands for DDR

This chapter describes the function and displays the syntax for PPP callback commands for DDR and ISDN. For more information about defaults and usage guidelines, see the corresponding chapter of the Dial Solutions Command Reference.

dialer callback-secure

To enable callback security, use the dialer callback-secure interface configuration command.

dialer callback-secure

dialer callback-server

To enable an interface to make return calls when callback is successfully negotiated, use the dialer callback-server interface configuration command.

dialer callback-server [username dialstring]

username	(Optional) Identifies the return call by looking up the authenticated host name in a dialer map command. This is the default.
dialstring	(Optional) Identifies the return call during callback negotiation.

map-class dialer

To define a class of shared configuration parameters for PPP callback, use the map-class dialer global configuration command.

map-class dialer classname

classname

Unique class identifier.

ppp callback

To enable a dialer interface that is not a data terminal ready (DTR) interface to function either as a callback client that requests callback or as a callback server that accepts callback requests, use the ppp callback interface configuration command.

ppp callback {accept | request}

accept	Enables this dialer interface to accept PPP callback requests (and function as the PPP callback server).
request	Enables this dialer interface to request PPP callback (and function as the PPP callback client).