Configuring DCC 725
By default, the system does not enable callback function and is not configured
with any Windows NT server callback dial number.
2 Configure the PPP callback server in the resource-shared DCC implementation
When resource-shared DCC are adopted to implement PPP callback, the PPP
authentication configuration at server end is the same as that of circular DCC,
except that the server in the resource-shared DCC implementation can only
originate a return call according to the dial number configured in the
local-user
callback-number
command. See “Configure the PPP callback server in the
circular DCC implementation” in Dial-up.
Use the local-user callback-number command to configure the callback user
and callback dial number in system view, and perform other configurations in
dialer interface view.
Table 760 Implement PPP Callback (Server Configuration) in Resource-Shared DCC
By default, the system does not enable the callback function.
Configuring ISDN Caller
Identification Callback
In an ISDN environment, implementing DCC callback through the ISDN caller
identification function requires no authentication, nor are there other
configurations requirements.
Features of ISDN caller identification callback
In the applications of ISDN caller identification callback, the callback server can process
a incoming call in three ways, depending on the matching result of the calling number
and the dialer call-in command at the local end:
■ Denies the incoming call: The dialer call-in command has been configured,
but no match is found for the dial-in number and the configured dialer callers.
■ Accepts the incoming call: The dialer call-in command is not configured,
or a match is found for the dial-in number and a
dialer call-in command
configured without the keyword “callback”.
■ Calls back: The dialer call-in command has been configured, and a match
is found for the dial-in number and a
dialer call-in command configured
with the keyword callback.
The best match for the incoming number and the dialer call-in commands is
determined on the basis of right-most matching. The character “
*
” in the number
represents any characters. If multiple
dialer call-in commands match the
incoming number, the following rules will apply for determining the best match:
■ Primary rule: The best match is the number with the fewest “
*
”.
Operation Command
Configure the callback user and callback
number
local-user username callback-number
telephone-number
Configure the local end to be the PPP
callback server
ppp callback server
Disable the local end to be the PPP
callback server
undo ppp callback server
Configure the PPP callback reference dialer callback-center dial-number
Disable the callback server function of the
router
undo dialer callback-center
