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DCC Configuration Examples 741
Figure 238 Network for the DCC application providing NT server-to-router callback
1 Configure RouterA:
[Router] dialer-rule 1 ip permit
[Router] interface async 0
[Router-Async0] async mode protocol
[Router-Async0] link-protocol ppp
[Router-Async0] ppp callback client
[Router-Async0] ppp pap local-user Router password simple Router
[Router-Async0] ip address ppp-negotiate
[Router-Async0] dialer enable-circular
[Router-Async0] dialer-group 1
[Router-Async0] dialer route ip 100.1.1.254 8810052
2 Configure NT server:
a Configure the modem connected to the PC to be in “autoanswer mode”, open
[Start/Programs/Accessories/Communications/Dialup Network], click [Set up
new connection] in the [Dialup Network] window, select the [Server type] page
in the established new connection, and perform the following operations:
b First, open the [Network attributes/Services] page, add “remote access server”
in it and configure RAS attribute, click the <Add> button to install the modem,
and set the modem attribute to “Dial-out and dial-in”. If the modem has been
installed, click <Configure>. Click the <Network> button on the right to set the
network attributes of RAS, including:
■ Select “TCP/IP” in both [Dial-out protocol] and [Server setting].
■ Click <Configure> on the right to configure an address assignment method
for the dial-in client. It can be either “Use DHCP” or “Use static address
set”.
■ Select [Allow any authentication] to configure “Encryption setting”.
c Then, select the menu bar [Management tools/Server management] to enable
remote accessing service.
d Finally, select the menu bar [Management tools/Remote access management]
to enter the management interface, select [Users/Authorities] in it, and choose
the user that can implement remote access. Three callback attributes are
available, including:
■ No callback
■ Set by the dial-in party: The ppp callback ntstring dial-number
command should be configured on the router if this method is selected.
■ Preset to number: If this method is selected, the dial-number set on the
router will be invalid and the NT system will dial the preset number when
placing a return call.
PSTN
88100528810048
Router A
Modem
Modem
Callback ServerCallback Client
Async1