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b. Clear the Enable software compression box.
c. Clear the Negotiate multi-link for single link connections box.
d. Click OK.
13. Turn to the Network and Dial-up Connections window. Click the connection icon you just
created. Then, from the menu bar, select Advanced > Dial-up Preferences. In the Dial-up
Preferences dialog box, select the Callback tab and do one of the following:
{ Select the No callback option.
After the PPP authentication is passed in a call, this option prevents the callback server
from disconnecting the current connection and calling back. Instead, the server will maintain
the current connection and allow the client to access the LAN or the Internet.
{ Select the Ask me during dialing when the server offers option.
The callback server will use the callback number you input to place return calls.
{ Select the Always call me back at the number(s) below option.
The callback server will place return calls always at the number or numbers already set.
Configuring Router
# Configure a dial access control rule for dialer access group 1. Create a local user account userpc
for PC and configure PPP authentication for the account.
<Router> system-view
[Router] dialer-rule 1 ip permit
[Router] local-user userpc
[Router-luser-userc] password simple userpc
[Router-luser-userc] service-type ppp
[Router-luser-userc] quit
# Assign an IP address to interface Serial 2/0 and configure physical layer parameters.
[Router] interface serial 2/0
[Router-Serial2/0] ip address 100.1.1.1 255.255.255.0
[Router-Serial2/0] physical-mode async
[Router-Serial2/0] async mode protocol
# Configure PPP encapsulation and other PPP parameters on the interface.
[Router-Serial2/0] link-protocol ppp
[Router-Serial2/0] ppp authentication-mode pap
[Router-Serial2/0] ppp pap local-user Router password simple Router
# Configure the interface to assign an IP address to the remote end.
[Router-Serial2/0] remote address 100.1.1.2
# Specify interface Serial 2/0 as the PPP callback server, and set the callback reference to user
mode. DCC uses the dial string corresponding to the username configured in the dialer route
command to place return calls.
[Router-Serial2/0] ppp callback server
[Router-Serial2/0] dialer callback-center user
# Enable C-DCC on interface Serial 2/0 and configure C-DCC parameters.
[Router-Serial2/0] dialer enable-circular
[Router-Serial2/0] dialer-group 1
[Router-Serial2/0] dialer route ip 100.1.1.2 user userpc 8810048
[Router-Serial2/0] quit
# Configure the user interface to be used and enable modem dial-in and dial-out on it.
[Router] user-interface tty1
[Router-ui-tty1] modem both
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