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Configuration example for router-to-router ISDN caller
identification callback with DCC
Network requirements
As shown in Figure 53:
• Router A and Router B are interconnected through ISDN BRI interfaces across an ISDN
network.
• Interface BRI 1/0 on Router A is assigned the IP address of 100.1.1.1/24 and interface BRI 1/0
on Router B is assigned the IP address of 100.1.1.2/24.
Configure ISDN caller identification callback with C-DCC between Router A and Router B, specifying
Router A as the callback client and Router B as the callback server.
Figure 53 Network diagram
Configuration procedure
1. Configure Router A:
# Configure a dial access control rule for dialer access group 1.
<RouterA> system-view
[RouterA] dialer-rule 1 ip permit
# Assign an IP address to interface BRI 1/0, and configure C-DCC parameters and the dial
string for placing calls to Router B.
[RouterA] interface bri 1/0
[RouterA-Bri1/0] ip address 100.1.1.1 255.255.255.0
[RouterA-Bri1/0] dialer enable-circular
[RouterA-Bri1/0] dialer-group 1
[RouterA-Bri1/0] dialer route ip 100.1.1.2 8810052
[RouterA-Bri1/0] dialer timer enable 15
2. Configure Router B:
# Configure a dial access control rule for dialer access group 2.
<RouterB> system-view
[RouterB] dialer-rule 2 ip permit
# Assign an IP address to interface BRI 1/0, and configure C-DCC parameters and the dial
string for placing calls to Router A.
[RouterB] interface bri 1/0
[RouterB-Bri1/0] ip address 100.1.1.2 255.255.255.0
[RouterB-Bri1/0] dialer enable-circular
[RouterB-Bri1/0] dialer-group 2
[RouterB-Bri1/0] dialer route ip 100.1.1.1 8810048
# Enable the local end to place return calls for ISDN calling number 8810048.
[RouterB-Bri1/0] dialer call-in 8810048 callback
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