3Com 10014299 manual Configure Router a, Configure Router B

194CHAPTER 15: CONFIGURING ISDN PROTOCOL

II.Networking Diagram

Figure 57 Networking for ISDN DoV

8810152		8810148
BRI0	ISDN	BRI0
	Network
RouterA		RouterB

III.Configuration Procedure

1 Configure Router A:

[Router]dialer-rule 1 ip permit

[Router]interface bri 0

[Router-Bri0]ip address 100.1.1.1 255.255.255.0

[Router-Bri0]dialer-group 1

[Router-Bri0]dialer route ip 100.1.1.2 8810148

[Router-Bri0]dialer data2voice

2Configure Router B:

[Router]dialer-rule 1 ip permit

[Router]interface bri 0

[Router-Bri0]ip address 100.1.1.2 255.255.255.0

[Router-Bri0]dialer-group 1

[Router-Bri0]dialer route ip 100.1.1.1 8810152

[Router-Bri0]isdn voice2data

Fault Diagnosis and

Troubleshooting of

ISDN

Fault: Two routers are connected via an ISDN PRI line, but pinging the routers is not successful.

Troubleshooting:

1Execute the display isdn call-infocommand. If the system prompts “there is no isdn port”, it means that there is no ISDN PRI port, and you should configure one. For the configuration, refer to the section “cE1/PRI Interface and cT1/PRI Interface Configuration” in Operation Manual - Interface.

2If enabling Q.921 information debugging and debugging information “ISDN-D send data error” is output, it indicates that the physical layer is not activated. You can try to use the commands shutdown and undo shutdown to disable and re-enable the related interface.

3Check whether the dialer is configured correctly. If the dialer is configured correctly and no “ISDN-D send data error” is displayed, then it's possible the ISDN line is not connected well.