Specifications

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Chapter 5 Configuring ISDN
Dial-In ISDN BRI Pool
The following debug commands are helpful in troubleshooting an ISDN leased
line. Follow these commands with the ping command to display debug output.
• debug ppp negotiation
• debug isdn events
• debug q931
• debug q921
Dial-In ISDN BRI Pool
This section describes how to configure a Cisco router with two ISDN BRI
interfaces to function as a dial-in server. In this example, the Cisco router
functions as the central-site router that accepts dial-in connections from remote
routers.
These are the major tasks in configuring your router for dial-in ISDN connections:
• Configuring Global Parameters
• Configuring Security
• Configuring the Fast Ethernet Interface
• Configuring the ISDN Interfaces
• Configuring a Dialer Interface
• Configuring EIGRP Routing
• Configuring IP Static Routes and Dial-In Parameters
• Configuring Command-Line Access to the Router
Figure 5-4 shows the configuration example used in this section.