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122 Chapter 5: Configuring PPP and Controlling Network Access
Scenario 5-3 Answers
1
The symptom listed here is consistent with authentication failure. Show dialer or debug
ppp authentication assists in troubleshooting the condition.
2
A callback failure of this sort can sometimes be attributed to busy B channels. If a callback
request comes in and authentication is successful, the server disconnects the call. If this is
the last available B channel, and a new call comes in, the new call takes the available B
channel and callback cannot occur.