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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter 5 Maintenance
Troubleshooting
Async Calls
Symptom
•
Async user gets fast busy.
Possible Cause
•
ISDN PRI layer 2 is not up/channel busied out.
• ISDN incoming-voice mode not configured.
• Modem can not be allocated (busied out, firmware download in progress).
• DNIS screening is enabled and access-rejected.
• ISDN switch-type reconfigured, NAS needs reload.
Symptom
•
Some users can connect but some can not.
Possible Cause
•
Incorrect password/modem problem.
• Dialer caller xxxxxxxxxx configured and user does not deliver caller-id.
• Telco provision problem.
Symptom
•
Async user modem will not train-up or connect at low speed and retrains often.
Possible Cause
•
Check for slip seconds on the T1 controller.
• Check for A/u-law, modemcap.
• Check for client modem firmware version.
• Check for client modem compatibility issues.
Interactive Async User
Symptom
•
Interactive Async user does not get Username Prompt.
Possible Cause
•
Need to hit return after connect.
• Async-mode interactive not configured.
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