Hi Neethan,
Please confirm the below points:
1. Check the incoming and outgoing is enabled at ISP side
2. Check the ISDN status on router
Use the following command to check the ISDN Status:
Router# show isdn status
3. Check the DSP resources on router
Use the following command to check the DSP resources:
Router# show diag
Router# show inventory
4. Check the current IOS for any bugs.
Use the following command to debug the ISDN calls:
Router# debug isdn q931
Please send the output of both the commands to find out the root cause of the issue (If possible the Router configuration as well).
-
Vaijanath
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Thanks, Vaijanath S.