Avaya 2330/4134 Troubleshooting Manual page 350

Troubleshooting a SIP Media Gateway problem
Figure 92: show sip-ua calls sample output
The output confirms that an existing call is in progress on the destination.
ISDN PRI link down
The following figure shows a sample output for the debug voice cc routing command
in which the Returning CC 503 message indicates that a PRI T1 link is down.
Figure 93: debug voice cc routing sample output
To display the T1 module status, enter the show module configuration t1 command.
The following figure shows that alarms have been detected on the module.
350 Troubleshooting
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August 2013