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MGCP taking down BRI layer 2

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AuditSimon

IS-IT--Management
Apr 12, 2007
32
GB
We're experiencing a really weird problem with a 2821 voice gateway running 12.4.11T1 and a VIC2-2BRI.

A Q921 debug is running fine, until we add the "isdn bind-l3 ccm-manager service mgcp" command on the BRI interface. As soon as it's added, the Q921 debug stops, and we get a Layer 2 status of "NOT Activated"

Remove the isdn bind-l3 command and the Q921 debugs return.

A show ccm-manager is showing that the gateway is registered with our Call Manager 4.1(3), but when you look on the Call Manager, the gateway is showing as unregistered.

Anyone experienced this before, or got any ideas ?
 
You are either missing something on your config or an MGCP bug. Probably the latter. Try upgrading to 12.4.15T or even higher like 22T
 
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