MGCP D Channel Question

[CSCO12116446]

Hello, I have a MGCP set up between my VGW and CUCM. The link went down, so the PRI's D channel went down as well. After the connection reestablished, the D channel was still down, I was seeing TEI_Assigned. In order to bring it back up, I had to flap the PRI. By any chance is this the normal behaviour, is there a command to have it bring the D channel back up automatically?

Thanks,

Alain T

[George Thomas]

Sometimes MGCP could get finicky like this but could you paste the ccm-manager commands that you have on your gateway here?

[CSCO12116446]

2901TACOHOUSE# show run | i ccm-man
 isdn bind-l3 ccm-manager
ccm-manager fallback-mgcp 
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
ccm-manager config server 10.x.x.x 
2901TACOHOUSE#

[Niranjan Durairaj]

Hi Alain,

Could you collect "debug isdn q921"? Which IOS version you are using?

Thanks,

Niranjan

[CSCO12116446]

The issue is not occurring as we speak. But when I take down the link (btw cucm and the vgw) down again to do testing, I'll be sure to run this command. Let me know if there are other useful debugs you want me to run.

2901TACOHOUSE#sh ver
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.3(3)M, RELEASE SOFTWARE (fc2)