Dear Community members
One of our customers is running CUCM 11 and has VG202XM registered as MGCP gateway. All ports fot a status of "Registered" inside CUCM, however when users pick up handset of connected phone, they do not hear any dialtone. Outgoing calls are not working, but incoming do.
Please assist with troubleshooting of this issue.
Can you reset the MGCP gateway from cucm and do a no mgcp / mgcp on the gateway. If the problem persists please enable debug mgcp packets while recreating the issue and post it here along with gateway config.
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Thanks for your reply. Nothing was showing on these debugs. I think this is related to voltage as FXS cannot power idle the phone. Idle battery command is not found on the voice port. I changed firmware to the latest.
I actually opened case with TAC, they're asking for the same. But As I told before, this is due to voltage issue on the FXS port. Any ideas so far?
Please post the show tech/Show run from VG.Did you collected any debugs yet for this scenario ?
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Here are my thoughts; some of this you may have tried and some you may not have:
We opened the case with a cisco, they changed VG with another one. The thing is that we bot the same issue with another VG, but only when I am using MGCP. When I configure it as a SIP device, it seems to be ok with a dialtone, but here the call is failing from VG to CUCM with 403 message coming from CUCM. SIP trunk with VG IP address was added to cucm.