[cisco-voip] VG224 buzzing/humming on incoming calls only

[MILLS, Mark]

Hi All,

I was hoping I might be able to get some help with the setup of a VG224 that I am doing.  It is connected to CCM6 cluster.  I can place calls FROM the analog phones connected to the ports, and it all works properly with two way audio.

When making calls TO the analog lines on the VG224, the calling party simply hears a loud buzzing/humming noise and nothing else.  The analog user can hear nothing.

This happens for incoming PSTN calls and calls to other extensions to the VG224 connected devices.

I have not setup a VG224 for incoming calls before, so there is obviously something I have missed.  Below is the relevant config parts on the device.  Any help is appreciated!



stcapp ccm-group 1
stcapp
!
voice-port 2/0
 ren 3
 idle-voltage low
 disc_pi_off
 input gain 10
 output attenuation 10
 playout-delay minimum low
 cptone AU
 timing digit 53
 bearer-cap Speech
 station-id number XXXXXXXXXX
 caller-id enable
!
sccp local FastEthernet0/0
sccp ccm 10.194.3.10 identifier 20 version 4.1 
sccp ccm 10.194.4.10 identifier 10 version 4.1 
sccp      
!
sccp ccm group 1
 associate ccm 10 priority 1
 associate ccm 20 priority 2
 switchback method graceful
!
dial-peer voice XXXXXXXXXX pots
 service stcapp
 port 2/23
!

Cheers,
   Mark
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