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

[Kevin Dunn]

I just had this happen with a VG248.  Same exact issue, turned out the
analog lines had been victims of some lightning, the Telco replaced teh
facilities for the analog lines and the crackling went away... Hope that
helps.

On 10/11/07, MILLS, Mark <mark.mills at baesystems.com> wrote:
>
>  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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