[asterisk-users] zap channel media volume

[JD Austin]

I've been fighting with this issue for over a year.
There are several threads here talking about it:
    Digium Zaptel volume issues
    setting of volume
    Low volume/audio problems on TDM400 card
    increase the volume ?

There is one thread (Voicemail volume adjustment) that give me hope that 
this can be fixed that mentions adding
|usg(10) to the dial command to increase the gain. 
I'm still a novice at the inner workings of asterisk so I'm hoping one 
of the gurus on the list will figure this out eventually.

JD
> Hi all,
>
> we do have the following configuration
>
> (non-Asterisk PBX) - T1 - ZAP (Asterisk PBX) - ZAP - T1 - (GSM 
> Gateway) -> GSM Enduser
>
> The call is originated on the (non-Asterisk PBX) - gets send over a T1 
> connection to the asterisk server (which does least cost routing) - 
> the asterisk server then does send the call over a GSM Gateway into 
> the world...
>
> The Problem we do have is - that the Users behind the non-Asterisk PBX 
> are complaining about low volume media if the the calling through the 
> gateway (if the are calling mobiles...). So i have started to raise 
> the rxgain value for the connection between the asterisk box and the 
> GSM Gateway, this does work quite well - but not really perfect. The 
> ringback (not locally generated - does come from the GSM Provider) 
> does get terrible loud - as soon as the callee is connected - the 
> speech is nearly not hearable because it has such a low volume.
>
> The ringback is EARLY MEDIA - if i am right - and the speech is normal 
> MEDIA. So, is it possible to set different gains for EARLY MEDIA and 
> normal MEDIA ?
>
> Does anyone else have had this problem ?
>
> regards,
> Wolfgang
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