[asterisk-users] different gains per channel?

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Hi all,

How do I set different rx and tx gains for each channel?
in my zapata.conf file I have a heading [trunkgroups] and then 
[channels] under this I have information such as language context 
signalling etc and also rxgain and txgain.
My assumption is that these settings are used for all channels (I have 
three zap channels).

I need to have different gain settings on each channel. Is this easy to 
achieve?

Many thanks
Kate