[Asterisk-Users] txgain for SIP?

[Christoph Eicke]

Is there an option txgain for SIP in Asterisk? My users all complain that 
their other parties think that they are way too silent even though they all 
have their mic volume all the way up and also enabled the 'mic boost' option. 
This happens with all the clients that we're using and also with different 
model headsets, so my last hope is txgain for SIP.

Thanks
Christoph