Outgoing call volume issues


We have just had Trixbox installed up and we are very pleased with it’s performance except for one little niggle.
We have noticed people say they are struggling to hear us when making a call out their exact comment is that it sounds like “we are in a little box”. Is there anyway this can be adjusted? We hear them perfect it just seems when they hear us it is very faint. This system has no cards and is purely working on SIP.

Any advice and guidance is gratefully received.




What you sound like is down to the phone you are using and the codec to a lesser degree.

What phones are you using ?