Ok. I also want to set my rxgain a little higher because some calls have low volume to the internal extension, but I think this will cause echo to come out more - is there anything I can do to work with that.
i turned off all oslec, but the echo on the calls was very bad, and that was with standard rx/txgains. I turned the oslec back on and calls sound clear, but the random scratchy calls still seem to be an issue which seems to happen on multiple trunks.