Does anyone have the solution for this. I have a T100P going to a channel bank for all internal extensions. Calls from one internal to another sounds prefect. When placing a outbound call (going out over X100P) there is a very slight echo, almost like the comfort noise is delated by a fraction of a second. Its just a little annoyong, but when moving papers on my desk, it is very noticeable. I turned echo cancellation on for channels 25-26 (X100P), but that doesn't seem to do it. Does the gain affect this in any way? Would a faster computer help? Right now it is running on a 433Mhz celeron. Thanks everyone, Mike