I currently have a DX90 Telecon system, and having audio issues with the mute button. The issue is that when I press the mute button, it mutes the other side, but when I unmute, it is still muted for them. This last time I was in a call, I didnt even press the mute buttom and the other end said my "Far Fetched Microphone was shut off".
If anyone has any idea whats going on, I would glady appreciate the help.
Can you please double check the model of the device you are using, there is no "DX90" - there are DX70, DX80 and EX90.
Also, if you let us know what software version it is running (TC7.x? CE8.x? CE9.x? Something earlier?) and what Call Control platform (VCS, CUCM, Standalone) you are using, that may assist us to help pinpoint where your issue may be.
Wayne -- Please remember to rate responses and to mark your question as answered if appropriate.