I was at a site with a strange problem. No matter what phone was the originator of a ic call. If the receiving phone was in hf mode, there would be clicking on the receiving phone. I call it motorboating, put put put.... Set the phones to tone. Thought I would see if anyone else had this issue. Customer didn't want to pay to change out the ksu to try to fix the problem. The systemn has been in for a year and everything was ok, until the service call. I tried different phones, but those phones, when they receive an ic call hf, will motorboat on the speaker.

Thanks in advance for any replies.

Mike