Is there a code to turn off the intrusion tone on a voice call. I heard there was a code you could use from the called station but I cant find where I wrote it down. I never did try it. thanks

The tone is played when a voice call is performed so the callee would no they are not spied on.
The callee however can press the handsfree key once during the call to acknowledge the voice call.

Handy for baby monitoring too.

Thanks Curly that's what I needed.