I don't have hardware at home (I know that shows my lack of committment
):
Can anyone confirm or deny whether System Mute also mutes CobraNet CAB outputs?
Hopefully the Dante-related changes in 1.6.4b will also have made this more certain, but I haven't tested it for myself.
If this does what it should, it's the easiest way to take a contact closure from a Fire panel and mute the whole audio system.
Thanks.

Hi Phil,
My understanding is that system mute does mute CABs:
http://peaveyoxford.com/kc/index.htm#9788
Others, please let me know if this is inaccurate and I will amend the docs.
Best regards,
Andy.

Hi,
I tested myself with a n6 (running 1.6.4b) and CAB16o:
System (and Unit) Mute causes audio to stop from both n6 (Nio8o) and CAB16o.
Watching Disco,
txReceivers
(n6) stays at 1, but
rxStatus
(CAB) goes to 0 when Mute is active.
As I get different CABs on the bench I'll check, but looks like your docs are good Andy!
Thanks.