You are correct with the PTT , kind of
A few of things I've learned. on my SVTC
1. Rider must use PPT to talk with the passenger, release the button and com stops, HOWEVER for the passenger, press the PPT once, intercom is open and stays open until the PPT is pressed again by the passenger to turn off.
2. Turn on VOX, intercom is activated when you speak into the mic for both rider and passenger.
3. Now the problem. If intercom and CB are both turned on, any intercom conversation will be broadcast over the CB... bad very bad..
I called Yamaha and informed them that the intercom should be independent of the CB as it was so with the Gen2. especially in a group ride scenario.
I can't have my CEO yelling at me and have everyone with a CB hear it..lol..
4. JM Elite headsets are compatible, however the Gen2 5 pin lower cable kind of works. Gen3 uses a 8pin lower cable , see the accessories page for this cable
I'm still playing around with the infotainment system, so any other bugs I find I will post hear.
Hope this helps .
As for the Venture in general, this is one awesome machine.