Just a heads up. Just found out the hard way that what Vodavi refers to a "Silent Recording" is not silent. When the silence timer expires the voice mail starts talking to the parties in conference, not like Panasonic and others that just stop. Vodavi says that this is how it should work.
Thats the last one of these units, and this one gets yanked to change to Panasonic.
Live and learn!!!!

Are you refering to the one touch record feature (649-440)?

I know about that too. And yes, that is the way Vodavi works it. If you were using the one touch recording button and someone hits a touch tone, the voice mail system reacts as though it's looking for input and starts acting on it. It won't stay silent.

It does this because the voicemail system receives inband to start recording. If there are timers in the voicemail, it will time out. If the vm is set to say something after the time out, it will. In effect it puts a voicemail port on as a conference party to your conversation.

Yes- one touch record.
In the VM pgm scree its is silent record.
Yes I know its a conf, Panasonic works same way except, if the silence timer expires it just drops off!!