Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
What problem do you have with your CO Line ?
Do Not Disturb, as to activation, seems to not be capable of quite what you ask, not on a Vodavi Starplus STS system.
One: the Vodavi system can be programmed to give each phone station a DND button.
Then, the Do Not Disturb function must be activated by pressing that button on the station.
(If no DND button is programmed, you simply activate DND for the phone station by dialing
and then dial 631 again later, to turn ringing back on again and disable DND mode for that phone station.)
Perhaps some other mode would be your preference, if you just want the ringers on all the phones to stop for the night and start up again automatically in the morning. ?
(If this answers your question, please rate my answer. Thanks.)
I don't know if this system has that capability for certain...but, lines can be assigned to ring only during the day.
Would that be a good enough arrangement?
Would you be interested in having the switch to no-ring mode done manually each time on each phone station? or would you rather it be done manually only once, and automatically thereafter ?