atcomsystems.ca/forum Forums TDM Business Telephone Systems Comdial Telephones & Systems DXP night ring

I'm working on a DXP and small office for dxp.
There is a phone set up in a store with direct ring on line 12 and when in night ring it rings 4 times and goes to VM. when night ring is off , it rings once and goes to vm. Any thoughts,, ???I need it to ring at least 5 times so they can get the phone. Thanks Guymon BarkeR ,Barker Security, LLC.