Q. What is the difference between IMX & Premier ESP?
A. Nothing, they are exactly the same
Q. What Does "Turbo" phone mean?
A. The Turbo phone has an A/B switch underneath. They are used on some of the larger systems and can have two phones attached to one station port. (One set to A and the other set to B) This requires certain large systems with special cards to use the A/B feature but they will work on any system by itself that can handle EVT phones.
Q. What is the difference between "Regular" & "EVT" Phones?
A. The main difference between Regular and EVT phones is the volume control. The Regular ESP phones have two volume wheels on the right side. The EVT phones have a volume up and volume down buttons just under the IC and MSG buttons. EVT phones are newer and require a certain software level in your phone system so do not buy them unless you have some already or know they will work.
Q. Why is my phone volume transmitting low or not at all?