Up to 4 DX100 base stations can be used together in the same location using BP200 beltpacks or W200 headsets. 
One base station must be designated as “primary” and all others must be designated as “secondary”. You can have only one primary and up to 3 secondary base stations. Secondary base stations are assigned numbers 1, 2, or 3.
• Label the base stations as “Primary,”  “1,”  “2”  and  “3.”
• Start with every base station and Beltpack/Headset power off.
Set DIP Switches
Open each secondary base station and set DIP switch #4 to the ON position as follows.
• Remove the six screws from the front panel of each secondary base station. Lift the front panel carefully and set it face down.  Be careful not to pull any wires loose.
• Locate the DIP switch on the transceiver circuit board inside the front panel of each secondary base station.  Set DIP switch #4 to the ON position. Leave #s 1 and 3 in the OFF position.  See picture below. 










• Replace the front panel and screws on the secondary base stations.
• The primary base station DIP switch #4 should be in the OFF position.