Keep in mind before going with flash:

-Amount of lines on the KSU
-If the carrier is supplying "Call Transfer" so that the call is transferred off of the KSU.
-Channels , 1 ch per user
-Expected call volume


Flash 2 or 4 ch (1 or 2 ports)
CP 100 4 Ch (2 ports)
CP150 8 Ch (4 ports)
BCM50 16 built in channels



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