MAKE CHEAPER LANDLINE TO CELL PHONE CALLS!!!
IT HOOKS UP TO THE PBX PHONE SYSTEM AND A SIM CARD IS INSERTED. THIS MEANS THE PHONE GETS A CELL NUMBER. THEREFORE WHEN THE LANDLINE IS ABOUT TO MAKE A CELL CALL IT BECOMES A CELL NUMBER CALLING ANOTHER CELL NUMBER.
GREAT FOR BUSINESSES BECAUSE THOSE MAKING ALOT OF CALLS THIS CAUSES THE PHONE BILLS TO BE CUT DOWN SIGNIFICANTLY.
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