ACR RAMP SUPVR CONCERNED WITH COMPANY AND IAD ARPT AUTH IMPLEMENTATION OF A DIGITAL COM SYS.

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AT IAD; IN THE RAMP TWR; THEY HAVE INSTALLED A DIGITAL COMS SYS TO PROVIDE PUSH CLRNCS FOR THOSE EQUIPPED WITH ACARS AND SUBSCRIBE TO THE SYS BUILT AND MAINTAINED BY COM RADIO IN ANAPOLIS; MD. WE HAVE HAD SEVERAL INCIDENTS WHEREBY ACFT HAVE PUSHED OFF A GATE OTHER THAN THE ONE THAT POPULATED IN THE SYS. I REQUESTED A PUSH CLRNC OFF GATE XX ON THE S SIDE OF THE TERMINAL. THE RAMP CTLR TOOK HIS 'MOUSE' AND CLICKED ON XX GATE ISSUING THE PUSH. THE ACFT PUSHED OFF ANOTHER GATE ON THE N SIDE. 2 DAYS LATER; WE HAD ANOTHER INCIDENT. THE SYS SHOWED THE ACFT TO BE AT XZ WHEN IN FACT HE WAS AT YZ; ABOUT 1/2 MI W OF XZ. 5 DAYS ALTER; WE HAD ANOTHER COMPANY ACFT PARKED ON ZX. WHEN THE CREW INITIATED A PUSH REQUEST; IT SHOWED ON XZ. THIS SYS HAS SOME VERY SERIOUS FLAWS IN IT AND COULD CAUSE A MAJOR ACCIDENT. IF FOR WHATEVER REASON THE COMPANY GATE CTLR PUTS THE WRONG GATE INFO INTO THEIR SYS; THEN ACFT ARE NOT GOING TO BE SHOWN ON THE CORRECT GATE. IT'S JUST A MATTER OF TIME THAT 2 OF THESE ACFT WILL GET TOGETHER USING THIS SYS. SILENT PUSHBACKS ARE DANGEROUS AND NOT SAFE. YOU NO LONGER HAVE THE OPTION OF LISTENING ON THE FREQ TO SEE WHAT'S HAPPENING. WITH ALL THE MOBILE LOUNGE MOVEMENTS GOING ON ON THIS RAMP AREA AND THE LACK OF WING WALKERS BY COMPANY; COMBINED WITH 'SILENT' PUSHBACKS IN THE EVENING BANK; THIS IS AN ACCIDENT WAITING TO HAPPEN. COMPANY UTILIZES THIS SYS AT DULLES. IT WAS BOUGHT BY THE AFT AUTH AND PUT ON LINE IN NOV/00. THE PURPOSE OF THE SYS WAS TO REDUCE FREQ CONGESTION ON THE RAMP AND TO GIVE THE FAA CTLRS AND ARPT AUTH RAMP CTLRS INFO ON GATES ASSIGNED FOR INBOUND ACFT AND FIRST DEP FIX INFO ON OUTBOUND. TFC.