4. Overview of VoIP Technology Gateways A VoIP gateway can be loosely defined as a mechanism that takes circuit-switched voice from a traditional PBX, converts it to IP and transfers it across a LAN or WAN to another gateway where it is reconstituted back into a format that is understood by the receiving phone system. Gateway functionality can be obtained through stand-alone boxes, modules or chassis cards for proprietary boxes; also Westmoreland 56k , Westmoreland, NH 56k WestmorelandWestmoreland , 56k New Hampshire, Westmoreland 56k
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