• Centrex Versus PBX
  A New Look at an Old Debate
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• IP-Centrex - Home
  
  IP-Centrex.org is an industry group defining business-oriented voice over packet services. This site was created by leaders in the telecommunications industry to share information about IP Centrex Voice over Packet (VoP/VoIP) service. IP Centrex can be described as feature-rich, interoperable, broadband IP Telephony.
  centrex ip-centrex lan multi-location multilocation over packet phone telephony voice voip vop
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