• IP-Centrex - IP Centrex Features
  IP Centrex Voice over Packet (VoP/VoIP) service supports a wide variety of calling features and call management capabilities.
  IP Centrex Voice over Packet (VoP/VoIP) service supports a wide variety of calling features and call management capabilities.
  centrex ip-centrex lan multi-location multilocation over packet phone telephony voice voip vop
  in TECHNICAL with centrex packet service supports technical voice voip vop

vop from all users