This project aim to virtual telecom carriers, provide convenient and competitive IP voice service at place where population is centralized such as school, factory traffic center etc. It can realize smooth transition and do not need to change current network if new IP Phone business addresses will be added in the future.

Set a Aliwei EID3000 series digital gateway in Virtual Carrier's Center equipments room, connect E1 port with PSTN networking, as the trunk gateway of each IP supermarket. Each sales outlets use Aliwei EIA20X series (provide 2-32 ports or more according the need) as access gateway. Business billing in IP Phone bussiness address using Aliwei gateway billing software, management billing to each IP Phone business address in center equipments romm use GK billing system

Central equipments room equip GK, calling mange based on H.323 to IP voice equipments of whole network. If the trunk gateways in central equipments room are not enough, add the quantity of trunk gateway. Made all trunk gateways realize load equilibria through GK.