3G Smart Phone and Radio Device Network Interwork Group Call (PTT over IP) Total Solution
AddPac Technology PTT over IP solution is a PTT group call service total solution which can be used under various wire/wireless environments such as 3G smart phone (mVoIP) and existing radio device network.
SIP based AddPac group call solution is composed of IPNext3000, AP-PTS3000PTT server, LMR(Land-to-Mobile Radio) Gateways, WiFi IP Phone, Android based smart phone SIP PTT application, PTT IP phone, and network management system NMS (Network Management System).
AddPac group call solution is designed on the basis of IP network to support 1:1 and group call service in any places. It allows saving communication costs with VoIP technology. The main advantage of this device is that it supports radio device network function so that user can maintain existing radio device network system and merits. It also supports group call service by expanding the radio device network coverage to nationwide 3G network.
It is designed to expand wire/wireless PTT service users by increasing the number of PTT server. Particularly, Android smart application supports 3G (mVoIP), and Wifi dual mode. It uses the verified standard signal system so that it has both excellent compatibility and scalability.