AP-N3-GSM8 GSM VoIP Module is a compact 8-Port GSM Module for GSM Call Termination Service. AP-N3-GSM8 GSM VoIP Module can be installed in our next generation AddPac GSM Gateway N1 Hardware Platform such as AP-GS4500. This GSM VoIP Module supports Quad-Band(850/900/1800/1900MHz) GSM frequency, Eight(8) SIM card Slots, Hot-Swap Switch Button, Two(2) GSM Antenna Interface. This GSM VoIP module include 4:1 Antenna Combiner(Power Divider) internally. Also this module supports the Voice DSP for GSM call termination service based on VoIP Technology.
AP-GS4500 GSM Gateways are the-state-of-the art multichannel gsm gateway device based on voice DSP/GSM chips which allow to install ten(10) GSM module slots. AddPac GSM gateway is a device that can support both GSM gateway service (Digital E1/T1->GSM or Internet->GSM) and VoIP gateway service (Digital E1/T1->Internet) simultaneously. It also supports SIP, H.323 Multiple VoIP signaling protocol, various voice codec(G.711, G.726, G.729, G723.1).