AP-N1-GSM4UI GSM VoIP Module is a new 4-Port GSM Module for GSM Call Termination Service. AP-N1-GSM4UI GSM VoIP Module can be installed in our next generation AddPac GSM Gateway N1 Hardware Platform such as AP-GS2500, AP-GS2000, AP-GS1500, AP-GS916, etc. This GSM VoIP Module supports Quad-Band(850/900/1800/1900MHz) GSM frequency, Four(4) SIM card Slots, Hot-Swap Switch Button, Four(4) GSM Antenna Interface. This module is a little bit cost-effective solution compare with GSM module having power divider internally.
Also this module supports the Voice DSP for GSM call termination service based on VoIP Technology. This GSM Module is suitable for small GSM gateway. For example, under 16-Port GSM interface device, this GSM module is valuable because too many antenna interface and cable is difficult to manage GSM gateway.