VoiceFinder AP-GS3000 now comes with GSM Multi-SIM VoIP Modules installed.
This GSM Multi-SIM VoIP Modules, AP-N1-GSM4S8 GSM VoIP Module, is a new 4-Port GSM Module (8 SIM card slots per GSM Port) for GSM Call Termination Service. This GSM VoIP Module supports Quad-Band (850/900/1800/1900MHz) GSM frequency, Eight(8) SIM card slots per GSM port, Hot-Swap Switch Button, One(1) GSM Antenna Interface. This GSM module has thirty-two (32) GSM SIM card slots internally. Also this module supports the Voice DSP for GSM call termination service based on VoIP Technology.