16 gsm ports with 64 Sim Card.
VOIP Built in.Support SIP and Asteric
Imei Changer and Sim rotation
Best Voice quality
16 Port VoIP GSM Gateway / VoIP CDMA Gateway/VoIP UMTS Gateway with Imei changer GN-VG016 is a 16 channels VoIP GSM Gateway for call termination(VoIP to GSM and GSM to VoIP). It is SIP based and compatible with Asterisk. It can enable to make 16 calles simuitaneously from IP phone to GSM network and GSM network to IP phone. SIP (RFC3261) compliance Web Setting and Management IVR Voice configuration Built-in NAT/IP sharing function Basic PBX function (Private branch exchange) Concentrated Network Management Systems(NMS) Peer-to-Peer mode (non-Gatekeeper) Line hunting 16 RJ-11 FXS ports or 16 RJ-11 FXO ports E.164 (Telephone Number Plan) DTMF dialing PPPoE connection DTMF detection/generation FSK and DTMF Caller ID Remote configuration/reset via Telnet LAN interface : two RJ-45 connector of 10/100 Base-T Microsoft Netmeeting v3.0 compatible Support static IP and DHCP Built-in DHCP Server function QoS by ToS (Type Of Service) SNTP (Simple Network Time Protocol) Bell signal Polarity reversal Antenna socket (FME) IP usage switch Working state indicator Signal Strength indicatorFunction(1) Supply two set extension to connect(2) Incoming call display, and hide caller number(CID)(3) Set local code, IP access code and special number;(4) Set limiting to dial national long distance call mobile(5) Phone call and local call set using IP or not (6) Lock phone and telecom operator(7) Lock card automatically lock card with random PIN code or fixed PIN code .(8) 16 ports with 64 SIM, it can be switch automatic. (9) IMEI change(10) Following me function,GSM to VoIP and VoIP to