32 Ports 32 Sim Cards Gdm Voip Gateway With Imei Changer

These 32 Ports 32 Sim Cards GDM VOIP Gateway with Imei Changer is a 32 channels GSM VoIP Gateway (GoIP Gateway) for call termination(VoIP to GSM and GSM to VoIP). It is SIP based and compatible with Asterisk. It can enable to make 32 calles simuitaneously from IP phone to GSM network and GSM network to IP phone.
Main Functions:
(1) VoIP(SIP),GSM/UMTS conversion.
(2) Following me function.
(3) For call termination(VoIP to GSM) and origination(VoIP to GSM).
(4) Web Setting and Management.
(5) IMEI changeable.
(6) Supply two set extension to connect .
(7) Incoming call display, and hide caller number(CLI) .
Specification:
Protocols:H.323(optional),SIP (RFC3261) compliance
Codec:G.711u-Law ,G.711a-Law,G.723(5.3k),G.723(6.3k),G.729AG
TCP/IP:IP/TCP/UDP/RTP/RTCP/CMP/ARP/RARP/SNTP DHCP
Frequancy: Quan band850/900/1800/1900Mhz
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
32 RJ-11 FXS ports or 32 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