The GSM/CDMA VoIP Gateway is a multi-functional product used to effectively implement the smooth transition between PLMN (GSM/CDMA) and VoIP network. The GSM/CDMA VoIP gateway is designed for comfort, ease-of-use to satisfied necessary of customers. It is not only inherits tradition of quality voice communication over IP network but reduce the human resource of VoIP network deployment. It’s a cost-effective gateway for call termination (VoIP to GSM/CDMA) and origination (GSM/CDMA to VoIP). It is fully compatible with leading Soft switch and SIP servers.   1/4/8 GSM/CDMA Channels Optional Up to 8 concurrent calls GSM: Quad band 900/1800/850/1900MHz CDMA: 450/800/1900MHz IMEI and PIN changeable Support SMS sending/receiving Support USSD, Open API for SMS Flexible dial plan, digit map   Features: •Point to Point Protocol over Ethernet (PPPoE) Client Support Built-in PPPoE client for establishing a DSL link connection with the ISP.There is no need to install a further PPPoE driver on computers. •Smart QoS It provides smart QoS feature to provide stable voice quality while users access internet from private LAN to internet at the same time. •VoIP to GSM/CDMA cal termination It allows up to 8 concurrent calls, terminate calls from VoIP to GSM/CDMA network. •Origination: GSM/CDMA to VoIP Maximum 8 concurrent calls for each unit, calls from GSM/CDMA network over VoIP. •Fully compatibility Flexible choice, worldwide GSM/CDMA network usable. •SMS supported SMS sending and receiving provides open API interface for third party to develop their own business. •Management & maintenance Remote SMS recharge, Hot plug SIM cards, SIM cards ’PIN protection, easy to maintenance •Flexible number manipulation Support 32 number manipulation rules, replace the call prefix and send calls to different ports and port groups •Route management More then 2 soft switch /SIP server send calls to GSM VoIP Gateway white black IP list management.   Technical Specifications: Physical Interfaces •1/4/8 GSM/CDMA channels  •VJ-04GV/VJ-08GV: 1 WAN, 3 LAN ports  •VJ-01GV: 1WAN, 1LAN ports  •Signal strength indicator VoIP Specifications •MGCP: with ISP bypass feature (optional)   SIP signaling  •RFC3261 SIPv2.0  •Support User ID and Password Authentication  •Peer to Peer SIP proxy call   Voice Codec  •G.711, G.723.1, G.729ab  •Coding: A-law, μ-law  •Enhanced (Carrier Grade) Echo Cancellation: ITU Rec. G 168, up to 128 ms tail size   FAX over IP(coming soon)  •Using industry standard T.38, up to 14.4kbps  •Pass-through Network Features • Penetrate NAT/Firewall  •Support TCP/UDP, RTP/RTCP, HTTP, ARP/RARP, DNS, NTP, TFTP, TELNET, PPPoE, STUN  •Static IP Configure.  •PPPoEDialup  •DHCP client Call Features •Adaptive Voice Activity Detection (VAD) with Comfort Noise Generation (CNG)  •Adaptive Jitter Buffer  •Packet Loss Concealment  •DTMF Signaling via RFC 2833 or SIP Info  •Auto dial for speed  •Adjustable Gain of port: -6db~+6db GSM/CDMA Features •GSM: Quad-band 850/900/1800/1900MHz  •CDMA: 450/1900/800MHz  •SMS sending and receiving  •Support PIN code protection  •Monitor SIM cards status through WEB  •Hot plug SIM cards  •IMEI and PIN modified  •Open SMS API interface, USSD  •Talk duration restriction  •Hide telephone number of SIM card  •Reject incoming calls Configuration and Management •Software update online automatically.  •Web, Telnet configuration  •Support Language: English, Simplified Chinese  •Firmware upgrading by TFTP/FTP  •Customize IVR file upload  •Administrator, Telnet password modification  •Monitoring: SIM cards state, VoIP account register status  •Central management Compatibility •Fully compatible with mainstream venders, such as HUAWEI softX3000, elastix, trixbox,voipswitch, etc.  •Compatible with other standard Softswitchand SIP server General specifications •Power supply: VJ-01GV: AC100~240V DC12V/1A, 50/60HZ VJ-04GV/VJ-08GV: AC100~240V , 50/60HZ  •Temperature: 0°C~40°C (Operation) -20～80°C (storage)  •Humidity: up to 90% non-condensing