Product Details

Specifications

16 port gsm voip gateway,goip 16
1,gsm voip gateway for call termination
2,support imei change
3,support sending SMS & USSD

1/4/8/16 ports gsm voip gateway,16 goip

VoIP GSM Gateway GoIP bridges the GSM and the IP networks by enabling voice communications. It is installed on the Mobile SIM Card, you can register the GSM telephone on the VoIP Softswitch.it can be easily combined into arbitrary number of channels of Large Gateway Group. Low price, perfect sound quality and powerful function make GoIP GSM inevitable choice of system Integrators, traffic Business and soft switch Manufacturers. 16 goip
Key Features	Open Standard VoIP Protocols (SIP&H.323)
	Single or Multiple Server Registrations
	Two 10/100 Ethernet for WAN / LAN connections
	Peer-to-Peer IP Calls
	Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer
	Line Echo Cancellation
	VLAN and QoS support
	NAT Transversal and Router functions
	Voice prompts, HTTP Web, Auto Provision support for configuration and updates
	Highly stable embedded Linux operating system in high performance ARM 9 Processor
16 goip
Basic Features	LEDs for Power, Ready, Status, WAN, PC, FXS
	Dial in mode or dial out mode only
	Call forward from GSM to VoIP and VoIP to GSM
	Dial Plan
	Retransmit GSM Caller ID to VoIP terminal
16 goip
Enhanced Features	Dynamic selection of codec
	Advanced jitter buffer
	Automatic traversal of NAT and firewall
	VLAN / Qos
	Router
	Echo cancellation for Speakerphone
	Comfort noise generation (CNG)
	Voice activity detection (VAD)
	Auto provisioning (requires auto provisioning server)
	On line firmware upgrade
	Multi-language support: English and Chinese
16 goip
Supported Standards	ITU: H.323 V4, H.225, H.235, H.245, H.450
	RFC 1889 - RTP/RTCP
	RFC 2327 -SDP
	RFC 2833 - RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
	RFC 2976 - SIP INFO Method
	RFC 3261 - SIP
	RFC 3264 - Offer/Answer model with SDP
	RFC 3515 - SIP REFER Method
	RFC 3842 - A Message Summary and Message Waiting Indicator
	RFC 3489 - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
	RFC 3891 - SIP "Replaces" Header
	RFC 3892 - SIP Referred-By Mechanism
	draft-ietf-sipping-cc-transfer-04 - Session Initiation Protocol Call Control Transfer
	Codec: G.711 (A/µ law), G.729A/B, G.723.1
	DTMF: RFC 2833, In-band DTMF, SIP INFO
	Operating temperature: 10°C to 40°C (50°F to 104°F)
16 goip
Physical and Environmental		Storage temperature: 0°C to 50°C (32°F to 122°F)
		Power: 12 VDC 2A (110V-220V) (AC/DC adapter included)
		Warranty: one year

Model of GSM VoIP Gateway

We have 1, 4, 8, 16 ports GSM VoIP Gateway. there are 7 models.
GoIP-1 ( supporting one SIM card ), GoIP-1i ( supporting 1SIM card, built-in antenna)
GoIP-4( supporting 4 SIM cards ), GoIP-4i ( supporting 4 SIM cards, built-in antenna)

GoIP-8( supporting 8 SIM cards ), GoIP-8i ( supporting 8 SIM cards, built-in antenna)
model 7: GoIP-16 (supporting 16 SIM cards)