Specifications

Description

Detailed Product Description
4 Channel GSM VoIP Gateway for 4 SIM Card
Support IMEI Change and VPN
850/900/18001900MHZ
SIP & H.323
Send SMS quickly

Basic FeaturesLEDs for Power, Ready, Status, WAN, PC, GSM 
Call forward from GSM to VoIP and VoIP to GSM 
Dial in mode or dial out mode only 
Dial Plan 
Password protection for both GSM dial in or dial out 
IMEI Change
Retransmit GSM Caller ID to VoIP terminal 
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)
RFC 3891 – SIP “Replaces” Header 
RFC 3892 – SIP Referred-By Mechanism 
draft-ietf-sipping-cc-transfer-04 –  Session Initiation Protocol Call Control
Codec: G.711 (A/µ law), G.729A/B, G.723.1 
Key Features Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2) 
Single or Multiple Server Registrations 
Two 10/100 Ethernet circuits connect to the LAN and an additional device 
GSM module for making GSM calls 
Speech quality ensured by QoS at the Ethernet and IP layers 
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 Processo
Enhanced FeaturesDynamic 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 
CDMA/GSM
Multi-language support: English and Chinese 


Terms

FOB Price: US $ 430-490/ Piece
Minimum Order: 1 Piece/Pieces
Port: Hongkong or Shenzhen
Payment Terms: T/T,Western Union,PayPal

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