GOIP4,4 channels gsm voip gatewat/sip gateway

Specifications

Overview 

GOIP_4 is a 4 SIM Card Broadband Phone Gateway that had been developed by DBL Co. GOIP_4 SIM Card Broadband Phone Gateway is a new product that connect the GSM and the VOIP seamlessly. To GOIP_4 what is installed on the Mobile SIM Card, you can register the GSM telephone on the VOIP Softswitch.SIP and H.323 agreement are built in the GOIP_4 and configured flexible. Caller ID can be seen by using SIP. Flexible routing can meet the need of all kinds of call forwarding; even more special is that GOIP_4 support multi-device group, it can be easily combined into arbitrary number of channels of Large Gateway Group.

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 and comprehensive jitter buffer
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
 
Basic Features
LEDs 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
Retransmit GSM Caller ID to VoIP terminal
 

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
 

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
 

Application:

Saving Cost on International and Long Distance Calls,when you are in the other countries& you have this gateway at your Local office,you could dial & receive phone call from your customers as you are there without Long Distance fee.
Very excellent solution for internal company with branch offices oversea.

SKYLINE International Communication Co., ltd is a high-tech enterprise integrated with scientific research, development, production and sales. The company has been engaged in the research, development and production of communication products since its establishment. Our products are listed as follows.

 FXS series:HT-912(one fxs port),HT-922(two fxs ports),HT-842R(four fxs ports).HT-882(eight fxs ports)

 FXS+PSTN series:HT-812P(one fxs port with a PSTN live line),HT-822P(two fxs ports with a PSTN live line),HT-522(two fxs ports with two PSTN live lines),HT-544(four fxs ports with four PSTN live lines)

 FXO series:HT-322(two fxo ports),HT-342(four fxo ports)

 FXO+FXS series:HT-112(one fxo port and one fxs port),HT-222(two fxo ports and two fxs ports),HT-442(four fxo ports and four fxs ports)

 GSM&CDMA series:GoIP 1 (one channel), GoIP 4 (four channels), GoIP 8 (eight channels), CoIP 4 (four channels)

 RoIP series: RoIP302, RoIP302M, RoIP102

 IP Phone: EP-636 (one or two lines), EP-8201 (four lines)

 Recorder Box:TYH8200 (one line), TYH8201 (two lines), TYH636 (eight lines)

If you have any doubt or want to know further information,please feel free to contact me.