Hybertone GoIP4

Listing description

Name:used VoIP GSM Gateway;

Brand:DBL

Overview

H.323&SIP 2.0

Support IMEI change
Have encryption built-in
Support auto configurate sever
Can be customized.

Goip GSM 4 bridges the GSM and the IP networks by enabling voice communications.It is ideal for VOIP to Local termination where a fixed telephone line(pstn)is not available or for cellphone roaming via the a VOIP network Significant savings on long distance charges can be realized.

Key Features

1.Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)

2.Single or Multiple serve registrations

3.Two 10/100 Ethernet circults connect to the LAN and an additional device

4.GSM module for making GSM calls

5.Speech quality ensured by Qos at the Ethernet and IP layers and comprehensive jitter buffer

6.VLan and Qos Support

7.NAT Transversal and Router functions

8.Voice Prompts ,HTTP Web.Auto Provision support for configuration and updates

9.Highly stable embedded Linux operating system in high performance ARM 9 Processor

Basic Features

a.LEDs for Power,Ready,Status, WAN.PC.GSM

b.Call forward from GSM to VoIP and VoIP to GSM

c.Dial Plan

d.Password protection for both GSM dial in or dial out

e.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-left-shipping-cc-transfer-04 Session initiation Protocol Call Control-Transfer

Codec: G.711 (A/u law), G.729A/B, G.723.1

DTMF:RFC 2833.In-band DTMF, SIP INFO

Physical and Environmental

operating temperature:10oC to 40oC (50o F to 104o F)

Storage Temperature:0oC to 50oC (32o F to 122o F)

This equipment is located in ZA