4 ports fxs gateway sip voip phones

VoIP FXS Gateway HT-842R is a telephone extension to the IP network.It offers a traditional telephone line (PSTN) interface to an analog telephone,PBX line extension, or a fax machine.Its WAN port interface allows access to the IP network in order to offer voice and fax services.It is a great way for turning a traditional PBX to access the low cost VoIP services and for deploying VoIP service by an ISP.An additional Ethernet port allows broadband connection for the existing PC or other network device without buying additional network equipment. It is an ideal low cost product for SME and SOHO IP telephony application.

Product overview

4 FXS ports VOIP Gateway

Open Standard VoIP Protocols (SIP&H.323)

Provide 1 RJ-11 port for a POTS phone or a PBX's trunk line

Provide 2 RJ-45 Ethernet Ports

Support call forward/transfer/hold, phone book

Support G.711 A/μ law, G.729A/B, G.723.1 Codecs

Support QoS, NAT transversal and router function

Support VAD, CNG, EC

Highlights

Built-in H.323 V4 and SIP V2 Protocols.

Low cost

Hight performance router

Caller ID

Auto provisioning and firmware updates

Encryption transversal

Multiple languages

Key Features

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

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

Basic Feature

1 RJ-11 FXS port for traditional phone set or PBX's trunk line

LEDs for Power, Ready, Status, WAN, PC, FXS

Call Forward, Call Hold, Call Transfer Dial Plan

Caller ID

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

Free Software

Auto Config Server

Relay Server

Remote Access

Billing

Hardware Specifications

Operating temperature: 10°C to 40°C (50°F to 104°F)

Storage temperature: 0°C to 50°C (32°F to 122°F)

Size: 167mm (W) x 267mm (L) x 65mm (H)

Weight:0.56kg (Including AC/DC Adapter)

Power: 24V 500mA

Warranty: 1 year