Delivery Time:3-5 workdays

NAT Transversal PPTP VPN VoIP FXS Gateway Protocol SIP & H.323

Quick detail:

Brand name: DBL Model Number:HT-842R type: VoIP FXS Gateway Ports: 4 Color: black Protocol: SIP & H.323 Support: P2P calls, VPN. NAT Transversal
 

Description:

The 4-line FXS gateway is designed as a compact ,high performance and cost-efficient VoIP Analog Termianl Adapter. The HT-842R is a full featured FXS Gateway and is designed for easy installation and configuration.It comes with one Ethernet port for network access to a VoIP Server and Four RJ-11 jack to interface with a traditional telephone or fax machine. Connecting a telephone line port (FXO) of a traditional PBX to a VoIP ATA enables the PBX to take full advantages of VoIP services. Its high performance offers toll quality voice,flexible networking feature-rich call functions.It is an ideal solution for SME, SOHO, and individual who would like to lower or eliminate their local and long distance call charges.

Key Features

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

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

Point-to-point protocol over Ethernet (PPPoE);

Hypertext Transfer Protocol (HTTP);

Dynamic Host Configuration Protocol (DHCP);

Domain Name System (DNS);

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

Dynamic selection of codec

Flexible jitter buffer

Automatic traversal of NAT and firewall

VLAN / QoS

Comfort noise generation (CNG)

Voice activity detection (VAD)

Auto provisioning (requires auto provisioning server)

Password protection for both GSM dial in or dial out

Basic Function

PLC: Packet loss concealment 

Voice gain adjustable

Echo Cancellation (with ITU-T G.168/165 standard)

Hotline

Memory Dial

Caller ID

Dial Plan

Online firmware upgrade

Multi-language support: English and Chinese

With Accounting Function

Applications:

1.

P2P Calls

Specifications:

Hardware	Parameters	Remark
Model	HT-842R
Processor	ARM9 300MHZ
DSP	ARM926EJ DSP(media sub system)
RAM	16M
FLASH	4M
Network Card	100/10BASE-T ×2
LED	operating and circuit light
Power consumption	24V/DC
Net Weight	0.24kg
Operating Temperature	0－45℃
Working Humidity	40％－90％ non-condensation
Color	grey
RJ11 port	4
Speech Characteristics	Service Condition	Remark
G.168 Echo cancellation	support	16mS
g.723	support
g.711A/u	support
g.729A/B	support