FXS Gateways 2FXS Port VoIP Gateways ATAs FXS VoIP Communications HT-922

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 Guaranteed 100% FXS Gateways 2FXS Port VoIP Gateways ATAs FXS VoIP Communications HT-922

 

The HT-922 is designed as a compact, high performance, and low cost VoIP Analog Terminal Adapter (FXS Gateway). It offers two FXS ports to interface with traditional analog phones or PBX trunk lines for VoIP communications.  It bundles with lots of features to meet the demand in various network environment.  It is an ideal low cost VoIP solution for travelers, SOHO and SME users.

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 Features

Two RJ-11 FXS ports 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

Physical and Environmental

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

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

Weight:   1.9 kg (4.2 lb) (Including AC/DC Adapter)

Size:    mm (W) x    mm (L) x    mm (H) (   x     x     )

Power: 24 Vdc 500 mA  (AC/DC adapter included). Classification 0 under IEEE 802.3af on CN2x4

Safety:

Emissions:

Immunity:

Other Approval:

Warranty: one year

 

Packaging Details

Unit Type: piece

Package Weight: 0.5kg (1.10lb.)

Package Size: 25cm x 18cm x 8cm (9.84in x 7.09in x 3.15in)

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