HT522,2 fxs+ 2 pstn fxs VoIP Gateway/ pstn bypass gateway

Specifications

Overview

The 2-FXS Port with 2- PSTN Bypass Port VoIP Gateway (HT-522) is designed as a compact, high performance, and low cost VoIP Analog Terminal Adapter (FXS Gateway).  It comes with one FXS port to interface with a traditional analog phone set or a PBX trunk line for VoIP communications. By connecting a PSTN line to the Bypass port, the phone set connected to the FXS port can also access the PSTN line for traditional telephone service. The HT-522 is a full featured FXS gateway and is designed for easy installation and configuration. It is an ideal low cost solution for travelers and SOHO users.

Basic Features
Two RJ-11 FXS port for traditional phone set or PBX's trunk line
Two RJ-11 port for connection to PSTN line (Bypass function only)
LEDs for Power, Ready, Status, WAN, PC, FXS
Call Forward, Call Hold, Call Transfer
Dial Plan
Caller ID
Dynamic selection of codec
 

Enhanced Features

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.