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Overview
The HT-544 is designed as a compact, high performance, and low cost VoIP Analog Terminal Adapter (FXS Gateway). It offers 4 FXS ports to interface with traditional analog phone sets or PBX trunk lines for VoIP communications. By connecting 4 PSTN line to the Bypass port, the phone sets connected to the FXS ports can also access traditional telephone service via the bypass port. The HT-544 is a full featured FXS gateway and is designed for easy installation and configuration. It is an ideal low cost solution for SME and SOHO environments where both VoIP and PSTN services are required.

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Key Features:
●Open Standard VoIP Protocols (ITU H. 323 V4 and IETF SIP V2)
●Single or Multiple Server Registrations
●Peer-to-Peer IP Calls
●Two 10/100 Ethernet for WAN / LAN connections
●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 
●4  RJ-11 FXS ports for traditional phone sets or PBX's trunk lines 
●4  RJ-11 port for connection to PSTN line (Bypass function only)
●LEDs for Power, Ready, Status, WAN, PC, FXS ports
●Call Forward, Call Hold, Call Transfer
●Dial Plan
●Caller ID

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