4 Channel VoIP ATA Telephone Adapter WAN / LAN For Free Call

Quick Details

• Place of origin: Guangdong, China
• Brand name: DBL
• Model Number:HT-842R
• Protocol: SIP & H.323
• Support: P2P calls, PPTP VPN. NAT Transversal

Description:

The Adapter 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

• One 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
• 

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