The HT-882 VoIP gateway is designed as a compact, high performance, and low cost VoIP Analog Terminal Adaptor (FXS Gateway).It comes with 8 FXS ports to interface with traditional analog phone sets or PBX trunk lines for VoIP communications.The HT-882 is a full featured FXS gateway and is designed for easy installation and configuration .It supports the two most widely used Open VoIP Standards (SIP and H.323).This allows the HT-882 to interoperate seamlessly with softswitches or IP PBXs made by various vendors.Its high performance offers toll quality voice, flexible networking, and feature-rich call functions.It is an ideal low cost solution for SME environment where multiple lines are required.
Key Features - Static IP support
- Switch mold support
- support DHCP,PPPOE
- 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
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Basic Features - Eight 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
- 3 times re-password
- Billing support
- Keyboard setting
- IP voice enrollment
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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
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Supported Standards - ITU: H.323 V4, H.225, H.235, H.245, H.450
- RFC 1889 RTP/RTCP
- RFC 2327 SDP
- RFC 2833RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
- RFC 2976SIP INFO Method
- RFC 3261 SIP
- RFC 3264 Offer/Answer model with SDP
- RFC 3515 SIP REFER Method
- RFC 3842A Message Summary and Message Waiting Indicator
- RFC 3489Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
- RFC 3891SIP "Replaces" Header
- RFC 3892SIP 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
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Hardware Specifications - Processor: ARM9E 133MHz
- DSP: VPDSP101 95MHz
- Memory: RAM 16MB/ Flash 4MB
- Power: Input AC100V ~ 240V, output 24VDC / 300mA
- Power consumption: 12W maximum
- Network card: 100/10Base-T x2
- LED: Operation and lines light
- RJ11:eight 24V feed 48V ring
- Operating temperature: 10°C to 40°C (32°F to 104°F)
- Storage temperature: 0°C to 50°C (32°F to 122°F)
- Working Humidity: 40% ~ 90% Not congealed
- Weight: 640 g (1 lb) (Including AC/DC Adapter)
- Warranty: one year
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