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Grandstream

2 FXS Port Bridge | Grandstream HT812

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The Grandstream HT812 Powerful 2-port ATA with Gigabit NAT Router

This advanced 2-port analog telephone adapter (ATA) has 2 FXS ports and an integrated Gigabit NAT router. Built upon Grandstream's market-leading SIP ATA/gateway technology with millions of units successfully deployed worldwide, this powerful ATA features exceptional voice quality in various application environments, strong encryption with unique security certificate per unit, automated provisioning for volume deployment and device management, and outstanding network performance for home and office use.

  • Exceptional voice quality with wideband HD codec
  • Supports 2 SIP profiles and 2 FXS ports
  • Strong AES encryption with security certificate per unit
  • Supports T.38 Fax for reliable Faxover-IP
  • Automated & secure provisioning options using TR069
  • 3-way voice conferencing per port
  • Supports dual Gigabit network ports
  • High performance NAT router

Interfaces

  • Telephone Interfaces Two (2) FXS ports
  • Network Interfaces Two (2) 10/100/1000Mbps RJ45 ports
  • LED Indicators POWER, LAN, WAN, PHONE1, PHONE2
  • Factory Reset Button Yes

Voice, Fax, Modem

  • Telephony Features Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference
  • Voice Codecs G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726, iLBC, OPUS, dynamic jitter buffer, advanced line echo cancellation
  • Fax Over IP T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through
  • Short/Long Haul Ring Load 3 REN, up to 1km on 24AWG line
  • Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
  • Disconnect Methods Busy Tone, Polarity Reversal/Wink, Loop Current

Signaling

  • Network Protocols TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR-069
  • QoS Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS)
  • DTMF Method In-audio, RFC2833 and/or SIP INFO
  • Provisioning and Control HTTP, HTTPS, TELNET, TFTP, TR-069 , secure and automated provisioning using AES encryption, syslog

Security

  • Media SRTP
  • Control TLS/SIPS/HTTPS
  • Management Syslog support, telnet, remote management using web browser

Physical

  • Universal Power Supply Input: 100-240VAC, 50-60Hz Output: 12V/0.5A
  • Environmental
    • Operational: 32º – 104ºF or 0º – 40ºC
    • Storage: 14º – 140ºF or -10º – 60ºC
    • Humidity: 10 – 90% Non-condensing

Dimension and Weight

    • 28.5 x 130 x 90 mm (H x W x D)
    • Weight: 353.33g