Description
The Grandstream HT812 is an advanced 2-port analog telephone adapter (ATA) with 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.
Grandstream HT812 Key Features
- Supports 2 SIP profiles through 2 FXS ports and dual Gigabit ports
- Includes a built-in NAT router which can handle routing speeds up to 100MBps
- TLS and SRTP security encryption technology to protect calls and accounts
- Automated provisioning options include TR-069 and XML config files
- Supports 3-way voice conferencing
- Failover SIP server automatically switches to secondary server if main server loses connection
- Supports T.38 Fax for creating Fax-over-IP
- Supports a wide range of caller ID formats
- Use with Grandstream’s UCM series of IP PBXs for Zero Configuration provisioning
| brand | Grandstream |
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Grandstream HT812 – Technical Specifications
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 28.5 x 130 x 90 mm (H x W x D)
- Weight: 353.33g
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