The HT812 delivers powerful VoIP technology and routing capabilities to home and office environments, and allows users to successfully connect their analog devices to a manageable and powerful VoIP network. Built using Grandstream?s market-leading SIP ATA/gateway technology, with millions of units successfully deployed worldwide, this powerful ATA features exceptional voice quality in various applications and environments. The HT812 comes with 2 easy-to-use FXS ports, an integrated Gigabit NAT router, state-of-the-art encryption with a unique security certificate per unit, automated provisioning for volume deployment and device management and outstanding network performance.
Interfaces | |
Telephone Interfaces | Two (2) RJ11 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, SSH, 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, SSH, TFTP, TR-069 , secure and automated provisioning using AES encryption, syslog |
Security | |
Media | SRTP |
Control | TLS/SIPS/HTTPS |
Management | Syslog support, SSH, remote management using web browser |
Physical | |
Universal Power Supply | Input: 100-240VAC, 50-60Hz Output: 12V/0.5A |
Environmental | Operational: 32° - 104°F or 0° - 40°C Storage: 14° - 140°F or -10° - 60°C Humidity: 10 - 90% Non-condensing |
Dimension and Weight | 28.5 x 130 x 90 mm (H x W x D) Weight: 353.33g |
Compliance | FCC/CE/RCM, K.21 |