The Grandstream HT812 v2 is a 2-port ATA with an integrated Gigabit NAT router, exceptional voice quality, and strong per-unit encryption.
The HT812 V2 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.
Features Supports 2 SIP profiles and 2 FXS ports Strong AES encryption with security certificate per unit Automated & secure provisioning options using TR069 3-way voice conferencing per port Exceptional voice quality with wideband HD codec Supports T.38 fax for reliable fax over IP Supports dual Gigabit network ports High performance NAT router
Specifications
Telephone interfaces: Two (2) RJ11 FXS ports; can be expanded by peering with an FXS gateway
Network interfaces: Two (2) 10/100/1000Mbps RJ45 ports
LED indicators: POWER, NET1, NET2, PHONE1, PHONE2
Factory reset button: Yes
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.722, G.723.1, G.729A/B, G.726-32, 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
Dial methods: DTMF, Pulse
Disconnect methods: Busy tone, polarity reversal/wink, loop current
Network protocols: TCP/IP/UDP, RTP/RTCP (RFC1889, 1890), HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, Telnet, STUN (RFC3489, 5389), SIP (RFC3261), SIP over TCP/TLS, SRTP, SNMP, TR-069, IMS/3GPP, IPoE
QoS: Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS), Traffic shaping
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
Media: SRTP
Control: TLS/SIPS/HTTPS, SDP(RFC 2327), Refer (RFC 3515), Offer/Answer (RFC3265) SIP V2.0 (RFC 3261, 3262, 3264), RFC3261 ETC (3GPP TS 24.629, RFC 3515, RFC 3891, RFC 3892) SIP Session Timer (RFC 4028)
Management: Syslog support, SSH, remote management using web browser
Universal power supply: Input: 100-240VAC, 50-60Hz Output: 12V/0.5A
Environmental: Operational: 32º – 123ºF or 0º – 50ºC 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
Compliance: FCC/CE/RCM, K.21
