Grandstream HT812

Designed for users looking to connect their analog devices to a VoIP network at home or in the office. The HT812 is a powerful analog telephone adapter that is easily deployable and manageable. It comes equipped with 2 FXS ports and an integrated Gigabit NAT router.

Grandstream HT812

Key Features and Benefits
Specifications

Key Features and BenefitsSupports 2 Lines

Supports 2 SIP profiles and 2 FXS ports

Secure

Strong AES encryption with security certificate per unit

HD Audio

Exceptional voice quality with wideband HD codec

E-Fax Compatible

Supports T.38 Fax for reliable Faxover-IP

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, 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.722, 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, IMS/3GPP

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, 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

Physical

Universal Power Supply Input: 100-240VAC, 50-60Hz

Output: 12V/0.5A

Environmental

Operational: 32º – 104ºF 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