The Grandstream HT812 is a powerful Analog Telephone Adapter
Designed for users looking to connect their analog devices to a VoIP network in either a home or office. It offers an advanced 2-port analog telephone adapter (ATA) with 2 FXS ports and an integrated Gigabit NAT router.
The Grandstream HT812 is an easy-to-use 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. The HT812 delivers outstanding 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.
Features of the Grandstream HT812
|•||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|
Specifications of the Grandstream HT812
|•||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|
|•||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|
|•||Management: Syslog support, telnet, remote management using web browser|
|•||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|
What is an FXS port?
FXS stands for Foreign Exchange Subscriber, a port that connects the router or access server to end-user equipment such as office phones, fax machines, or modems. In other words, it is a plug on the wall that delivers dial battery, loop current, and ringing voltage to the device, so that the analog signal can be transmitted.
What is an FXO port?
FXO stands for Foreign Exchange Office, a port on the end communication device, such as an office phone or fax machine. The FXO connects the device to the FXS port, as well as to the outside telephone line, requesting the dial tone needed to initiate a call.