Grandstream HT812V2 Analog Telephone Adapter, 2 FXS Ports, Gigabit NAT Router

Overview

The Grandstream HT812 V2 lets two ordinary analogue phones, or a phone and a fax machine, work on an internet phone service or office phone system on a Gigabit network. It is a two-port analogue telephone adapter (ATA) with two Gigabit network ports and a built-in NAT router, so a PC can sit behind the adapter on the same cable run.

Is it right for you?

• Suits a home or small office that keeps two analogue handsets, or a phone plus a fax line, while moving to VoIP, especially where a PC needs to share the same network drop.
• For one or two phones on a 10/100 Mbps network without the router, the HT802 V2 also fits; for four or eight lines see the HT814 V2 or HT818 V2.
• It needs SIP accounts from a VoIP provider or an IP PBX; it does not connect to a landline.

Key features

• Two FXS (Foreign Exchange Station) RJ11 ports with two SIP profiles.
• Two 10/100/1000 Mbps RJ45 ports with a built-in NAT router, so a PC can connect through the adapter on one cable run.
• HD voice with G.722 and Opus, plus G.711, G.723.1, G.729A/B, G.726-32 and iLBC.
• T.38 fax relay up to 14.4 kbps with G.711 pass-through, and 3-way voice conferencing per port.
• AES-encrypted provisioning with a unique security certificate per unit, TLS and SRTP, and TR-069 for automated rollout.
• Ring load of 3 REN, up to 1 km on 24 AWG wire; LEDs for power, both network ports and both phone ports.
• 130 x 90 x 28.5 mm, 353.33 g, rated 0 to 50 °C.

What else you need

• SIP accounts from a VoIP provider or an IP PBX such as a Grandstream UCM. Confirm how the two SIP profiles map to the ports with your PBX administrator or provider.
• Analogue phones, cordless bases or a fax machine.
• A network cable to your router or switch.
• A mains socket: use only the included 12 V DC 0.5 A power adapter.
• If you later need more analogue ports, capacity can be expanded by peering with an FXS gateway.

Installation

Anyone can set it up. Place it on a desk or shelf indoors (rated 0 to 50 °C), connect the uplink to the network port, the PC to the second network port if needed, and the analogue devices to the FXS ports. Configure through the web interface, GDMS (Grandstream Device Management System) or a provisioning server.

Software and licences

Standards-based SIP, so it registers with Grandstream UCM and CloudUCM systems and with third-party SIP servers and hosted VoIP services. Setup is through the web interface, GDMS (Grandstream Device Management System) or a provisioning server (HTTP, HTTPS, TFTP, SSH, TR-069, with AES-encrypted configuration).

Before you buy

• Needs SIP accounts or an IP PBX; there is no landline port.
• Use only the included 12 V DC 0.5 A power adapter.
• Two SIP profiles are listed; confirm how accounts map to ports with your PBX administrator or provider.