Grandstream HT813 Analog Telephone Adapter, 1 FXS + 1 FXO with PSTN Lifeline

Overview

The Grandstream HT813 connects an ordinary analogue phone or fax machine, and your existing landline, to an internet phone system. It is an analogue telephone adapter (ATA) with one phone port (FXS) and one landline port (FXO), so a home or small office can move to VoIP while keeping its landline, and still make landline calls during a power cut.

Is it right for you?

• Suits a small office or home that wants to keep its existing landline while moving to VoIP, a branch that needs calls in and out through a local landline, or any place that wants a fallback path when power fails.
• One phone and one landline only. For several landlines, the HT841 (4 FXO) or HT881 (8 FXO) gateways are the larger options.
• If you have no landline to keep, the HT801 V2 or HT802 V2 connect one or two analogue phones to VoIP without an FXO port.
• The network ports are 10/100 Mbps, not Gigabit.

Key features

• One FXS (Foreign Exchange Station) RJ11 port for an analogue phone or fax and one FXO (Foreign Exchange Office) RJ11 port for a PSTN (public switched telephone network) landline, each with its own SIP profile.
• Lifeline: when power is lost the FXS port is hard-relayed to the FXO line, so the analogue phone still works on the landline.
• Two 10/100 Mbps RJ45 ports (LAN and WAN) with a built-in NAT router, so a PC can share the same network cable.
• T.38 fax relay up to 14.4 kbps with G.711 pass-through, and 3-way voice conferencing per port.
• Codecs including G.711, G.723.1, G.729A/B, G.726-32, iLBC and Opus.
• TLS and SRTP encryption, AES-encrypted provisioning and TR-069 for automated setup.
• Ring load of 3 REN, up to 1 km on 24 AWG wire.

What else you need

• A SIP account from a VoIP provider or an IP PBX such as a Grandstream UCM (the UCM6301, for example) to place VoIP calls.
• An analogue phone or fax machine and, for the FXO port, a working landline.
• A network cable to your router or switch.
• A mains socket: a universal 12 V DC 0.5 A power adapter is in the box.

Installation

Anyone comfortable with a router can set it up, or your phone system provider can provision it. Connect the WAN port to the network, the phone to the FXS port and the landline to the FXO port, then configure through the web interface or a provisioning server. It is 130.5 x 90.5 x 29 mm, weighs 0.142 kg and is rated for 0 to 40 °C indoor operation.

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 a SIP account or IP PBX for VoIP calls.
• The network ports are 10/100 Mbps, not Gigabit.
• The lifeline only works when a working landline is connected to the FXO port.
• For several landlines, see the HT841 or HT881.