Grandstream HT812 v2 - 2-Port FXS ATA with Gigabit NAT Router
Product Features
The Grandstream HT812 v2 is a 2-port analogue telephone adapter (ATA) with an integrated Gigabit NAT router. It connects two analogue phones or fax machines to a SIP phone system or VoIP service, with two Gigabit network ports, 2 SIP profiles, TLS/SRTP and T.38 fax.
Grandstream HT812 v2 - 2-Port FXS ATA with Gigabit NAT Router
The Grandstream HT812 v2 is an advanced 2-port analogue telephone adapter with 2 FXS ports and an integrated Gigabit NAT router. Grandstream lists 2 SIP profiles, dual 10/100/1000 Mbps ports, a built-in NAT router with routing speeds up to 100 Mbps, TLS and SRTP security with a unique security certificate per unit, TR-069 and XML provisioning, failover SIP server, T.38 fax and 3-way conferencing.
What the HT812 v2 is for
It lets you keep analogue phones, cordless analogue phones or fax machines on a SIP phone system or VoIP service. Grandstream lists zero-configuration provisioning with its UCM series IP PBXs. See the Grandstream range and our VoIP phones.
Key features
- 2 SIP profiles through 2 RJ11 FXS ports
- Two 10/100/1000 Mbps RJ45 ports with built-in NAT router (routing up to 100 Mbps)
- TLS and SRTP encryption, unique security certificate per unit
- Automated provisioning with TR-069 and XML config files
- Failover SIP server
- T.38 Fax-over-IP
- 3-way voice conferencing
- LED indicators: POWER, NET1, NET2, PHONE1, PHONE2
Full specification
| General | |
| Brand | Grandstream |
| Model | HT812 v2 |
| Manufacturer part number (MPN) | HT812-V2 |
| EAN | 6947273705321 |
| Type | 2-port analogue telephone adapter (ATA) with integrated Gigabit NAT router |
| Interfaces | |
| Telephone interfaces | Two (2) RJ11 FXS ports; can be expanded by peering with an FXS gateway |
| Network interfaces | Two (2) 10/100/1000 Mbps RJ45 ports |
| LED indicators | POWER, NET1, NET2, PHONE1, PHONE2 |
| Factory reset button | Yes |
| Voice and fax | |
| Telephony features | Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference |
| 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, line echo cancellation |
| Fax over IP | T.38 Group 3 fax relay up to 14.4 kbps, auto-switch to G.711 for fax pass-through |
| Ring load | 3 REN: up to 1 km on 24 AWG |
| Caller ID | Bellcore Type 1 and 2, ETSI, BT, NTT and DTMF-based CID |
| Dial methods | DTMF, pulse |
| Disconnect methods | Busy tone, polarity reversal/wink, loop current |
| Network and security | |
| Protocols | TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, Telnet, STUN, 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 | In-audio, RFC2833 and/or SIP INFO |
| Provisioning | HTTP, HTTPS, SSH, TFTP, TR-069, secure automated provisioning with AES encryption, syslog |
| Security | SRTP (media); TLS/SIPS/HTTPS (control) |
| Management | Syslog, SSH, remote management by web browser |
| Power and physical | |
| Power supply | Universal power supply: input 100-240 V AC 50-60 Hz, output 12 V 0.5 A |
| Dimensions | 28.5 x 130 x 90 mm (H x W x D) |
| Weight | 353.33 g |
| Operating temperature | 0 to 50 °C |
| Humidity | 10-90% non-condensing |
What you will need
An analogue phone or fax machine for each FXS port (2), a SIP account per line from your IP PBX or VoIP provider, and a network connection to your router or switch. The power supply is listed in Grandstream's datasheet.
Buying from Zenith Security Co.
We are a UK supplier, not an installer, and we will go through the product with you before you buy. We have been operating since 2012 and our trade counter is at Unit 3, Park View Centre, 243 Dudley Road, Wolverhampton WV2 3JU. Trade accounts are available - see our trade customer page.
How many phones can I connect?
Two, one per FXS port, with 2 SIP profiles. Grandstream notes the ports can be expanded by peering with an FXS gateway.
What does the built-in router do?
The second Gigabit port lets the HT812 v2 act as a NAT router; Grandstream lists routing speeds up to 100 Mbps.
Does it support fax?
Yes. Grandstream lists T.38 Group 3 fax relay up to 14.4 kbps, with auto-switch to G.711 for fax pass-through.
Will it work with my phone system?
It is a standard SIP device, so it works with SIP-based IP PBXs and VoIP services. Grandstream lists zero-configuration provisioning with its UCM series IP PBXs. Call us if you want us to check a particular system.
How quickly can I get it?
Orders are dispatched for delivery within 1-3 working days to England, Scotland and Wales; we do not ship to Northern Ireland. You can also collect from our trade counter - please call first so we can confirm your order is ready.
Can I collect it from your trade counter?
Yes. Our trade counter is at Unit 3, Park View Centre, 243 Dudley Road, Wolverhampton WV2 3JU. Please call 01902 902251 first so we can confirm your order is ready.
Questions on specification or compatibility: call 01902 902251, see our FAQ and support pages, or contact us.
| Product Code | HT812-V2 |
|---|---|
| Dimensions | 28.5 x 130 x 90 mm (H x W x D) |
| Manufacturer | Grandstream |
| Power Features | Universal power supply: input 100-240 V AC 50-60 Hz, output 12 V 0.5 A |
| Connection Type | Wired |
| Product Type | ip pbx & gateway |
| Certified For | SIP / Open Standard |
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