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Grandstream HT812 V2 2-port Gigabit VoIP ATA
Internal ref: GRAHT812V2 // Manufacturer part #: HT812-V2
VoIP telephone adapter with 2 FXS ports, 2 Gigabit connections and a built-in NAT router, ideal for connecting analogue telephones to corporate IP networks.
NEW
£39.99
£47.99 Incl. VAT
2 years of manufacturer warranty Subject to manufacturer conditions
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Key features
- VoIP ATA adapter for connecting 2 analogue telephones to an IP network
- 2 FXS ports: supports 2 SIP profiles
- Gigabit connectivity: 2 x 10/100/1000 Mbps RJ45 Ethernet ports with NAT router
- HD audio: wideband codec, advanced echo cancellation and 3-way conferencing
- Advanced security: AES encryption with individual certificates and TLS/SRTP protocols
- Automated management: secure provisioning via TR-069 and remote configuration
- Features: call transfer and forwarding, call waiting, ‘Do Not Disturb’ mode and T.38 fax
In the box
- 1 X Grandstream HT812 V2
Product range:
Product description
Grandstream HT812 V2: VoIP telephony with integrated Gigabit NAT router
The Grandstream HT812 V2 is an analogue telephone adapter (ATA) designed to connect two traditional telephones to a VoIP network. It combines 2 FXS ports, Gigabit connectivity and an integrated NAT router, offering a versatile solution for offices, businesses and professional telephone installations.
Two telephone lines and Gigabit connectivity
Thanks to the 2 FXS ports and support for 2 SIP profiles, the HT812 V2 allows you to integrate two analogue devices into an IP telephony infrastructure. The 2 x 10/100/1000 Mbps RJ45 Ethernet ports and the integrated NAT router also allow you to manage network connectivity, without requiring a separate router for this function.
Its compact design makes it easy to install on desks and workstations where space is limited.
HD audio and professional telephony features
The device supports voice codecs such as G.722, G.711, G.729A/B and Opus, offering compatibility with various VoIP systems and wideband audio communications. Advanced echo cancellation and dynamic jitter buffering help to maintain good call quality.
Each port supports 3-party voice conferencing. Call transfer and call forwarding, call waiting, Do Not Disturb mode and caller ID are also available. Support for T.38 fax enables the transmission of documents over IP networks.
Advanced security for IP communications
The HT812 V2 incorporates AES encryption with an individual security certificate per device, helping to protect configuration and provisioning operations.
The TLS and SRTP protocols also enable the protection of SIP signalling and audio streams respectively. This combination meets the security requirements of corporate telephony infrastructures.
Automatic provisioning and simplified management
Support for automatic provisioning via TR-069, HTTP, HTTPS and TFTP simplifies the installation and management of multiple devices. Administrators can also use the web interface, SSH and syslog for remote monitoring and maintenance.
Quality of Service (QoS) features, including 802.1Q VLANs, 802.1p prioritisation and traffic management, enable the optimisation of voice communications over the network.
Business Applications and Compatibility
The Grandstream HT812 V2 is suitable for small offices, businesses, commercial enterprises and VoIP service providers wishing to retain their existing analogue telephones whilst utilising a Gigabit network.
It is compatible with SIP-based telephony infrastructures and analogue devices that can be connected via FXS ports. The availability of features depends on the IP PBX or VoIP service used.
Technical specifications:
| Feature | Value |
|---|---|
| Device type | Analogue telephone adapter (ATA) with NAT router |
| Telephone ports | 2 FXS |
| Ethernet ports | 2 RJ45 10/100/1000 Mbps |
| Integrated router | Gigabit NAT |
| SIP profiles | 2 |
| Signalling protocol | SIP (RFC 3261) |
| Voice codecs | G.711, G.722, G.723.1, G.729A/B, G.726-32, iLBC, Opus |
| Audio processing | Advanced echo cancellation, dynamic jitter buffer |
| Conference calling | 3 participants per port |
| Telephone functions | Transfer, forward, hold, call waiting, Do Not Disturb |
| Fax over IP | T.38 Group 3 up to 14.4 kbps |
| Fax pass-through | G.711 |
| Caller ID | Bellcore Type 1 and 2, ETSI, BT, NTT, DTMF |
| Dialling methods | DTMF, pulse |
| DTMF transmission | In-band, RFC 2833, SIP INFO |
| Disconnection methods | Busy tone, polarity reversal/Wink, line current |
| Network protocols | TCP/IP, UDP, RTP/RTCP, HTTP/HTTPS, DNS, DHCP, NTP, TFTP, STUN, SIP, SNMP, TR-069, IMS/3GPP, IPoE |
| Quality of Service (QoS) | 802.1Q VLAN, 802.1p, ToS, DiffServ, MPLS, traffic shaping |
| Audio security | SRTP |
| Signalling security | TLS, SIPS |
| Provisioning security | AES encryption with individual certificate |
| Secure management | HTTPS, SSH |
| Provisioning | HTTP, HTTPS, TFTP, TR-069 |
| Remote management | Web interface, SSH, syslog |
| LED indicators | Power, network 1, network 2, telephone 1, telephone 2 |
| Reset button | Yes |
| Ring capacity | 3 REN |
| Analogue line range | Up to 1 km with 24 AWG cable |
| Input power | 100–240 V AC, 50/60 Hz |
| Required output power | 12 V DC, 0.5 A |
| Operating temperature | 0 to 40 °C |
| Storage temperature | -10 to 60 °C |
| Relative humidity | 10–90 per cent, non-condensing |
| Dimensions | 130 x 90 x 28.5 mm (W x D x H) |
| Weight | 353.33 g |
| Compliance | FCC, CE, RCM |
Files
Grandstream HT812 V2 - Datasheet
Product Specs.
| Manufacturer part # | HT812-V2 |
|---|---|
| Warranty | 2 years |
| Type of networking product | Gateway |
| Managed | Managed |
| Rackable | Not rackable |
| Power Over Ethernet (PoE) | Without PoE |
Frequently Asked Questions
Currently there are no questions for this product.