
The Grandstream HT802 V2 is an analogue telephone adapter (ATA) designed to integrate two traditional telephones into a VoIP network. Thanks to its compact size and advanced management features, it enables businesses, small offices and service providers to take advantage of IP telephony whilst retaining their existing analogue equipment.
The HT802 V2 features 2 FXS ports and 1 10/100 Mbps RJ45 Ethernet port, allowing two analogue telephone devices to be connected. It supports 2 SIP profiles, offering greater flexibility in configuring communications compared to single-port adapters.
The compact dimensions of 100 x 100 x 29.5 mm make it easy to install on desks, workstations or in small technical spaces.
Support for the G.711, G.722, G.723.1, G.729A/B, G.726-32, iLBC and Opus codecs ensures compatibility with various VoIP infrastructures. Advanced echo cancellation and dynamic jitter buffering help to improve call stability.
Features such as call transfer and call forwarding, call waiting, Do Not Disturb mode and 3-way conferencing are available. Support for T.38 fax also enables the transmission of documents over IP networks, using G.711 pass-through mode.
The device incorporates TLS for signalling and SRTP for protecting voice streams, helping to ensure the confidentiality of business communications.
The SIP failover function enables automatic switching to a secondary server in the event of a loss of connection with the primary server, thereby improving service continuity.
The HT802 V2 simplifies deployment and maintenance thanks to automatic provisioning via XML files and the TR-069 protocol. It also supports remote management via a web interface, SSH and syslog.
When used in conjunction with compatible Grandstream UCM IP PBX systems, the Zero Config feature simplifies device configuration, making it particularly useful in corporate installations and environments managed by VoIP service providers.
The Grandstream HT802 V2 is suitable for offices, commercial premises, multi-line telephone set-ups and managed VoIP installations. It is a practical solution for connecting two analogue telephones to an IP PBX or a compatible SIP service, avoiding the immediate replacement of existing handsets.
The available features depend on the configuration of the telephone system and the VoIP service used.
| Feature | Value |
|---|---|
| Device type | Analogue telephone adapter (ATA) |
| Telephone ports | 2 FXS |
| Network port | 1 Ethernet RJ45 10/100 Mbps |
| 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 |
| Telephone functions | Call transfer, call forwarding, call 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 |
| Audio security | SRTP |
| Signalling security | TLS, SIPS |
| Secure management | HTTPS, SSH |
| Provisioning | HTTP, HTTPS, TFTP, TR-069, XML files |
| Provisioning encryption | AES |
| Automatic configuration | Zero Config with compatible Grandstream UCM PBXs |
| SIP redundancy | Automatic SIP server failover |
| Remote management | Web interface, SSH, syslog |
| LED indicators | Power, network, phone 1, phone 2 |
| Reset button | Yes |
| Ringing capacity | 2 REN |
| Analogue line range | Up to 1 km with 24 AWG cable |
| Input power | 100–240 V AC, 50/60 Hz |
| Required output power | 5 V DC, 1 A |
| Operating temperature | 0 to 40 °C |
| Storage temperature | From -10 to 60 °C |
| Relative humidity | 10–90 per cent, non-condensing |
| Dimensions | 100 x 100 x 29.5 mm |
| Weight | 114 g, excluding packaging |
| Compliance | FCC 15B, AS/NZS CISPR22, AS/NZS60950, EN55022, EN55024, EN60950, EN61000-3-2, EN61000-3-3, UL (power supply) |
| Manufacturer part # | HT802 v2 |
|---|---|
| Warranty | 2 years |
| Type of networking product | Gateway |
| Managed | Managed |
| Rackable | Not rackable |
| Power Over Ethernet (PoE) | Without PoE |