Description
Grandstream HT812 v2 2-Port Analog Telephone Adapter (ATA) with Gigabit NAT Router
Advanced 2-Port ATA with Dual Gigabit Ports & SIP VoIP Support
The Grandstream HT812 v2 is a powerful and reliable 2-port analog telephone adapter (ATA) designed to connect traditional analog phones or fax machines to modern SIP VoIP networks. Featuring dual Gigabit Ethernet ports with an integrated NAT router, this ATA delivers high-performance voice connectivity, advanced telephony features, and secure provisioning for both small business and enterprise environments.
Key Features and Benefits
- 2 FXS ports supporting up to 2 SIP profiles
- Integrated Gigabit NAT router (dual 10/100/1000 Mbps ports)
- Supports T.38 Fax over IP for reliable fax communication
- Automated provisioning options (TR-069 and XML config files)
- Failover SIP server automatically switches to secondary server
- 3-way voice conferencing support
- LED status indicators: POWER, NET1, NET2, PHONE1, PHONE2
- Supports a wide range of caller ID formats
- Secure SIP with TLS and SRTP encryption
High-Performance Enterprise Connectivity
With dual Gigabit Ethernet and built-in NAT routing, the HT812 v2 delivers efficient traffic handling and high throughput. It connects analog devices to IP networks while maintaining voice quality and minimizing network congestion.
Advanced VoIP & Telephony Features
The HT812 v2 supports essential modern telephony functions including caller ID, call waiting, call forward, hold, do not disturb, blind and attended transfer, and message waiting indication. Combined with secure provisioning and VoIP transport options, it is suitable for both commercial and residential deployments.
Part Details:
Grandstream HT812 v2 2-Port Analog Telephone Adapter (ATA) with dual Gigabit ports, SIP VoIP, integrated NAT routing, and T.38 Fax support.
Additional Information:
Interfaces
• Two (2) 10/100/1000 Mbps RJ45 Gigabit Ethernet ports (WAN & LAN)
Telephony Features
• Call waiting, flash, blind or attended transfer
• Forward, hold, do not disturb
• 3-way conferencing per port
Fax Over IP
• Auto-switch to G.711 for fax pass-through
Security & Provisioning
• Automated provisioning via TR-069 & XML
• Failover SIP server
Network & QoS
• Quality of Service (VLAN, SIP/RTP prioritization)
LED Indicators
• NET1
• NET2
• PHONE1
• PHONE2
Package Contents
Power adapter
Ethernet cable
User documentation
***ONE YEAR LIMITED MANUFACTURER’S WARRANTY INCLUDED
For official specifications and details, visit the Grandstream HT812 v2 official product page .
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