Grandstream HT812 v2
The Grandstream HT812 v2 is an advanced 2-port analog telephone adapter with dual FXS ports and a built-in Gigabit NAT router. It supports 2 SIP profiles, secure VoIP encryption, T.38 Fax-over-IP, and automatic SIP failover. Ideal for integrating legacy analog phones into VoIP networks, it offers high-quality voice, built-in router functionality, and seamless compatibility with Grandstream UCM IP PBXs.
Key Features:
2 FXS ports, supports 2 SIP profiles
Built-in Gigabit NAT router (up to 100Mbps routing speed)
T.38 Fax and 3-way voice conferencing support
TLS & SRTP encryption for call and data security
Automatic failover to secondary SIP server
Wide range of Caller ID formats supported
LED indicators: POWER, NET1, NET2, PHONE1, PHONE2
TR-069 and XML-based provisioning options
Zero Configuration when used with Grandstream UCM IP PBXs
Description
Market-Leading Features (Detailed):
Dual FXS Ports with 2 SIP Profiles:
Supports two analog phones or fax machines via two FXS ports, with independent SIP profiles for simultaneous service or failover usage.Integrated Gigabit NAT Router:
Includes a powerful NAT router capable of up to 100 Mbps routing throughput—ideal for high-speed broadband environments without the need for a separate router.High-Security Communications:
Features advanced encryption using TLS and SRTP protocols, protecting both voice calls and provisioning data from interception or tampering.Automatic Failover Redundancy:
Automatically switches to a secondary SIP server if the primary becomes unreachable, ensuring uninterrupted communication.Full T.38 Fax Support:
Enables reliable Fax-over-IP (FoIP) through T.38 protocol support, making it suitable for offices requiring digital fax services.3-Way Voice Conferencing:
Allows users to host 3-way conference calls directly from analog devices connected to the HT812, enhancing collaboration without additional systems.Wide Caller ID Compatibility:
Supports various international caller ID standards, ensuring accurate caller display across regions.LED Status Indicators:
Clear visual feedback for network and port status: POWER, NET1, NET2, PHONE1, PHONE2.Zero Configuration with Grandstream UCM IP PBXs:
When used with Grandstream’s UCM series PBXs, it offers Zero Configuration provisioning for instant deployment and ease of management.