Grandstream HT814 Analog Telephone Adapter

​The Grandstream HT814 is a powerful 4-port Analog Telephone Adapter (ATA) designed to connect analog telephones and fax machines to a VoIP network. With its integrated Gigabit NAT router and advanced features, it is ideal for both residential and small business environments.​

Grandstream HT814 – Key Specifications

Hardware Interfaces

• FXS Ports: 4 RJ11 ports for analog telephone connections

• Network Ports: 2 Gigabit Ethernet ports (1 WAN, 1 LAN)

• LED Indicators: Power, LAN, WAN, Phone1, Phone2, Phone3, Phone4

• Factory Reset Button: Yes​

Voice & Telephony Features

• SIP Accounts: Supports 2 SIP profiles across 4 FXS ports

• Voice Codecs: G.711 (A-law and μ-law), G.722, G.723.1, G.726-32, G.729A/B, iLBC, OPUS

• Fax Support: T.38 Fax-over-IP and G.711 pass-through

• Telephony Functions: Caller ID display/block, call waiting, call transfer (blind/attended), call forwarding, call hold, do not disturb (DND), 3-way conferencing per port

• Echo Cancellation: Advanced line echo cancellation

• Jitter Buffer: Dynamic jitter buffer​

Network & Security

• Network Protocols: TCP/IP, UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR-069

• QoS: Layer 2 (802.1Q VLAN, SIP/RTP 802.1p), Layer 3 (ToS, DiffServ, MPLS)

• Security: TLS and SRTP encryption for secure voice communication

• Provisioning: Supports TR-069 and XML configuration files for automated provisioning​

Power & Environmental

• Power Supply: Input: 100-240V AC, 50-60Hz; Output: 12V DC, 0.5A

• Dimensions: Approximately 130.5 x 90.5 x 29 mm

• Weight: Approximately 142g

• Operating Temperature: 0°C to 40°C

• Humidity: 10% to 90% (non-condensing)​

Compliance

• FCC, CE, C-TICK, ITU-K.21 certifications​

Key Features

• Supports 2 SIP profiles through 4 FXS ports

• Integrated Gigabit NAT router with routing speeds up to 100Mbps

• TLS and SRTP security encryption technology to protect calls and accounts

• Automated provisioning options include TR-069 and XML config files

• Supports 3-way voice conferencing per port

• Failover SIP server automatically switches to secondary server if main server loses connection

• Supports T.38 Fax for creating Fax-over-IP

• Supports a wide range of caller ID formats

• Use with Grandstream’s UCM series of IP PBXs for Zero Configuration provisioning​

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