Here are the detailed specifications for the Grandstream HT813 Analog Telephone Adapter (ATA):
Overview
The Grandstream HT813 is a hybrid analog telephone adapter featuring both FXS and FXO ports. This design allows users to integrate traditional analog devices with VoIP networks while maintaining access to the PSTN line. Its compact form factor, high-definition voice quality, and robust feature set make it suitable for both residential and small business applications.
Key Specifications
Interfaces
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FXS Port: 1 RJ11 port for connecting analog telephones
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FXO Port: 1 RJ11 port for connecting to the PSTN line
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Network Ports: 2 RJ45 10/100 Mbps Ethernet ports (LAN and WAN)
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LED Indicators: Power, LAN, WAN, FXS, FXO
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Factory Reset Button: Yes
Voice & Telephony Features
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SIP Accounts: Supports 2 SIP profiles (one per port)
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Voice Codecs: G.711 (A-law and μ-law), G.722, G.723.1, G.726-32, G.729A/B, iLBC, OPUS
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Fax Support: T.38 Fax-over-IP and G.711 pass-through
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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
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Echo Cancellation: Advanced line echo cancellation
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Jitter Buffer: Dynamic jitter buffer
Network & Security
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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
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QoS: Layer 2 (802.1Q VLAN, SIP/RTP 802.1p), Layer 3 (ToS, DiffServ, MPLS)
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Security: TLS and SRTP encryption for secure voice communication
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Provisioning: Supports TR-069 and XML configuration files for automated provisioning
Power & Environmental
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Power Supply: Input: 100-240V AC, 50-60Hz; Output: 12V DC, 0.5A
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Dimensions: Approximately 130.5 x 90.5 x 29 mm
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Weight: Approximately 142g
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Operating Temperature: 0°C to 40°C
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Humidity: 10% to 90% (non-condensing)
Compliance
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FCC, CE, C-TICK, ITU-K.21 certifications
Key Features
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Supports 2 SIP profiles through 1 FXS and 1 FXO port
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Integrated NAT router with dual 100Mbps LAN and WAN ports
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Lifeline support: FXS port is hard-relayed to FXO port during power outages
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Supports 3-way voice conferencing per port
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Automated and secure provisioning options using TR-069
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Supports T.38 Fax for reliable Fax-over-IP
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Failover SIP server automatically switches to secondary server if main server loses connection
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Strong AES encryption with security certificate per unit
