Overview of Grandstream HT813
The Grandstream HT813 is a hybrid analog telephone adapter that features 1 analog telephone FXS port and 1 PSTN line FXO port, offering backup lifeline support using a PSTN line. Combining FXO and FXS ports enables remote calling to and from the PSTN line, while the FXS port extends VoIP service to one analog device such as a phone or fax. With its ultra-compact size, HD voice quality, advanced VoIP functionality, strong security and multiple auto-provisioning options, the HT813 suits small offices, clinics, shops and homes that want to keep an existing landline connected while moving to VoIP or an IP PBX.
Technical Specifications – Grandstream HT813
Interfaces
| Lines | 2 lines |
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| Telephone Interfaces | One (1) RJ11 FXS port, One (1) RJ11 FXO PSTN line port with lifeline support |
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| Network Interface | Two (2) 10/100Mbps ports (RJ45) with integrated NAT router |
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| LED Indicators | POWER, LAN, WAN, FXS, FXO |
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| Factory Reset Button | Yes |
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Voice, Fax, Modem
| Audio Conferencing | 3-Way Voice Conferencing Per Port |
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| Telephony Features | Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference |
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| Voice Codecs | G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726-32, iLBC, Opus, dynamic jitter buffer, advanced line echo cancellation |
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| Fax over IP | T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through |
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| Short/Long Haul Ring Load | 3 REN: Up to 1km on 24 AWG |
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| Caller ID | Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID |
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| Dial Methods | DTMF, Pulse |
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| Disconnect Methods | Busy Tone, Polarity Reversal/Wink, Loop Current |
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Signaling
| Network Protocols | TCP/IP/UDP, RTP/RTCP (RFC1889, 1890), HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, Telnet, STUN (RFC3489, 5389), SIP (RFC3261), SIP over TCP/TLS, SRTP, SNMP, TR-069, IMS/3GPP, IPoE |
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| QoS | Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS), Traffic Shaping |
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| DTMF Method | In-audio, RFC2833 and/or SIP INFO |
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| Provisioning and Control | HTTP, HTTPS, TFTP, SSH, TR-069, secure and automated provisioning using AES encryption, syslog |
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Security
| Media | SRTP |
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| Control | TLS/SIPS/HTTPS |
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| Management | Syslog support, telnet, SSH, remote management using web browser |
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Physical
| Universal Power Supply | Input: 100-240VAC, 50-60Hz; Output: 12V/0.5A |
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| Environmental | Operational: 32º – 104ºF or 0º – 40ºC; Storage: 14º – 140ºF or -10º – 60ºC; Humidity: 10 – 90% Non-condensing |
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| Dimensions | 130.5 x 90.5 x 29 mm (L x W x D) |
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| Weight | 0.142Kg |
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| Compliance | FCC/CE/C-TICK/ITU-K.21 |
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Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.