Overview of Grandstream HT814 V2
The Grandstream HT814 V2 is an advanced 4-port VoIP gateway with 4 FXS ports and an integrated Gigabit NAT router. Built on Grandstream's SIP ATA/gateway technology, it connects up to four analog phones or fax machines to a VoIP network with exceptional voice quality and wideband HD codec support. Strong encryption with a unique security certificate per unit, automated provisioning via TR-069 and XML for volume deployment, T.38 Fax-over-IP and 3-way conferencing per port make it well suited to small offices, clinics, schools and hotels that need to integrate several analog extensions or fax lines with an IP PBX such as the Grandstream UCM series.
Technical Specifications – Grandstream HT814 V2
Interfaces
| Lines | 4 lines |
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| Telephone Interfaces | Four (4) RJ11 FXS ports; can be expanded by peering with an FXS gateway |
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| Network Interfaces | Two (2) 10/100/1000Mbps RJ45 ports |
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| LED Indicators | POWER, NET1, NET2, PHONE1, PHONE2, PHONE3, PHONE4 |
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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.722, 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 | 2 REN, up to 1km on 24AWG line |
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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, SSH, TFTP, 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, SDP (RFC 2327), Refer (RFC 3515), Offer/Answer (RFC3265), SIP V2.0 (RFC 3261, 3262, 3264), ETC (3GPP TS 24.629, RFC 3515, RFC 3891, RFC 3892), SIP Session Timer (RFC 4028) |
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| Management | Syslog support, SSH, remote management using web browser |
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Physical
| Universal Power Supply | Input: 100-240VAC, 50-60Hz; Output: 12V/1.0A |
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| Environmental | Operational: 32º – 123ºF or 0º – 50ºC; Storage: 14º – 140ºF or -10º – 60ºC; Humidity: 10 – 90% Non-condensing |
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| Dimensions | 28.5 x 130 x 90 mm (H x W x D) |
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| Weight | 0.29 Kg |
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| Compliance | FCC/CE/RCM, K.21 |
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Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.