Overview of Grandstream HT818 V2
Built for users looking for a strong analog-to-VoIP converter, the Grandstream HT818 V2 is a powerful 8-port VoIP gateway with 8 FXS ports and an integrated Gigabit NAT router. It is based on Grandstream's SIP ATA/gateway technology with millions of units deployed worldwide, delivering exceptional voice quality, strong encryption with a unique security certificate per unit, automated provisioning for volume deployment and device management, and outstanding network performance for enterprise use. It is a practical way for hotels, schools, clinics, offices and warehouses to keep many existing analog phones and fax machines working on a modern IP PBX.
Technical Specifications – Grandstream HT818 V2
Interfaces
| Lines | 8 lines |
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| Telephone Interfaces | Eight (8) 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, PHONE5, PHONE6, PHONE7, PHONE8 |
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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/1.5A |
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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 | (L)180mm x (W)120mm x (H)36mm |
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| Weight | 356g |
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| Compliance | FCC/CE/RCM |
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Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.
![[HT818 V2] Grandstream HT818 V2 8-Port FXS Gateway with Gigabit NAT Router, T.38 Fax, TR-069](/web/image/product.image/2725/image_1024/%5BHT818%20V2%5D%20Grandstream%20HT818%20V2%208-Port%20FXS%20Gateway%20with%20Gigabit%20NAT%20Router%2C%20T.38%20Fax%2C%20TR-069?unique=647240a)
![[HT818 V2] Grandstream HT818 V2 8-Port FXS Gateway with Gigabit NAT Router, T.38 Fax, TR-069](/web/image/product.image/2725/image_128/%5BHT818%20V2%5D%20Grandstream%20HT818%20V2%208-Port%20FXS%20Gateway%20with%20Gigabit%20NAT%20Router%2C%20T.38%20Fax%2C%20TR-069?unique=647240a)
