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Grandstream HT818 v2
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Telephone Interfaces
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8x RJ11 FXS ports; can be expanded by peering with an FXS gateway |
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Network Interface
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2x 10/100/1000Mbps RJ45 ports |
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LED Indicators
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POWER, NET1, NET2, PHONE1, PHONE2, PHONE3, PHONE4, PHONE5, PHONE6, PHONE7, PHONE8 |
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Factory Reset Button
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Yes |
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Voice, Fax, Modem
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Telephony Features
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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
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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
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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
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2 REN, up to 1km on 24AWG line |
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Caller ID
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Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID |
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Dial Methods
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DTMF, Pulse |
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Disconnect Methods
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Busy Tone, Polarity Reversal/Wink, Loop Current |
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Signaling
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Network Protocols
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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
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Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS), Traffic Shaping |
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DTMF Method
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In-audio, RFC2833 and/or SIP INFO |
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Provisioning and Control
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HTTP, HTTPS, SSH, TFTP, TR-069, secure and automated provisioning using AES encryption, syslog |
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Security
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Media
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SRTP |
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Control
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TLS/SIPS/HTTPS, SDP(RFC 2327), Refer (RFC 3515), Offer/Answer (RFC3265) SIP V2.0 (RFC 3261, 3262, 3264), RFC3261 ETC (3GPP TS 24.629, RFC 3515, RFC 3891, RFC 3892) SIP Session Timer (RFC 4028) |
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Management
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Syslog support, SSH, remote management using web browser |
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Physical
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Universal Power Supply
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Input: 100-240VAC, 50-60Hz; Output: 12V/1.5A |
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Environmental
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Operational: 32° – 123°F or 0° – 50°C Storage: 14° – 140°F or -10° – 60°C Humidity: 10 – 90% Non-condensing |
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Dimension and Weight
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180 x 120 x 36 mm 356g |
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Compliance
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FCC/CE/RCM |