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Product Specification
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Overview
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Grandstream HT-812 อุปกรณ์ IP Analog Telephone Adapter (ATA) 2 FXS, Integrated NAT router, 2 Port Lan 10/100Mbps, รองรับ T.38, 2 SIP Account
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Telephone Interfaces
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Four(4) RJ11 FXS ports
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Network Interfaces
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Two (2) 10/100/1000 Mbps ports (RJ45)
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LED Indicators
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POWER, LAN, WAN, PHONE1, PHONE2, PHONE3, PHONE4
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Factory Reset Button
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Yes
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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.723.1A, G.729A/B/E, G.728, G.726-40/32/24/16, iLBC
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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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3 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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Disconnect Methods
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Busy Tone, Polarity Reversal/Wink, Loop Current
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Network Protocols
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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
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Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS)
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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, TELNET, TFTP, TR-069 , secure and automated provisioning using AES encryption, syslog
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Media
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SRTP
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Control
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TLS/SIPS/HTTPS
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Management
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Syslog support, telnet, remote management using web broswer
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Universal Power Supply
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Input: 100-240VAC, 50-60Hz
Output: 12V VDC, 0.5A
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Environmental
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Operational: 32? ~ 104?F or 0? ~ 40?C;
Storage: -10 ~ 130?F
Humidity: 10 - 90% non condensing
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