DTMF Method In-audio, RFC2833 and/or SIP INFO

QoS Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS)

28.5 x 130 x 90 mm (H x W x D) Weight: 353.33g

Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID

Network Protocols TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR-069

Telephone Interfaces Two (2) RJ11 FXS ports / Network Interfaces Two (2) 10/100/1000Mbps RJ45 ports / Factory Reset Button Yes

LED Indicators POWER, LAN, WAN, PHONE1, PHONE2

Operational: 32º – 104ºF or 0º – 40ºC Storage: 14º – 140ºF or -10º – 60ºC Humidity: 10 – 90% Non-condensing

Media SRTP / Control TLS/SIPS/HTTPS / Management Syslog support, SSH, remote management using web browser

Telephony Features Caller ID display or block, call waiting, flash, blind or attended transfer, forward, / hold, do not disturb, 3-way conference / Short/Long Haul Ring Load 3 REN, up to 1km on 24AWG line

The HT812 is an advanced 2-port analog telephone adapter (ATA) with 2 FXS ports and an integrated Gigabit NAT router. Built upon Grandstream’s market-leading SIP ATA/gateway technology with millions of units successfully deployed worldwide, this powerful ATA features exceptional voice quality in various application environments, strong encryption with unique security certificate per unit, automated provisioning for volume deployment and device management, and outstanding network performance for home and office

Fax Over IP T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax /Pass-through /Voice Codecs G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726, iLBC, / OPUS, dynamic jitter buffer, advanced line echo cancellation

Compliance FCC/CE/RCM, K.21

Universal Power Supply Input: 100-240VAC, 50-60Hz Output: 12V/0.5A

گرنداستریم-Grandstream