•Supports 3 SIP profiles through 1 FXS port and 4 FXO ports
•High performance NAT router
•Lifeline support (FXS port will be hard-relayed to FXO port) in case of power outage
•3-way voice conferencing per port
•Automated & secure provisioning options using TR069
•Supports T.38 Fax for reliable Fax-over-IP
•Failover SIP server automatically switches to secondary server if main server loses connection
•Strong AES encryption with security certificate per unit

•Telephony Interface: 4 x RJ11 FXO ports/1 RJ11 FXS
•Network Interface: 2 x 10/100/1000Mbps RJ45 ports, one with 802.3af PoE-PD support (Up to 1000Mbps in Bridge mode, up to 100Mbps in NAT mode)
•Telephony Features: Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference
•Voice Codecs: G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729, G.726-32, iLBC, OPUS, dynamic jitter buffer, advanced line echo cancellation
•Fax Over IP: T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through
•Short/Long Haul Ring Load: 3 REN - Up to 1km on 24 AWG
•Caller ID: Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
•Dial Methods: DTMF, Pulse
•Disconnect Methods: Busy Tone, Polarity Reversal/Wink, Loop Current
•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
•QoS: Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS), Traffic Shaping
•Provisioning and Control: HTTP, HTTPS, TFTP, SSH, TR-069, secure and automated provisioning using AES encryption, syslog

•1 x HT841
•1 x Ethernet Cable
•1 x Quick Installation Guide
•*Note: Power Supply Not Included