| FXS Ports | 24 FXS |
| Ethernet Ports | 1 RJ45 10/100Mbps RJ45 |
| PSTN Line Port | 1 RJ11, for Fail-Over PSTN |
| LED indicators | LAN Link, LAN Activity, Connection Per Telephone Port |
| LCD display | Backlit 128 x 32 graphic LCD display with support for multiple languages |
| Voice Compression | G.711, G.723.1, G.726 , G.729 A/B, iLBC |
| Fax over IP | T.38 compliant Group 3 Fax Relay up to 14.4kbps and auto-switch to G.711 for Fax pass-through, Fax data pump V.17, V.21, V.27ter, V.29 for T.38 fax relay |
| Telephony Feature | Caller ID display or block, call waiting, blind or attended call transfer, call forward, do not disturb, 3-way conference, last call return, paging, message waiting indicator LED (NEON LED) support and stutter tone, auto dial |
| QoS | DiffServ, TOS, 802.1P/Q VLAN tagging |
| Network Protocols | TCP/ UDP, RTP/ RTCP, HTTP/ HTTPS, ARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, PPPoE, STUN, LLDP (pending) |
| DTMF Method | Flexible DTMF transmission methods including In-audio, RFC2833, and/or SIP INFO |
| Signaling | SIP (RFC 2361) over UDP/ TCP/ TLS |
| SIP Server Profiles & Accounts Per System | 4 distinct SIP server profile per system and indepentent SIP account per telephone port |
| Security | Support for SRTP, TLS/ SIPS, HTTPS, 802.1x |
| Management | Syslog, HTTPS, Web brower, voice prompt, TR-069 |
| Power Input |
Input: 100 ~ 240VAC, 50 ~ 60Hz Output: 12 VDC, 5A |
| Compliance | FCC, CE |
| Dimension | 440 x 185 x 44 mm |
| Weight | 2.57 kg |
|
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