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2 LCDs (Main + DSS), 6 SIP Lines, Action URL / Active URI, Black/White List Call Filtering, Call log (100 entries, in/out/missed), Network Time Synchronization, Phonebook (500 entries), Programmable DSS/Soft keys, Remote Phonebook (XML/LDAP), Voice Message Waiting Indication (VMWI)

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Anonymous Call (Hide Caller ID), Auto-Answering (per line), Call Forwarding (Always/Busy/No Answer), Call Hold / Resume, Call out / answer / reject, Call Parking/Pick-up (depending on server), Call Transfer (Attended/Unattended), Call Waiting, Caller ID Display, Do-Not-Disturb (per line / per phone), Hot Line, Hot-Desking, Intercom, Local 3-way Conference, Mute / Unmute (microphone), Redial/Auto-Redial, Speed Dial, Voice Message (on server)

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DSS Key-mapping LCD x1:color-screen LCD, HD Hands-free Microphone (0 ~ 7KHz) x1, HD Hands-free Speaker (0 ~ 7KHz) x1, HD Handset (RJ9) x1, Keypad: 38 keys, Main Chipset: Broadcom, Main LCD x1: 2.8 inch (320×240) color-screen LCD, RJ45 Ethernet Jacket x2: Network x1 (802.3AF POE Class 2 Enabled), PC x1 (Bridged to Network), RJ9 Phone Jacket x2: Handset x1, Headphone x1

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Codec:G.711A/u, G.7231 high/low,G.729a/b, G.722,G.726, Comfort Noise Generation (CNG), DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO, Echo Cancellation(G.168), HD voice ( HD handset, HD speaker), Voice Activity Detection (VAD)

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Firewall, openVPN, Network Access Control: 802.1x, QoS, Support DHCP client on WAN, Support DHCP server on LAN, VLAN, VPN: L2TP (Basic Unencrypted) / OpenVPN

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Fanvil

Yealink

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SIP-T46S

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16 VoIP accountsCall hold, mute, DNDOne-touch speed dial, hotlineCall forward, call waiting, call transfer Group listening, SMS, emergency callRedial, call return, auto answer3-way conferencingDirect IP call without SIP proxy Ring tone selection/import/delete
Set date time manually or automatically
Dial plan, XML Browser, Action URL/URI
RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
USB port (2.0 compliant) for:
Bluetooth earphone through BT40, Wi-Fi through WF40, USB call recording through USB flash drive
Enhanced DSS key

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SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDPMED, LDAP, TR-069, 802.1x, TLS, SRTP

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SIP v1 (RFC2543), v2 (RFC3261) Call server redundancy supported NAT traversal: STUN mode Proxy mode and peer-to-peer SIP link mode IP assignment: static/DHCP/PPPoE HTTP/HTTPS web server
Time and date synchronization using SNTP UDP/TCP/DNS-SRV(RFC 3263) QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
SRTP for voice Transport Layer Security (TLS) HTTPS certificate manager AES encryption for configuration file Digest authentication using MD5/MD5-sess OpenVPN, IEEE802.1X
IPv6, LLDP/CDP/DHCP VLAN, ICE

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10 line keys with LED 10 line keys can be programmed up to 27 paperless DSS keys (3-page view)7 features keys: message, headset, hold, mute, transfer, redial, hands-free speakerphone 4 context-sensitive “soft” keys 6 navigation keys Volume control keys Illuminated mute key Illuminated headset key Illuminated hands-free speakerphone key

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Support for G.711µ/a, G.722 (wide-band), G.723 (pending), G.726-32, G.729 A/B, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO)

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English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, simplified and traditional Chinese, Korean, Japanese and more

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FCC: Part 15 (CFR 47) Class BCE : EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-1RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950; AS/NZS 60950.1