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3.2″ TFT LCD, 4 SIP accounts, 462*278 Pixel, Auto Answer, Black list, Call Center Headsets mode, Call forward, call waiting, call transfer, Call Hold, Caller ID, Dialed/Received/Missed call (each 200), Direct IP call without SIP proxy, Hot Line, Local 3-Way Conferencing, Local Phonebook (upto 1000 entries), Mute,DND, Redial, Speed Dial, Voice Mail, White list

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Anonymous call, anonymous call rejection, Call Conference, Call park, call pickup, Call Recording, DND&Call forward state synchronization, Group pickup, Intercom, paging, Music on hold

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3.2″ 462 x 278-pixel TFT LCD, Dual Gigabit Ethernet Port, PoE, WiFi, Up to 4 SIP accounts,3-way conference,Connected with up to 2x TFT LCD expansion modules (RET/AET)

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2 custom ring tone article, 8 own ring tone, 8 volume adjustable + Mute mode, Acoustic Echo Cancellation (AEC), Adaptive Jitter Buffer (AJB), Auto Gain Control (AGC), Comfort Noise Generation (CNG), Full-duplex hands-free speakerphone with AEC (Acoustic Echo Cancellation), Narrowband CODEC: G.711a/u, G.723.1, G.726-32K, G.729AB, Packet Loss Concealment (PLC), Voice Activity Detection (VAD), Wideband codec: G.722, L16,

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AES encryption for configuration file, and P2P mode, Digest authentication using MD5/MD5-sess, DTMF: In-band, HTTP / HTTPS web server, IEEE802.1X, LAN / PC: support bridge mode, LLDP, NAT transverse: STUN mode, Open VPN support, Package tracing export, Phone lock, RFC2833, SIP connection mode: Proxy mode, SIP INFO, Support DNS SRV (RFC3263), Support QoS, Syslog, TLS, User and administrator level access control, VLAN

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Atcom

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Connector : USB, Headset Frequency Response : 150~6000 Hz, Impedance speaker : 150 ohms, Type : Unidirectional

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Neodymium Speaker for loud and clear wideband sound, Gimbaled speaker for perfect fit on all head shapes and sizes

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Headsets compatible for Linux, Windows XP, Vista, 7 & 8, Adjustable Surgical Steel Headband for long term flexibility and strength, Flexible geared Bi-Metal Mic Boom for perfect mic positioning and long life