Nguồn	• IEEE 802.3af Power over Ethernet (built in) • Optional external universal AC power supply: 100-240V, 0.4A, 48V/19W
Màn hình	• Size (pixels): 248 x 68 (W x H) • White LED backlight with custom intensity control
Phím	• Standard 12-key keypad • Context-dependent soft keys: 3 • On-hook/Off-hook, redial, mute, volume up/down
Tính năng audio	• Loudspeaker • Frequency: 220-14,000 Hz • Volume: Adjustable to 86 dB at 1/2 meter peak volume • Individual volume settings with visual feedback for each audio path • Voice activity detection • Comfort noise fill • DTMF tone generation / DTMF event RTP payload • Low-delay audio packet transmission • Adaptive jitter buffers • Packet loss concealment • Acoustic echo cancellation • Background noise suppression • Supported Codecs • G.711 (A-law and Mu-law) • G.729a (Annex B) • G.722, G.722.1 • G.722.1C • Siren 14
Tính năng cuộc gọi	• Shared call / bridged line appearance • Busy Lamp Field (BLF) • Distinctive incoming call treatment/ call waiting • Call timer • Call transfer, hold, divert (forward), pickup • Called, calling, connected party information • Local three-way conferencing • One-touch speed dial, redial • Call waiting • Remote missed call notification • Automatic off-hook call placement • Do not disturb function
Tính năng khác	• Local feature-rich GUI • Time and date display • User-configurable contact directory and call history (missed, placed, and received) • Customizable call progress tones • Wave file support for call progress tones • Unicode UTF-8 character support.Multilingual user interface encompassing Simplified Chinese, Danish, Dutch,English (Canada / US / UK), French,German, Italian, Japanese, Korean,Norwegian, Polish, Portuguese, Russian,Slovenian, Spanish, Swedish
Kết nối	• Ethernet 10/100 Base-T • 2.5mm connection port • EX mic ports: Two RJ-9 ports • IP Address Configuration: DHCP and Static IP • Time synchronization with SNTP server • FTP / TFTP / HTTP / HTTPS serverbased central provisioning for mass deployments. Provisioning server redundancy supported. • Web portal for individual unit configuration • QoS Support – IEEE 802.1p/Q tagging (VLAN), Layer 3 TOS and DSCP • Network Address Translation (NAT) support – static • RTCP support (RFC 1889) • Event logging • Local digit map • Hardware diagnostics • Status and statistics • User selectable ringer tones • Convenient volume adjustment keys • Field upgradeable
Bảo mật	• Transport Layer Security (TLS) • Encrypted configuration files • Digest authentication • Password login • Support for URL syntax with password for boot server • HTTPS secure provisioning • Support for signed software executables
An toàn	• CE Mark • EN60950-1 • IEC60950-1 • UL60950-1 • CAN/CSA C22.2 No.60950-1-03 • AS/NZS60950-1 • RoHS Compliant
EMC	• FCC Part 15 (CFR 47) Class B • ICES-003 Class B • EN55022 Class B • CISPR22 Class B • AS/NZS CISPR22 Class B • VCCI Class B • EN22024
Telecom	• AS/ACIF S004 • Telepermit • KCC • GOST-R • TRA
Giao thức	• IETF SIP (RFC 3261 and companion RFCs IEEE 802.3af Power over Ethernet version ships with • Telephone Console • 25 foot Ethernet cable • Quick Start Guide • Quick User Guide
Môi trường hoạt động	• Operating temperature: 32 - 104 degrees F (0 - 40 degrees C) • Relative humidity: 20%-85% (noncondensing) • Storage temperature: -22 - 131 degrees F (-30 - 55 degrees C)
Kích thước	• 14.5 x 12.25 x 2.5 in (36.8 x 31.1 x 6.4 cm) (L x W x H)
Trọng lượng	• 1.75 lb (0.8 kg)