Điện thoại IP Yealink SIP-T55A MS Skype for Business

Audio Features

• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Yealink Noise Proof Technology
• Audio codec: G.722, G.711(A/µ), G.729A/B, G.726, G.723.1, Ilbc, SILK
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC

Directory

• Contacts and presence synchronize with client
• Show contacts with presence and profile pictures
• Support local contacts
• Support global search, compatible with exchange
• Intelligent search
• Call history: placed/received/missed/forwarded

Signing into Skype for Business

• Signing in with user credentials/PIN authentication
• Web Sign-in
• Signing in via web user interface
• Signing in via BtoE

BToE features

• Click to call/Click to answer
• Audio device switch from IP Phone to PC
• Wireless pairing with PC client
• As a PC Audio device
• Phone lock with PC

Phone Features

• Presence status: available/busy/DND/be right back/off work/away, reset presence status
• Call hold, call waiting, call merge, mute
• Call forward, call transfer, call park
• SFB conferencing (Microsoft CCCP)
• E911, branch office support
• Boss/Admin function
• Common Area Phone (CAP)
• Calendar support
• Hotline, private line, ring tones
• Hot-desking
• Dial plan, group call pickup
• Response group
• Visual voicemail, message waiting indicator (MWI)
• Intercom, paging, music on hold
• Phone lock
• Bluetooth, Wi-Fi (Only with Dongle)

Display and Indicator

• 4.3″ 480 x 272 capacitive adjustable touch screen
• Multilingual user interface
• Modern Teams UI
• LED for call and message waiting indication

Interface

• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), class 3
• 1 x USB port (2.0 compliant):

– USB headset,

– USB call recording through USB flash drive,

– Bluetooth through BT41,

– Wi-Fi through WF50

• 1 x Security lock port
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port

Management

• Configuration: browser/phone/Auto provisioning
• Yealink Redirection and Provisioning Service (RPS)
• Auto Provisioning via Activation Code
• In-Band Provisioning
• In-Band Configuration Management
• Provisioning priority management
• Systematic diagnosis
• QoE (Monitoring Reports)
• Media Bypass
• Firewall Traversal
• Reset to factory, reboot
• Package tracing export, system log
• Screenshot via URL
• Phone log click to upload
• View license status

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261)
• IPv4/IPv6
• 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)
• EWS authentication
• Auto root certificate fetch
• HTTPS certificate manager
• Digest authentication using MD5/MD5-sess
• IEEE802.1X

Other Physical Features

• Color: Classic Grey
• External Yealink AC adapter (optional):  AC 100~240V input and DC 5V/1.2A output
• USB output currency: 5V 500mA
• Power consumption (PSU): 1.4W-2.6W
• Power consumption (PoE): 1.5W-2.9W
• Dimension (W*D*H*T):  223 mm*206 mm*127 mm*36 mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C (+14~122°F)

Package Features

• Package content:

– Yealink SIP-T55A IP phone

– Handset with handset cord

– Ethernet Cable (2m CAT5E FTP Cable)

– Stand

– Quick Start Guide

– Power Adapter (Optional)

• Qty/CTN: 5 PCS
• N.W/CTN: 4.98 kg
• G.W/CTN: 5.44 kg
• Giftbox size: 249mm*179mm*103mm
• Carton Meas: 529mm*188mm*257mm