Yealink SIP-T55A User Manual
T55A-Skype for Business Edition
Yealink Skype for Business HD IP Phones
Smart Business Phone Compatible with Microsoft® Skype for Business
The Yealink T55A, compatible with Microsoft® Skype for Business and Office 365, is ideal for worker desk and
common area use. The T55A Android-based phone not only features a 4.3-inch capacitive touch screen and
the consistent Skype-tailored experience, but also owns the capability to upgrade to Teams version. Presenting a standalone voice solution and an unparalleled audio clarity, the T55A is armed with Yealink’s Optima
HD Voice and Yealink Noise Proof Technology. Moreover, The T55A facilitates high-quality collaboration with
flexibility via its USB port for a Wi-Fi, Bluetooth and a USB headset.
4.3-inch Multitouch Screen
HD Audio BToE
SILK Codec
Office 365
Andorid OS
Key Features and Benefits
Easier to be heard and to participate in the call
Yealink Optima HD Voice technology combines cutting-edge hardware and
software, including the Yealink Noise Proof Technology, to provide an excel-
lent audio experience for more efficient and productive calls. As a speech
codec for real-time, packet-based voice communications, SILK, is designed to
perform a higher HD audio quality, which provides scalability in several dimen-
sions and is highly scalable in terms of audio bandwidth, network bit rate, and
complexity. Moreover, its hearing aid compatible (HAC) handset helps the
person who is with hearing loss to hear the voice more clearly.
Rich functionality
The 4.3-inch multi-point screen and the Skype-tailored user interface provide
a rich visual presentation and easy menu navigation. The T55A is fully compat-
ible with Skype for Business and Office 365, making for a rich and capable
ecosystem for team environment. With an all-new USB port, the T55A boasts
unparalleled functionality and expansibility with Bluetooth, Wi-Fi, USB record-
ing and USB headset.
Future-Proof solutions
The T55A owns the capability to transition from Skype for Business to Teams
via device firmware update, which helps customers secure their investment for
the future and allows for better device planning during the migration from
Skype for Business to Teams.
• 4.3 inch (480 x 272) capacitive touch screen
• Optimal HD audio
• SILK speech codec
• Yealink Noise Proof Technology
• Microsoft Skype-tailored user interface
• Supports Office 365, upgradability of
firmware to Teams or SFB edition
• Supports Boss/Admin, Common Area Phone,
Hot desking, BToE
• 1 USB 2.0 port
• Bluetooth headset via BT40
• Wi-Fi via WF50/WF40
• Supports USB headset
• Supports YHS33/YHS33-USB
• Dual-port Gigabit Ethernet, PoE support
www.yealink.com
www.yealink.com
T55A-Skype for Business Edition
Yealink Skype for Business HD IP Phones
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
• Response group
• Visual voicemail, message waiting indicator (MWI)
• Intercom, paging, music on hold
• Phone lock
• Bluetooth, Wi-Fi
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 BT40,
- Wi-Fi through WF50/WF40
• 1 x Security lock port
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port
• 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: 0~40°C (+32~104°F)
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
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
PC
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
Compliance
REACH
USB 2.0
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USB Flash Drive
YEALINK NETWORK TECHNOLOGY CO., LTD. Email: sales@yealink.com Website: www.yealink.com
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