Especially designed for busy executives and professionals, the Yealink SIP-T53 is an easy-to-use Prime Business Phone with an adjustable 3.7-inch graphical LCD that you can easily and flexibly find the comfortable viewing angle according to personal and environmental needs. The SIP-T53 IP Phone works with Yealink Bluetooth USB Dongle BT40 and Yealink Wi-Fi USB Dongle WF40/WF50, to keep up with modern wireless technologies and take the first chance in the future wireless age. Its built-in USB 2.0 port allows for USB recording or a direct wired/wireless USB headset or up to three Yealink EXP50 expansion modules connected. Benefitting from these features, the Yealink SIP-T53 is a powerful and expandable office phone that delivers optimum desktop efficiency and productivity.

Specifications

Audio Features

• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Acoustic Shield
• Audio codec: Opus, G.722, PCMA, PCMU, G.729A/B, G.726, G.723.1, iLBC
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC

Display and Indicator

• 3.7" 360x160-pixel graphical LCD with backlight
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status
• Intuitive user interface with icons and soft keys
• Multilingual user interface
• Caller ID with name and number
• Power saving

Phone Features

• Yealink’s SDK (Software Development Kit)
• 16 VoIP accounts
• Call hold, mute, DND
• Redial, call return, auto answer
• One-touch speed dial, hotline
• Call forward, call waiting, call transfer
• Group listening, SMS, emergency call
• 3-way conferencing
• Direct 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:
  • Wired/wireless USB headset
  • USB call recording through USB flash drive
  • Bluetooth headset through BT40
  • Bluetooth call through BT40
  • Mobile contacts synchronization through BT40
  • Wi-Fi through WF40/WF50
  • Expansion module EXP50 (up to 3)
• Content sharing (via Yealink VCD)(1)
• Enhanced DSS key

Corded-Cordless Phone (via DECT Dongle DD10K)

• Up to 4 DECT cordless handsets
• Up to 4 concurrent calls
• Support Yealink W52H/W53H/W56H/DD Phone
• Slave Handset for Master Deskset

IP-PBX Features

• Busy Lamp Field (BLF)
• Bridged Line Appearance (BLA)
• Anonymous call, anonymous call rejection
• Hot desking
• Voice mail
• Flexible seating
• Executive and Assistant
• Call park, call pickup
• Centralized call recording
• Call recording

Directory

• Local phonebook up to 1000 entries
• Blacklist
• XML/LDAP remote phonebook
• Smart dialing
• Phonebook search/import/export
• Call history: dialed/received/missed/forwarded

Feature keys

• 8 line keys with LED
• 8 line keys can be programmed up to 21 various features (3-page view)
• 5 features keys: mute, headset, message, redial, hands-free speakerphone
• 4 context-sensitive “soft” keys
• 6 navigation keys
• Volume control keys
• Illuminated mute/headset/hands-free speakerphone key

Interface

• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), class 2
• 1 x USB port (2.0 compliant)
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port

Management

• Configuration: browser/phone/auto provision
• Auto-provision via FTP/TFTP/HTTP/HTTPS for mass deployment
• Auto-provision with PnP
• Broadsoft device management
• Zero-sp-touch, TR-069
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log

Network and Security

• 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 (TLS1.2)
• HTTPS certificate manager
• AES encryption for the configuration file
• Digest authentication
• OpenVPN, IEEE802.1X
• IPv6, LLDP/CDP/DHCP VLAN, ICE

Other Physical Features

• Color: Classic Grey
• Wall mountable (optional)
• External Yealink AC adapter (optional): AC 100~240V input and DC 5V/1.2A output
• USB output currency: 5V 500mA
• Power consumption (PSU): 1.3W-2.3W
• Power consumption (PoE): 1.8W-3.1W
• Dimension (W*D*H*T): 212mm*210.6mm*174.5mm*41.7mm
• Operating humidity: 10~95%
• Operating temperature: 0~40°C (+32~104°F)

In the box

• Yealink SIP-T53 IP phone
• Handset with handset cord
• Ethernet Cable
• Power adapter
• Stand
• Quick Start Guide