This is the recommended upgrade to the SIP-t42S

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