Phone Features

• 12 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

• 5-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

 - Simultaneous connection of one headset and one mobile phone through BT40

 - Wi-Fi through WF40/WF50

 - Expansion module EXP50 (up to 3)

 - Wireless Headset Adapter EHS40

• USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone, USB connectivity to Yealink UH36 headset:

 - Basic functions: Answer / end, call mute

 - Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls   control

• Content Sharing (via Yealink VCD)

• Enhanced DSS key

Directory

• Local phonebook up to 1000 entries

• Black list

• XML/LDAP remote phonebook

• Smart dialing

• Phonebook search/import/export

• Call history: dialed/received/missed/forwarded

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/CP930W

• Slave Handset for Master Deskset

IP-PBX Features

• Busy Lamp Field (BLF), Bridged Line Apperance (BLA)

• Anonymous call, anonymous call rejection

• Hot-desking, voice mail

• Flexible seating, Executive and Assistant

• Call park, call pickup, call recording

• Centralized call recording

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

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 deploy

• 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

• 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 (TLS1.3)

• HTTPS certificate manager

• AES encryption for configuration file (AES256)

• Digest authentication

• OpenVPN, IEEE802.1X, L2TP VPN

• IPv6, LLDP/CDP/DHCP VLAN, ICE

> WPA2/WPA3

> Secure boot

> GARP (Generic Attribute Registration Protocol)

Other Physical Features

• Color: Classic Grey

• 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: -10~50°C (+14~122°F)

Package Features

• Package content:

 - Yealink SIP-T53 IP phone

 - Handset with handset cord

 - Ethernet Cable

 - Stand

 - Quick Start Guide

• N.W/CTN: 5.8 kg

• G.W/CTN: 6.4 kg

• Giftbox size: 238mm*237mm*103mm

• Carton Meas: 538mm*244mm*250mm