Phone Features

• 16 VoIP accounts         

• One-touch speed dial, hotline 

• Call forward, call waiting, call transfer 

• Mute, DND, call hold, redial, call return, auto answer   

• Group listening, SMS, emergency call  

• 10-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)      

• Built-in dual band Wi-Fi:            

 - Network standard: IEEE802.11a/b/g/n

 - Transmission rate: Up to 433Mbps (dynamic)  

 - Frequency range: 2.4GHz/5.0GHz

• Built-in Bluetooth for:

 - Bluetooth headset,     

 - Mobile contacts synchronization

 - Bluetooth call

 - Simultaneous connection of one headset and one mobile phone            

• USB port (2.0 compliant) for:  

 - Wired/wireless USB headset   

 - USB call recording through USB flash drive        

 - Color-screen expansion modules 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: dialled/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   

• Centralized call recording, call recording             

Display and Indicator

• 7" 800 x 480 capacitive adjustable touch screen             

• LED for call and message waiting indication      

• Dual-color (red or green) illuminated LEDs for line status information   

• Wallpaper       

• Intuitive user interface with icons and soft keys              

• Multilingual user interface        

• Caller ID with name, number and photo            

• Screensaver   

• Power saving 

Feature keys

• 29 one-touch DSS keys               

• 7 feature keys: hold, transfer, message, headset, mute, redial,   speakerphone                    

• Volume control keys   

• Illuminated mute/headset/hands-free speakerphone key           

Interface

• Dual-port Gigabit Ethernet       

• Power over Ethernet (IEEE 802.3af)     

• 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 (TLS 1.3)

• HTTPS certificate manager       

• AES encryption for configuration file (AES256)

• Digest authentication using MD5/MD5-sess    

• 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): 3.2W-6.3W              

• Power consumption (PoE): 4.0W-7.8W

• Dimension (W*D*H*T): 259.4mm*220mm*211mm*44.5mm

• Operating humidity: 10~95%  

• Operating temperature: -10~50°C (+14~122°F)

Package Features

• Package content:         

 - Yealink SIP-T57W IP phone      

 - Handset with handset cord      

 - Ethernet Cable              

 - Stand

 - Quick Start Guide         

• N.W/CTN: 8.86 kg        

• G.W/CTN: 9.79 kg        

• Giftbox size: 324 mm*293 mm*128 mm            

• Carton Meas: 680 mm* 303 mm*342 mm