Outstanding User Experience• HD Audio• Wireless Transmission• High Expandability

• No Perception Upgrade • Sync Level1 Base Backup • Headsets Registration • Security & Stability • Advanced DECT Contacts • Efficient Provisioning & Unified Management • Easy Setup and Deployment • Compatible with Multiple Devices

• 7” 800 x 480 capacitive adjustable touch screen • Adjustable LCD screen • Dual firmware images • T53/T53W/T54W/T57W firmware unified • Built-in Bluetooth 4.2 • Built-in dual band 2.4G/5G Wi-Fi (802.11a/b/g/n) • USB 2.0 port for USB recording, wired/wireless USB headsets and EXP50 • Up to 16 VoIP accounts • Dual-port Gigabit Ethernet • PoE support • HAC Handset • Paperless label design • Wall mountable

• Seamless handover and roaming •Up to 100 parallel calls •Up to 30 base stations •Up to 100 handsets • Up to 100 SIP accounts • Support XML/LDAP/Remote Phonebook • Support Xsi Directory • DECT radio coverage up to 50 m indoors and 300 m outdoors • Support IPv6 • Support PoE • DECT Technology: Yealink DECT technology focuses on high-quality Audio VoIP (wideband) and low-bit-rate data applications. However, we are incompatible with third-party DECT devices (base station, handset, etc.). • Compatible with Yealink W56H/W53H (version x.85.0.45 or later), W73H (version 116.85.0.25 or later), W78H (version 16.85.0.5 or later), CP930W (version 87.85.0.45 or later), W59R (version 115.85.0.45 or later), W57R (version 118.85.0.5 or later), CP935W (version 149.86.0.10 or later), T54W+DD10K (version 96.85.0.95 or later) and DD Phone (version 66.84.0.115 or later)