Modest Design, Easy-to-Use User Interface，Built-in Battery, Wi-Fi and DECT to Minimize Deployment Costs，HD Audio, Smooth Communication，Rich Features and 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

• 4-inch multi-touch screen with 480x800 resolution • Optima HD voice, full duplex technology • Yealink Noise Proof Technology • Built-in Bluetooth 4.2 • Built-in Wi-Fi (2.4GHz/5GHz, 802.11a/b/g/n) • Wi-Fi and DECT mode switchable (Switch via one-touch) • Built-in battery • Up to 15-hour talking time (in ideal conditions) • Up to 167-hour standby time in DECT mode (in ideal conditions) • 4-hour charging time • 20-foot (6-meter) and 360-degree microphone pickup range • Built-in 6-microphone array for voice pickup • 5-way conference call • Support to connect with a Bluetooth expansion microphone CPW25 • Hybrid UC meeting

• 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)