Features: Mid-level phone, ideal for professionals and managers with moderate call load
4.3" 480x272-pixel color display, fully adjustable
HD Voice with Yealink Acoustic Shield technology
10 line keys, 16 SIP accounts, 27 memory keys
Built-in Bluetooth, Wi-Fi
Dual-port Gigabit Ethernet
1xUSB port for call recording and wireless USB headset
Power supply not included
Protocols: LLDP-MED for VLAN discovery; IPv4; TCP (RFC 793) in SSL/TLS; Domain Name System (DNS): A records (RFC 1706), SRV records (RFC 2782), RTP (RFC 1889, 1890), RFC 5966
Security: HTTPS secure provisioning; Local Access Interface: IVR password