Cisco CP-8851-K9=

Cisco IP Phone 8851
The Cisco® IP Phone 8851 is a business-class collaboration endpoint that combines high-fidelity, reliable, secure, and scalable voice over IP communications with Cisco Intelligent Proximity for telephony integration for personal mobile devices to support small to large enterprise businesses.
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-8800-series/datasheet-c78-731667.html?dtid=osscdc000283
https://www.cisco.com/c/en/us/products/collaboration-endpoints/ip-phone-8851/index.html?dtid=osscdc000283