Poly APC-43 Electronic Hookswitch TAA - 85Q55AAGeneral Information Manufacturer: HP Inc. Manufacturer Part Number: 85Q55AA Manufacturer Website Address: http: www. hp. com Brand Name: Poly Product Model: APC 43 Product Name: APC 43 Electronic Hookswitch TAA Marketing Information: Electronic Hook Switch (EHS) cable eliminates the need for a handset lifter and lets you quickly answer and end calls. Easy to use design makes installing this cable quick and simple. Cable works with Cisco desk phones