HP Poly APS-11 Electronic Hookswitch Cable – Remote Call Control for Poly Wireless Headsets & Compatible Desk Phones (85Q78AA)

Tired of grabbing your desk phone handset every time it rings? The HP Poly APS-11 Electronic Hookswitch Cable (85Q78AA) changes that. Pair it with your existing Poly wireless headset and compatible office phone and you get true one-touch call control from anywhere in the room. It’s simple, reliable, and built for the way modern teams actually work.

The Telecom Spot Expert Take As IT hardware specialists who help businesses keep communication seamless, we see the APS-11 as one of those small upgrades that delivers outsized daily wins. It removes the clunky handset lifter entirely, cuts down on repetitive motion, and gives every user the freedom to stay focused on the conversation instead of the phone. TAA compliance makes it a no-brainer for government and enterprise buyers. If you’re already running Poly Savi or CS500 headsets, this cable is the missing link that turns good audio into great workflow.

Key Features

• Instant remote call control – Answer or end desk phone calls with a single button press on your Poly wireless headset.
• No handset lifter required – Completely eliminates the mechanical HL10, reducing desk clutter and maintenance.
• TAA compliant – Meets strict U.S. government and enterprise procurement standards.
• Wide phone compatibility – Works with Siemens OpenStage 40/60/80, OptiPoint series, Aastra/Mitel 67xx and 53xx IP phones, Auerswald COMfortel 2500, Agfeo ST30/31/40, and Funkwerk CS models.
• Easy plug-and-play setup – Two-prong connector to Poly base plus quick switch settings (Configuration = A, listening volume = 3, speaking volume = 2).
• Optional visual alerts – Add the Poly Online Indicator (OLI, sold separately) for clear ring and call-status lights.
• Built for Poly headsets – Optimized for Savi 700 series, CS500/CS500 XD series, Voyager Legend CS, and MDA200 bases.

Technical Specifications

• Poly SKU: 37818-11
• HP SKU: 85Q78AA