APC-43 Electronic Hookswitch

The HP Poly APC-43 electronic hookswitch (85Q55AA) is a wired adapter for remote call control with a desk phone. It lets the user answer or end calls through a connected headset setup, without reaching for the phone handset.

The cable-based connection keeps the call-control function tied to the desk-phone setup. The listing identifies Cisco desk phones as compatible, making the APC-43 a practical accessory for supported office phone configurations.