Disclosed herein are methods to improve detection of PET polymer materials within a waste material to be sorted. The circuit card is protected in place by a protective flanges that extends forwardly from the body portion above the circuit card to protect it from stubbing and to provide a means for aligning the plug connector with a receptacle connector. Meeting attendees may be notified when notes are shared for the online meeting. Resistance measurement circuitry is connected to the conductive pattern. Each PBX Feature definition of the ordered set of PBX Feature definitions may define and store a new state of the phone call upon performance of the PBX Feature task.