Computer software or embedded firmware for the following: recording telephone communications; intercom operation, including doorphone operation; telephone alert operation and telephone ringer operation; operating paging equipment; testing telephone equipment and communications network equipment; connecting headsets to telephones and computers; operating communication systems comprised of a speaker and microphone element (or speaker acting as a microphone) for enabling drive-through customer interaction; operating telephone handsets and headsets; connecting telephone handsets or headsets to computers; operating automated or user interfaces for use in controlling medical beds; operating SIP (session initiation protocol) based intercom and paging systems and audible or visual alerting endpoints; operating voice and video call recording apparatus and systems comprised of network connected devices for audible and visual notification, bell scheduling, voice paging, visual paging, or clocks; operating internet protocol based voice and video intercoms