Ringing is a telecommunication signal that causes a telephone to emit a noise (or other signal), indicating an incoming call. Historically, this entailed sending a high-voltage alternating current over the line to a customer’s telephone, which...
In telephony, a ringback tone (also ringback, ringing tone, or audible ringing) is a call progress tone heard by the calling party during a telephone call which indicates the called telephone is ringing. It typically consists of a repeating tone...
Mobile telephony is the provision of Wireless telephone services to mobile phones, distinguishing it from fixed-location telephony provided via landline phones. Traditionally, telephony specifically refers to voice communication, though the...
A ringtone is the sound made by a telephone to indicate an incoming telephone call. Originally referring to the sound of electromechanical striking of bells or gongs, the term refers to any sound by any device alerting of an incoming call. On plain...
A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers. Party line systems were widely used to provide telephone service, starting with the first...
Carrier telephony is a method for carrying several simultaneous long-distance telephone conversations over the same transmission line. Each conversation is shifted to a different frequency band, allowing the channels to share the line by...
A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early telegraphy, magnetos were used to power instruments, while in telephony they were used to...
Bells Are Ringing is a musical with a book and lyrics by Betty Comden and Adolph Green and music by Jule Styne. The story revolves around Ella, who works at an answering service, and the characters that she meets there. The main character was based...