telephone

• telephone exchange (telephone switch, or central office, מרכזייה)

• Plain old telephone service (POTS)

• public switched telephone network (PSTN)

  • circuit-switched

• telephone switchboard

• rotary dial (טלפון חוגה)

• Dual-tone multi-frequency (DTMF) signaling

  • 1963

• push-button telephone

• electronic switching system (ESS)

• Voice over Internet Protocol (VoIP) (or IP telephony)

• VoIP phone (or IP phone)

• vocoder