The big PSTN switch-off is due in 2027 which means that the old copper PSTN phone network will stop supporting telephone calls. Digital Voice (using VoIP technology – Voice over Internet Protocol) ...

Also called a 3.5mm or 1/8" connector, it is a plug and socket widely used for analog audio signals in portable devices. For example, the headphone jack on iPods, tablets and portable DVD players is a ...