Caller ID
A telephone service available both in digital and analogue systems allows displaying a number of the calling subscriber on the display. And where it is possible the caller’s name can be also lighted up.
Conference phones are meant for holding conferences between three and a
bigger amount of participants. This allows all participants listening and
speaking simultaneously. Usually the conference is begun by the participant
having “Conference Phone”. Other participants call to a special number for a
conference which connects them with “Conference Bridge” that joins all lines
together.
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