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.
In order to make phone calls via the Internet one’s device has to be compatible with Softphone software. In example in order to call from a PDA using VoIP technology one has to install Softphone software, in order for it to work properly, PDA has to have Softphone compatibility.
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