Call waiting with “Caller ID” uses a special signal in order to warn you about an incoming call, during another call there are shown the name and number of the calling subscriber on the display. The function also allows switching between two calls.
ZZ is a well-established long distance telecommunications common carrier. ZZ`s strengths are derived from its ability to attract carriers of like interests through aggressively priced routes to difficult international countries and through its high qualit
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