| 摘要 |
<p>This private branch exchange (1) includes a park portion (14) capable of parking a call put through to a telephone terminal unit (2) via a terminal connection portion (12,13) and a control portion (16) controlling the park portion, when a nuisance call a.k.a. SPAM or SPIT from the public telephone network (200) is put through to the telephone terminal unit via the terminal connection portion, to park the nuisance call on the basis of a prescribed operation of the user i.e. pushing a button or entering a feature code against the nuisance call.
In the case that the called party indicates that the received call is indeed a nuisance call, the caller-ID is added to a list (S9, i.e. a black list) for future blocking (S1,S2).</p> |
