| 摘要 |
PCT No. PCT/EP89/00569 Sec. 371 Date Feb. 15, 1991 Sec. 102(e) Date Feb. 15, 1991 PCT Filed May 23, 1989 PCT Pub. No. WO89/12944 PCT Pub. Date Dec. 28, 1989.It is described a wide band communication system suitable to allow the exchange of audio signals, video signals and data among a plurality of users (U1, U2, . . . , Ui), either the same are abutted to a same switching node (NC) or to switching nodes distant among them from the geographical point of view. Solutions suitable to allow a particularly simple and economic realization of the means for the control of the signalling relevant to the video link, suitable to allow a particularly simple and cheap realization of the switching matrix, as well as to align audio signals to video signals are foreseen (FIG. 2).
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