Abstract: Known telecommunication systems comprising a switch and terminals having a display+video codec for displaying video and an audio tranceiver for transceiving audio and comprising a detector for a detection of a telephone call going on between a first and a second terminal, can offer more user possibilities by providing said telecommunication system with a transmitter for, in response to said detection and an activation signal, transmitting video displayed at said first terminal to said second terminal for being displayed there as well. So, while a user of said first terminal is watching video, which video either originates at said first terminal or arrives via said switch after being generated by an external video source, said user of said first terminal has got the possibility (activation signal) of allowing an other user of said second terminal (who for example made said call) to also watch said video.

Abstract: The compounds of the formula wherein the symbols R1, R2, R3 and R4 represent, independently of one another, a hydrogen atom or a linear or branched, saturated or unsaturated C1 to C3 lower alkyl radical, are advantageous as perfuming ingredients for the preparation of perfuming compositions and perfumed articles, to which they impart odoriferous notes of the lily of the valley type.

Abstract: The compounds of formula ##STR1## wherein symbol X designates a C.dbd.O (Ia) or C(CH.sub.3)--OC(O)CH.sub.3 (Ib) group and the dotted line indicates the location of a single or double bond in formula (Ia) and of a double bond in formula (Ib), are characterised by useful odor notes of the aromatic, fruity, even amber type and can as a result be advantageously used as active perfuming ingredients.