Abstract: The connection arrangement according to the present invention is primarily intended to connect a loudspeaking device instead of the normal lowspeaking device (receiver in the handset) in a telephone instrument of the "DIAVOX" type. The arrangement includes an extra push button (1) mounted on a circuit card (22) in the instrument. A cam shaft relay (4, 5), known per se, is mounted near the push button support (1e) and on the card. The cam shaft relay is provided with a control member (5) having a first position which corresponds to the rest state of the instrument. Under the influence of the hook switch plunger (18) of the instrument, the control member (5) can be set to a second position corresponding to the lowspeaking state. The push button is provided with tipping element (2) which, when the button is depressed, actuates the control member (5) to set it to a third position corresponding to the loudspeaking state of the instrument.

Abstract: PCT No. PCT/SE 78/00061 Sec. 371 Date June 24, 1979 Sec. 102(e) Date May 31, 1979 PCT Filed Oct. 18, 1978 PCT Pub. No. W079/00227 PCT Pub. Date May 3, 1979A fastening arrangement for one or more circuit cards in a telephone instrument having a housing comprising a base plate with walls around the perimeter of the housing extending substantially perpendicular to the base plate and a rear casing which has a planar surface extending perpendicular to the base plate and directed towards the front of the instrument. Supporting elements are mounted on the planar surface and have the form of projections with grooves to receive a circuit card. The front wall of the base plate carries supporting elements for the circuit cards.