Abstract: The invention relates to a control apparatus (AGNT), a telecommunication system (SYS), a control method and a subscriber station (SS1, TE, MT; SS2, TE, MT; SS3, TE, MT) wherein a call set-up request issued by a first subscriber station (SS1) is blocked from a transfer to a telecommunication network (NET) as long as the second subscriber station (SS2) to which a call should be set-up is in a busy state. The control apparatus (AGNT) only transfers the call set-up request to the exchange means (MSC/VLR, GMSC, HLR) of the telecommunication network (NET) when the called second subscriber station (SS2) changes from a busy state into an idle state. Thus, the network resources are not occupied by call set-up requests which would be rejected due to the second subscriber station (SS2) being in a busy state. The invention is particularly advantageous when the calling subscriber station (SS1) uses a re-dial function to repeat a call set-up request.

Abstract: A method and means for generating a connection correlation identifier (CCID) in multiconnection calls over broadband networks is provided. Signalling with the CCID takes part at the users interface. The connection correlation identifier coordinates the individual connections with the respective multiconnection call. The CCID includes two parts, and originating part (OCCID) and a destination part (DCCID), where the OCCID is generated at the calling party and where the DCCID is generated at the called party.