Making Calls55Park call:* You can “park” the current call (see also “Calling …” Menu starting onpage 45).Booking number:* By means of a booking number you can record the call data of aconnection to an external subscriber and save them in the OpenCom 100 / Aastra 800for further analysis. (see also “Calling …” Menu starting on page 45).Call Diversion: You put your current caller on hold and then call another subscriberwith whom you wish to connect your current caller. Enter the call number of the sub-scriber, to whom you wish to transfer the call, announce the call and press the A key.The call has now been transferred. After transfer, you are reconnected with the calleryou originally put on hold.Transfer:* You connect the subscriber on hold with the current subscriber.Conference:* You initiate a three-party conference.Toggle: You toggle (i.e. switch) between the current and previous subscriber.Door opener:* This activates the door opener.Internal/External 3-Party ConferenceYou have dialled an internal or external enquiry call (see the section entitled Enquiry/Toggling by Means of the R-Key starting on page 52).If the subscriber accepts the call, announce the conference and select Conferencefrom the “Subscriber on hold” menu. This initiates the conference.Press the A key to end the conference.NoteYou can connect the two conference participants with each other or disconnect aspecific participant only by selecting the corresponding item from the “Conference”menu. 3-party conference connections are not available.If during the conference you want to talk to the conference participants separatelyagain or disconnect them individually, select the “Conference” menu. Then select …• Disconnect menu item to disconnect a specific subscriber from the conferenceand continue the call with the other participant.• Toggle to end the conference. Both connections are held and you can togglebetween the subscribers using the R key.