Using the Aastra 6739i6Using the Aastra 6739iTelephoningMaking Calls1. In order to establish a connection,– pick up the handset or– press the handsfree key , to make the following call in the handsfreemode (see Handsfree / Open-Listening Mode starting on page 11).2. Dial a call number:– Enter the call number using the number keys. Press the Dial softkey.– Or: Press the redial key to call back a previously dialled call number. Usethe navigation keys to browse the list. Press the softkeynext to the desired entry or pick up the handset.– Or: Press the function key with the phone book function (please refer toPhone book starting on page 14). This function is for selecting a call numberfrom the phone book of the OpenCom 1000 communications system.The display shows a picture (photo) of the called subscriber if an image has beensaved on the OpenCom 1000 communications system (please refer to page 31).Calling with Selective Line SeizureIf multiple trunk keys are configured for your telephone, you can seize a line selec-tively.1. Press a trunk key / / to seize a specific line.2. Dial a call number (see page 6).NoteIf the administrator has linked a trunk key / / with a SIP useraccount, you will be calling under the call number of the SIP user account. If thetrunk key is not linked, the call number of trunk key 1 is used.