several embodiments examples of which are illustrated in the accompanying figures it is noted that wherever practicable similar or like reference numbers may be used in the figures and may indicate similar or like functionality the figures depict embodiments of the disclosed system or method for purposes of illustration only one skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles described herein fig1 illustrates a prior art mobile telephone 100 the mobile telephone 100 comprises a screen 102 a numeric keypad 104 directional cursor buttons 110 112 116 118 a center select button 114 a u201c communicate u201d button 106 and a cancel button 108 the screen 102 of mobile telephone 100 illustrated in fig1 is displaying a graphical user interface gui comprising a list of seven contacts 122 with which a user of the mobile telephone can set up a ptt call associated with each contact 122 is a check box 120 the contacts 122 are shown on the screen 102 in response to a user opening a ptt application program on the mobile telephone 100 the user of.