| QSIG signalling behaviour: IE editionBuffer of IE(s). The buffer can be empty, or composed of one or several
    IE(s). The highlighted IE is the current one, which can be selected from a choice list, or
    used-defined.
 
  Current IE. Editing of the IE type
    
      ( / ) None. No IE is defined. The line is not used.(c/x) designation. The IE is selected from the choice list.(c/x) User defined ie. Values (as codeset and type in the codeset) can be
    manually entered between the brackets. The User defined ie string is
    automatically displayed if the value(s) does not belong to the choice list. . Access to the choice list of IE types for the current
    IE. The O or M eventual attributes indicate that, according
    to the standard, the related IE is Optional or Mandatory.
 Coding. To edit the content of the current IE according to the
    standard encoding fields if any. Hexa. To edit the content of the current IE if any in
    hexadecimal. Up. To move up the current IE within the buffer. Down. To move down the current IE within the buffer. Sort IE. Option to sort the list of IE's. 
   No. The order of the IE(s) within the buffer is not
    modified. Yes.
    The IE(s) within the buffer are sorted. Codeset shifting. Selection of the codeset shifting procedure type:   |