6.3.5.1. LATTR Parameter NOCHDISP 
Setting the LATTR parameter NOCHDISP causes the charge display for
the terminal device to be suppressed.
However, this does not cause the connection to be marked as expensive
in the CDR record EXPENS field of AMO FTBL.
A connection is recorded in the CDR record in the EXPENS field only
if it is identified as expensive by the parameter LSCHED in AMO LDAT.