G'day
mustafa maaate!
The charts often refer to "channel nn" in the VOR or ILS box and this channel is the DME.
In the "old" days in Oz, the "nn" referred to the Domestic DME channel number that could be independently selected on the old 200 Mhz DME box. These days, about the only reference I can think of for that is the TACAN channel number.
AFAIK this can only be independently selected by the military.