Bubbers44 wrote: Contact ground 21 8 eliminates two syllables so that should be the standard because everybody knows what it means.
That can be replaced with Contact Ground Point 8. That sure isn't ICAO standard, but is official FAA phraseology for contacting ground. In the absence of a frequency before the "point," it is assumed to be 121.xxx
It's just a method to make every single syllable count on congested tower frequencies.
Examples:
http://www.faa.gov/regulations_polic...pendix%201.pdf