Actually it says that you must attempt to contact ATS on VHF or HF, and if that doesn't work, broadcast and contact them airborne, provided that for RPT, charter or airwork ops, you have radio contact with your company which has access to a phone, or other than RPT you can nominate a SARTIME for departure with a max of 30 mins from ETD.
That's how I understand it. So on a charter for example, in the middle of no where with no radio contact to company and no SARTIME for departure.......you cant legally go anywhere.
