Well, thanks for your reply, my question is about getting clearance when you are flying VFR and pretend to enter and transit a class B aerospace. My departure airport is non towered so I contact a FSS (Utopia radio) and open a VFR flight plan. Then I change frequency to ctaf/unicom, take off and leave the area. Then I change to "Regional Approach" (this is the frequency of the airport which B airspace I want to transit) and I inform my position, altitude and destination. Approach gives me a squawk code, and the altimeter setting and transit advisories. But gives me no clearance to enter B airspace. Maybe is an issue (still) not covered by VoxAtc.