Most of the mistakes occurred as substitutes filled in for vacations and illness of regular carriers, he said.

Why not check prices against a regular carrier?

When you do this at holidays and school vacation times, these become cheaper than going with regular carriers.

It is often a saving to use a cell phone instead of the hotel phone for access to a much cheaper regular carrier.

The problem is compounded when the regular carrier takes a day off and a substitute unfamiliar with the territory is sent in.

They're running an encrypted tunnel inside of the regular carrier.

Also note that in peak seasons, the gap in prices between regular and budget carriers starts to close up.

Our back five are all regular carriers, handling 15 to 20 times a game.

Expect to pay more than double for a regular carrier.