JadedTraveler, are you saying your corp rate has TWO corp rates - ie, one corp rate for online & one for 800#?
I've worked for a lot of F50 & F500 co's & the negotiated corp rate was the rate, regardless of the method of booking. I've never heard of a company negotiating an online corp rate & a phone corp rate - not saying it can't happen, but I've never experienced it.
However, I HAVE gotten better rates, both online & via 800#, by doing side-by-side comparisons - what's the corp rate, aaa rate, weekend rate. Sometimes corp better; sometimes the others are.
Cheers. Sharon