DaveN! Do consider some contingencies if you are placing a trade from work based on a cell phone page. It is a certainty that your CME feed at home will go down, internet connection will drop, IB will glitch.
Sorry for the late reply. I'm one of the AT&T Broadband subscribers that lost service as part of the Excite@Home bankruptcy. Finally, I'm reconnected....
What I was referring to was Tahoe's suggestion that he would be taking trades signaled from his Metastock Pro to his cell phone. It comes through like a paged message. Your phone beeps, you read, then rush over to your order entry system--real time direct access or phone a broker.
I've never called in trades with IB, although I think you can do that for a price (you'll have to check their website for those details.)