Kat penned: "It's just as bad in movie theatres. If one is a doctor or otherwise has to be within reach, they should wear a pager and put it on silent vibrate, then LEAVE the hall to make the call".

My honey has a cell-phone that can be set to vibrate (I believe it is a Sprint PCS). It also takes messages. I would think that a Doctor could afford one of these, set it to vibrate (along with the pager), and, if he absolutely has to take or return the call, he *could* (as you say) go to the lobby.

No denying that having the thing on at all (or on ring if he had a vibrate setting) is rude behaviour. I am still smiling at the conductors solution though!! :D