When AT&T was forced by law to allow MCI switching equipment in their facilities, they tended to leave that room's window open, so pigeons could nest in the equ

When AT&T was forced by law to allow MCI switching equipment in their facilities, they tended to leave that room's window open, so pigeons could nest in the equipment. (I might have a detail wrong, this and a hundred other great telecom anecdotes are in The Master Switch.) Always nice to make sure no parties you depend on have conflicting interests.