obtelecom: the fumes, ash, and particulates from cigarette
> smoke dramatically raise the maintenance requirements at
> any central office using step-by-step switches.
Any electromechanical switch, including crossbar and probably panel, rotary and all-relay. Smoking was prohibited in every swichtroom that I ever went into or heard of.
-- Wes Leatherock snipped-for-privacy@aol.com snipped-for-privacy@yahoo.com