Doh, I missed the part with PA, security and phone, thats NOT cool...... Not safe either. Phone could carry 480 outside the facility.
Only Power-limited fire alarm from what I can see off the top of my head can do this in limited situations.
As for the Industrial situation.... Unless the site is exempt somehow from building codes. There are a few types of industry that are, others can tell you what they are.
[This message has been edited by e57 (edited 03-22-2005).]
