Division 533: Large Business Systems (PBXs) Customer Premises Systems and Customer Services Provided by ESS Switches

Section Date Issue Size Title

533-000-000 1980-03-01 16 113.43 KB Numerical Index - Division 533 - Customer Premises Systems (ESS Provided Customer Services)
533-101-100 1980-01-01 1 2.89 MB 50B Customer Premises System (CPS) - Theory of Operation and Descriptive Information

Section	Date	Issue	Size	Title
533-000-000	1980-03-01	16	113.43 KB	Numerical Index - Division 533 - Customer Premises Systems (ESS Provided Customer Services)
533-101-100	1980-01-01	1	2.89 MB	50B Customer Premises System (CPS) - Theory of Operation and Descriptive Information