Technical requirements and test methods for toll connecting boards and special boards in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Technical requirements and test methods for toll service boards (toll recording boards, enquiry deaks)in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Technical requirements and test methods for service observation desks (quality checking desks) in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Technical requirements and test methods for monitordesks in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Technical requirements and test methods for exchangers of operating services in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Technical requirements and test methods for relays in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Technical requirements and test methods for ringing, power sources, alarm and distribuing frame in manual toll telephone switching equipments

WITHDRAWN published on 1.1.1988

Photographic facsimile apparatus--Specifications

WITHDRAWN published on 13.4.1988

Photographic facsimile apparatus--Measuring methods

WITHDRAWN published on 13.4.1988

Test chart for newspaper page facsimile

WITHDRAWN published on 1.1.1988