Technical requirements to the air interface of the wideband radio access system (WBRAS). The organization of protocols and algorithms of work on data link and physical levels. Main parameters and technical requirements
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations. Part 21. Particular requirements for boxes and enclosures with provision for suspension means
Modular order for the development of mechanical structures for electronic equipment practices. Part 2. Sectional specification. Interface coordination dimensions for the 25 mm equipment practice
