Каталог стандартов

+7 (495) 223-46-76 +7 (812) 309-78-59
inform@normdocs.ru

DIN ETS 300049:1992-08

Отменен
Integrated Services Digital Network (ISDN); ISDN Packet Mode Bearer Services (PMBS); ISDN Virtual Call (VC) and Permanent Virtual Call (PVC) bearer services provided by the D-channel of the user access; basic and primary rate; english version ETS 300049:1992