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DIN ETS 300097-1:1992-11

Отменен
Integrated Services Digital Network (ISDN); Connected Line Identification Presentation (COLP) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification; english version ETS 300097-1:1992
DIN ETS 300097-1:1992-11
Отменен