No title
CCITT
BLUE BOOK,VOLUME VI,FASCICLE VI.10: DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO 1 (DSS1),DATA LINK LAYER - GENEVA ITU 1989 - 141
SC-021
ERNET
335
BLUE BOOK,VOLUME VI,FASCICLE VI.10: DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO 1 (DSS1),DATA LINK LAYER - GENEVA ITU 1989 - 141
SC-021
ERNET
335