INTEGRATED SERVICES DIGITAL NETWORK (ISDN); BASIC USER-NETWORK INTERFACE; LAYER 1 SPECIFICATION AND TEST PRINCIPLES. (Endorsed by AENOR in December of 1997.)
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INTEGRATED SERVICES DIGITAL NETWORK (ISDN); BASIC USER-NETWORK INTERFACE; LAYER 1 SPECIFICATION AND TEST PRINCIPLES. (Endorsed by AENOR in December of 1997.)
INTEGRATED SERVICES DIGITAL NETWORK (ISDN); BASIC USER-NETWORK INTERFACE; LAYER 1 SPECIFICATION AND TEST PRINCIPLES. (Endorsed by AENOR in December of 1997.)
INTEGRATED SERVICES DIGITAL NETWORK (ISDN); BASIC USER-NETWORK INTERFACE; LAYER 1 SPECIFICATION AND TEST PRINCIPLES. (Endorsed by AENOR in December of 1997.)
