ETS 300 012-1 : 20002现行
INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - BASIC USER-NETWORK INTERFACE (UNI) - PART 1: LAYER 1 SPECIFICATION
出版：European Telecommunications Standards Institute
专家解读视频
This issue incorporates the test suite specification and referenced materials from ITU-T I.430.
I.S. ETS 300 012-1:1999 - Identical
NBN ETS 300 012 1 : 1999 - Identical
PN ETS 300 012-1 : 2005 - Identical
PN ETS 300 012-1 : 2005 - Identical
NBN ETS 300 012 1 : 1999 - Identical
