
BUSINESS TELECOMMUNICATIONS (BTC); 64 KBIT/S DIGITAL UNRESTRICTED LEASED LINE WITH OCTET INTEGRITY (D64U) - TERMINAL EQUIPMENT INTERFACE
出版:European Telecommunications Standards Institute

专家解读视频
Specification of the terminal equipment side of the interface and test procedures for compliance.
DIN ETS 300290 : 1994 - Identical
PN ETS 300 290 : 2005 - Identical
UNE ETS 300290 : 1999 - Identical
NF ETS 300 290 : 1995 - Identical