YDN 034.4-1997
ISDN subscribers - specification for network interfaces. Part 4 Technical specifications for supplementary services (internal standard) (English Version)
Home
YDN 034.4-1997
Standard No.
YDN 034.4-1997
Language
Chinese,
Available in English version
Release Date
1997
Published By
Professional Standard - Post and Telecommunication
Latest
YDN 034.4-1997
YDN 034.4-1997 history
1997
YDN 034.4-1997
ISDN subscribers - specification for network interfaces. Part 4 Technical specifications for supplementary services (internal standard)
Copyright ©2023 All Rights Reserved