2004YD/T 1323-2004 Access Network Technical Requirements - Asymmetric Digital Subscriber Line (ADSL)
1998YDN 078-1998 Access Network Technical Requirements Asymmetric Digital Subscriber Line (ADSL) (Internal Standard)
YDN 078-1998 Access Network Technical Requirements Asymmetric Digital Subscriber Line (ADSL) (Internal Standard) was changed to YD/T 1323-2004 Access Network Technical Requirements - Asymmetric Digital Subscriber Line (ADSL).