YD/T 344-1990
Requirements for PABXs access to public telephone switching network (English Version)

Standard No.

YD/T 344-1990

Language

Chinese, Available in English version

Release Date

1990

Published By

Professional Standard - Post and Telecommunication

Latest

YD/T 344-1990

YD/T 344-1990 history

• 1990 YD/T 344-1990 Requirements for PABXs access to public telephone switching network