GJB 2224.4-1994
Test methods for technical indicators of signals of automatic telephone switching network Test methods for technical indicators of ring current and signal tone (English Version)

Standard No.

GJB 2224.4-1994

Language

Chinese, Available in English version

Release Date

1994

Published By

Military Standard of the People's Republic of China-General Armament Department

Latest

GJB 2224.4-1994

GJB 2224.4-1994 history

• 1994 GJB 2224.4-1994 Test methods for technical indicators of signals of automatic telephone switching network Test methods for technical indicators of ring current and signal tone