GB 3380-1982
Ringing and tone for telephone automatic switching network (English Version)

Standard No.

GB 3380-1982

Language

Chinese, Available in English version

Release Date

1982

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB 3380-1982

Scope

This standard stipulates the ring current and signal tone standards of my country's automatic telephone switching network and municipal switching equipment, and unifies the signal tone sending location. This standard applies to crossbar (or quasi-electronic) switching equipment and other standard equipment indicated in the standard.

GB 3380-1982 history

• 1982 GB 3380-1982 Ringing and tone for telephone automatic switching network