Standard No.:	GB 3379-1982
English Name:	Interoffice direct signalling system for telephone automatic switching network
Chinese Name:	电话自动交换网局间直流信号方式
Chinese Classification:	M12    Communication network number, signal and connection
Professional Classification:	GB    National Standard
ICS Classification:	33.040.30 33.040.30    Switching and signalling systems 33.040.30
Issued by:	MIIT
Issued on:	1982-01-02
Implemented on:	1983-10-1
Status:	abolished
Abolished on:	2005-10-14
Superseding:	作废
Language:	English
File Format:	PDF
Word Count:	11000 words
Price(USD):	570.0
Delivery:	via email in 1~5 business day

本标准规定我国电话自动交换网纵横制局间及其与其他指定制式局间的直流信号和相关技术指标。本标准所用中继方式示意图只作为示意，所用文字符号按GB 315-64《电工设备文字符号编制通则》规定的第一种组合格式编写，第一次出现均加文字说明。局间直流信号包括线路信号和数字信号。线路信号表现为直流极性标志，数字信号表现为直流脉冲。