Standard No.:	GB/T 3972-1992
English Name:	Relays for crossbar telephone switching systems
Chinese Name:	纵横制电话交换机继电器
Chinese Classification:	M40    Telephone communication equipment
Professional Classification:	GB    National Standard
Issued by:	SBTS
Issued on:	1992-10-06
Implemented on:	1993-5-1
Status:	abolished
Abolished on:	2005-10-14
Superseding:	GB 3972-1983
Language:	English
File Format:	PDF
Word Count:	21500 words
Price(USD):	1824.00
Delivery:	via email in 1~5 business day

本标准适用于PR101型、JTX型和JR14型继电器；这三种型号的继电器主要作为纵横制电话交换机的控制件使用，也可供其他交换机、其他通信设备和自动控制装置使用。