Standard No.:	GB/T 7555-1987
English Name:	General characteristics complying with the network performance objectives for 12 channel carrier telephone systems on open-wire pairs
Chinese Name:	明线12路载波系统进网特性要求
Chinese Classification:	M19    Telecommunication technical requirements and interface
Professional Classification:	GB    National Standard
ICS Classification:	33.040.40 33.040.40    Data communication networks 33.040.40
Issued by:	SAC
Issued on:	1987-03-26
Implemented on:	1987-1-1
Status:	abolished
Abolished on:	2005-10-14
Language:	English
File Format:	PDF
Word Count:	2500 words
Price(USD):	220.00
Delivery:	via email in 1~3 business day

本标准适用于长途通信网中明线12路载波系统，是制订设备标准，施工设计规范和维护规程的主要依据。本标准规定了系统进网时必须具备与统一的基本特性要求和接口特性要求。