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】介绍了邮电部第四研究所研制的CT4无线接入系统。内容包括:系统主要技术特点、网络构成、接续过程及位置登记、主要技术指标等
】 Introduced the fourth Institute of Posts and Telecommunications CT4 wireless access system developed. Include: the main technical characteristics of the system, the network structure, the connection process and location registration, the main technical indicators