市内电话的特种服务计量电信和人类发展密切相关，近年来上海电信事业发展迅猛，全市交换机总容量突破１００万门大关，达到１０９．６万门（其中程控交换机占７６％），标志着上海电话发展在数量和质量上正在接近世界先进水平。为满足社会不同层次用户的通信需要．发展和... Special service for local telephone measurement Telecommunications and human development are closely related to the rapid development of Shanghai Telecom industry in recent years, the city’s total switch capacity exceeded 1 million gate, reaching 10.96 million (of which program-controlled switches accounted for 76%), marking Shanghai’s telephone development is approaching the world advanced level in quantity and quality. To meet the different levels of social needs of users of communications. Development and ...