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综合业务数字网(IntegratedServices Digital Network)一般是以电话综合数字网(IDN,Inte-grated Digital Network)为基础发展演变而成的,它能够提供端到端的数字连接,用来承载包括话音和非话音在内的多种电信业
Integrated Services Digital Network (IntegratedServicesDigitalNetwork) is generally based on the telephone integrated digital network (IDN, Inte-grated Digital Network) evolved, it can provide end-to-end digital connection to carry both voice and non-voice A variety of telecommunications industry