ETSI ETS 300 358 : Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber (CCBS) Supplementary Service; Functional Capabilities and Information Flows
سازمان: ETSI - European Telecommunications Standards Institute
سال: 1995
زبان: English
قیمت: 55000 تومان
افزودن به سبد خرید