This first edition of chapter 715 of the International Electrotechnical Vocabulary (IEV) deals with basic terms, resources, calls, times and delays, traffic and traffic engineering, circuit groups, and networks for telecommunication.
BS IEC 60050-715:1997 История
1997BS IEC 60050-715:1997 Международный электротехнический словарь. Сети телекоммуникаций, телетрафик и эксплуатация