ITU-T Recommendation E.120 Telephone network and ISDN. Operation, numbering, routing and mobile service. Instructions for users of the international telephone service

ITU-T Recommendation E.118 Series E: Overall network operation, telephone service, service operation and human factors. International operation – General provisions concerning Administrations. The international telecommunications charge card ITU-T Recommendation E.117 Telephone network and ISDN. Operation, numbering, routing and mobile service. Terminal devices used in connection with the public telephone service (other than telephones) РМД 31-04-2008 Санкт-Петербург Рекомендации по строительству жилых и общественных высотных зданий ITU-T Recommendation E.121 Series E: Overall network operation, telephone service, service operation and human factors. International …– General provisions concerning users. Pictograms, symbols and icons to assist users of the telephone and telefax ... Рекомендация МСЭ-Т Е.121 Серия Е: Общая эксплуатация сети, телефонная служба, функционирование служб и человеческие факторы. Международная эксплуатация – Общие положения, касающиеся пользователей. Пиктограммы, символы и графические знаки в помощь ... ITU-T Recommendation E.122 Telephone network and ISDN. Operation, numbering, routing and mobile service. Measures to reduce customer difficulties in the international telephone service