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ÖNORM EN 300403-1 V 1.3.2:2000-02
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Signalling network layer for circuit-mode basic call control - Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]
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Разработчик:
Зарубежные/ON
ICS:
33.080 Integrated Services Digital Network (ISDN) / Цифровая сеть связи с интеграцией служб (ISDN)
Описание
The procedures currently described in this Recommendation are for the control of circuit-switched connections, user-to-user signalling connections and packet-switched connections. The transport of
other message-based information flows on the D-channel is a subject for further study and will be included in related Recommendations.
NOTE 1 The term "layer 3" is used for the functions and protocol described in this Recommendation (see Recommendation Q.930/I.450). The terms "data link layer" and "layer 2" are used interchangeably to refer to the layer immediately below layer 3.
NOTE 2 Alignment of the functions and protocol with those of OSI network layer is for further study.
Ключевые слова:
DSS1, Protokoll, Spezifikation, digital, Begriffe, Terminologie, Schaltung, Schicht, Kommunikationstechnologie, Nachrichtentechnik, Fernmeldetechnik, Informationsverarbeitung, Datenverarbeitung, Telekommunikation, ISDN, Netzwerk, Teilnehmersystem, Funksystem