ETSI ETS 300 009 ed.1 (1991-12)

SLOVENSKI STANDARD
SIST ETS 300 009 E1:2003
01-december-2003

Digitalno omrežje z integriranimi storitvami (ISDN) – Sistem signalizacije CCITT št.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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Foreword .......................................................................................................................................................5

1 Scope ..................................................................................................................................................7

2 Normative references..........................................................................................................................7

3 Symbols and abbreviations .................................................................................................................7

4 Exceptions to CCITT Recommendations Q.711 to Q.714 ..................................................................8

4.1 General ................................................................................................................................8

4.1.1 Routing ............................................................................................................8

4.1.2 Address Information ........................................................................................8

4.1.3 Management procedures ................................................................................8

4.2 Protocol classes...................................................................................................................9

4.2.1 Protocol classes 2 & 3.....................................................................................9

4.2.2 Load sharing....................................................................................................9

5 Additions to CCITT Recommendations...............................................................................................9

5.1 SubSystem Number (SSN) allocation..................................................................................9

History..........................................................................................................................................................10

This European Telecommunication Standard (ETS) has been produced by the Signalling Protocols and

Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI),

as working document T/S 43-03, and was adopted having passed through the ETSI standards approval

This ETS is based on CCITT Recommendations Q.711 [1] to Q.714 [4] as recommended in the CCITT

Blue Book, 1988. The requirements of these CCITT Recommendations apply unless modified by the

exception statements contained in Clause 4 of this ETS. In addition, the standard includes the specific

This ETS is also based on the following assumptions concerning the interconnection of national Signalling

- the Message Transfer Part (MTP) specified in ETS 300 008 [6] supports the SCCP for international

- at present, no SCCP users (subsystem) have been identified in the international network and,

therefore, no need exists for management messages to be originated or terminated. However,

Unitdata messages containing management information should be carried in the international

- a global title including the country code, is required for routing in the international network. The

global title format of CCITT Recommendation Q.713 [3], § 3.4.2.3.4, is to be used (Global Title

The scope of this ETS is the further development of the CCITT Signalling System No. 7 protocols for both

the Integrated Services Digital Network (ISDN) and Public Switched Telephone Network (PSTN) following