1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 1 TELECOMMUNICATION (03/93)STANDARDIZATION SECTOROF ITU).4%27/2+).G0G07)4(G0G03!4%,)4%-/“),%G0G03934%-3).4%27/2+).G0G07)4(G0G034!.$!2$G0G0!).-!23!4G0G03934%-G0G0 G0G03425#452%G0G0/&G0G04(%2%#/-%.$!4)/.3G0G0/.G0G04(%G0G0).-!23!4-/“),%G0G03!4%,)4%G0G03934%-
2、3)45G134G0G0RecommendationG0G01 (Previously “CCITT Recommendation”)FOREWORDThe ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom-munication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuingRecommend
3、ations on them with a view to standardizing telecommunications on a worldwide basis.The World Telecommunication Standardization Conference (WTSC), which meets every four years, established thetopics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics.ITU
4、-T Recommendation Q.1100 was revised by the ITU-T Study Group XI (1988-1993) and was approved by theWTSC (Helsinki, March 1-12, 1993)._NOTES1 As a consequence of a reform process within the International Telecommunication Union (ITU), the CCITTceased to exist as of 28 February 1993. In its place, th
5、e ITU Telecommunication Standardization Sector (ITU-T) wascreated as of 1 March 1993. Similarly, in this reform process, the CCIR and the IFRB have been replaced by theRadiocommunication Sector.In order not to delay publication of this Recommendation, no change has been made in the text to reference
6、s containingthe acronyms “CCITT, CCIR or IFRB” or their associated entities such as Plenary Assembly, Secretariat, etc. Futureeditions of this Recommendation will contain the proper terminology related to the new ITU structure.2 In this Recommendation, the expression “Administration” is used for con
7、ciseness to indicate both atelecommunication administration and a recognized operating agency. ITU 1993All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic ormechanical, including photocopying and microfilm, without permission in writ
8、ing from the ITU.Recommendation Q.1100 (03/93) iCONTENTSRecommendation Q.1100 (03/93)Page1 General . 12 Terminology. 13 Overview of Recommendations . 23.1 Recommendation Q.1101 . 23.2 Recommendation Q.1102 . 23.3 Recommendation Q.1103 . 23.4 Recommendation Q.1111 . 23.5 Recommendation Q.1112 . 23.6
9、Recommendation Q.1151 . 23.7 Recommendation Q.1152 . 2Recommendation Q.1100 (03/93) 1Recommendation Q.1100Recommendation Q.1100 (03/93)INTERWORKING WITH STANDARD A INMARSAT SYSTEM STRUCTURE OF THE RECOMMENDATIONS ON THEINMARSAT MOBILE SATELLITE SYSTEMS(Melbourne, 1988, modified at Helsinki, 1993)1 G
10、eneralThis Recommendation gives an overview of those in the Q.1100-Series for interworking between the internationalpublic switched telephone network/ISDN and the INMARSAT mobile satellite systems. It also contains definitions ofthe terminology used in these Recommendations.The interworking of all I
11、NMARSAT standard systems with the PSTN/ISDN is based on a common set of principles.However, due to the differences between the various INMARSAT standard signalling systems, the specific interworkingprocedures for each particular INMARSAT standard system is unique.2 TerminologyFor the purpose of this
12、 Recommendation, the following definitions apply:2.1 aeronautical (ground) earth station (GES): An earth station in the fixed-satellite service or, in some cases,in the aeronautical mobile-satellite service, located at a specified fixed point on land to provide a feeder link for theaeronautical mobi
13、le-satellite service (see Radio Regulations, Article 1).2.2 aircraft earth station (AES): A mobile earth station in the aeronautical mobile-satellite service located onboard an aircraft (see Radio Regulations, Article 1).2.3 mobile satellite switching centre (MSSC): Indicates the signalling interwor
14、king point between the fixednetworks and the mobile satellite system which works to a single ocean area. The MSSC may be located at the antennasite of the aeronautical ground earth station or coast earth station, in which case it may operate as an independentinternational switching centre (ISC) conn
15、ected to one or more ISCs, on national switching centres. It may also be locatedremotely from the antenna site, as a supplement to, or a part of an ISC. The term MSSC may also indicate a maritimesatellite switching centre, with an identical functional definition to the above.2.4 international switch
16、ing centre (ISC): The exchange (at the end of an international circuit) which switchescalls destined to or originating from another country.2.5 ship earth station (SES): A station in the maritime mobile satellite service intended to be used while inmotion or during halts at unspecified points and wh
17、ich is located on board a ship (see Radio Regulations, Article 1).2.6 integrated services digital network (ISDN): An integrated digital network in which the same digital switchesand digital paths are used to establish connections for different services, such as telephony, data, and so on (see theI-S
18、eries Recommendations).2.7 telephone user part (TUP): This defines the necessary telephone signalling functions for use of SignallingSystem No. 7 (SS No. 7) for international call control signalling. It is specified with the aim of providing the samefeature for telephone signalling as other CCITT te
19、lephone signalling systems (see Recommendation Q.721).2.8 ISDN user part (ISUP): This encompasses the signalling functions in SS No. 7 required to provide switchedservices and user facilities for voice and non-voice applications in an ISDN (see Recommendation Q.761).2 Recommendation Q.1100 (03/93)2.
20、9 signalling connection control part (SCCP): This provides in SS No. 7 additional functions to the messagetransfer part to cater for both connectionless as well as connection oriented network services, to transfer circuit related,non-circuit related signalling information, and other types of informa
21、tion between exchanges and specialised centres intelecommunication networks (see Recommendation Q.711).2.10 coast earth station (CES): An earth station operating in the fixed satellite service frequency bands or, in somecases, in the maritime mobile-satellite service frequency bands located at a spe
22、cified fixed point on land to provide afeeder link for the maritime mobile-satellite service (see Radio Regulations, Article 1).3 Overview of Recommendations3.1 Recommendation Q.1101Sets out the general requirements for interworking between the first generation (Standard A) INMARSAT system andthe in
23、ternational public telephone network. A brief description of the INMARSAT Standard A system is also included.3.2 Recommendation Q.1102Specifies the interworking between the INMARSAT Standard A system and Signalling System R2.3.3 Recommendation Q.1103Specifies the interworking between the INMARSAT St
24、andard A system and Signalling System No. 5.3.4 Recommendation Q.1111Provides information on services offered in the INMARSAT Standard B system, and describes the requirements forconnection and internetworking with the public networks. A brief description of the Standard-B system is appended.3.5 Rec
25、ommendation Q.1112Presents the procedures for interworking between the INMARSAT Standard B system and the signalling systems of theinternational public network.3.6 Recommendation Q.1151Provides information on the services offered in the INMARSAT aeronautical system and describes the requirements forconnection and interworking with the public networks. A brief description of the aeronautical system is appended.3.7 Recommendation Q.1152Presents the procedures for interworking between the INMARSAT aeronautical system and the signalling systems of theinternational public network.
