ITU-T F.68(11-1988) (英) Establishment of the automatic……

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1、INTERNATIONALTELECOMMUNICATIONUNION)45 4&TELECOMMUNICATIONSTANDARDIZATIONSECTOROFITU/0%2!4)/.3!.$15!,)49/&3%26)#%4%,%'2!0(3%26)#%3%34!",)3(-%.4/&4(%!54/-!4)#).4%2#/.4).%.4!,4%,%8.%47/2+)45 4Recommendation&(Extractfromthe"LUE"OOK)NOTES1ITU-TRecommendationF.68waspubli

2、shedinFascicleII.4oftheBlueBook.ThisfileisanextractfromtheBlueBook.WhilethepresentationandlayoutofthetextmightbeslightlydifferentfromtheBlueBookversion,thecontentsofthefileareidenticaltotheBlueBookversionandcopyrightconditionsremainunchanged(seebelow).2InthisRecommendation,theexpression“Administr

3、ation”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.ãITU1988,1993Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.

4、RecommendationF.68FascicleII.4-Rec.F.68ESTABLISHMENTOFTHEAUTOMATICINTERCONTINENTALTELEXNETWORK1Preamble–DefinitionsconnectedwiththenumberingoftelexsubscribersandtheroutingoftelexandgentexcallsinintercontinentalserviceThesedefinitionsareproposedtofacilitatethereadingofrecommendationsandsurveysonth

5、equestionofintercontinentaltelexandgentextraffic;theyhavebeenderivedtolargeextentfromthedefinitionssubmittedbytelephoneexpertsforstudyingtheanalogousprobleminintercontinentaltelephoneoperationandadaptedtothespecialfeaturesofthetelexandgentexservices.Preliminarynote–Thewordcontinentisnotnecessaril

6、yusedinitsgeographicalsense:trafficcharacteristicsmaycausecountriesofgeographicallydifferentcontinentstobeincludedinonecontinent(withinthemeaningofthesedefinitions).1.1Circuits1.1.1Anationalcircuitisoneconnectingtwoexchangesinthesamecountry.1.1.2Aninternationalcircuitisoneconnectingtwoexchangesin

7、differentcountries,whetherornottheyareindifferentcontinents.1.1.3Acontinentalcircuitisoneestablishedbetweentwoexchangesinthesamecontinent.1.1.4Anintercontinentalcircuitisoneconnectingtwoexchangessituatedindifferentcoun