ITU-T F.130(11-1988) (英) Maritime answer-back codes

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1、INTERNATIONALTELECOMMUNICATIONUNION)45 4&TELECOMMUNICATIONSTANDARDIZATIONSECTOROFITU/0%2!4)/.3!.$15!,)49/&3%26)#%-/"),%3%26)#%-!2)4)-%!.37%2 "!#+#/$%3)45 4Recommendation&(Extractfromthe"LUE"OOK)NOTES1ITU-TRecommendationF.130waspublishedinFascic

2、leII.4oftheBlueBook.ThisfileisanextractfromtheBlueBook.WhilethepresentationandlayoutofthetextmightbeslightlydifferentfromtheBlueBookversion,thecontentsofthefileareidenticaltotheBlueBookversionandcopyrightconditionsremainunchanged(seebelow).2InthisRecommendation,theexpressi

3、on“Administration”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.ãITU1988,1993Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,w

4、ithoutpermissioninwritingfromtheITU.RecommendationF.130FascicleII.4-Rec.F.130MARITIMEANSWER-BACKCODESTheCCITT,considering(a)thatitistechnicallyfeasibletointerconnectcertainradiocommunicationsystemsintheMaritimeMobileService1)withtheinternationaltelexnetworkinordertoprovide

5、aradiotelexservicebetweenshipsandtelexsubscribers,inaccordancewithRecommendationF.110;(b)thatRecommendationF.60specifiestheoperationalprovisionsfortheinternationaltelexservice,andinparticular,forthecompositionofanswer-backcodes;c)that,sincenosingleAdministrationisresponsib

6、lefortheallocationofanswer-backcodestoshipsinthewaythatsuchcodesareadministeredinindividualnationaltelexnetworks,somerulesfurthertothosesetdowninRecommendationF.60aredesirable,forexampletofacilitateautomaticoperationintheship-to-shoredirectionandtosimplifythehandlingofinqu

7、iriesconcerningcallstoorfromships;(d)that,totheextentpossible,thealphabeticportionofmaritimeanswer-backcodesshouldprovideameansfordetectingpossiblemutilationofthenumericalportion,particularlyinthecaseofship-to-shorecallswhereitmaybeusedforchargingandaccountingpurposes,unan

8、imouslydeclaresthat,atleastincaseswhereinterconnectionwiththeinternationaltelexnetworkisd