ITU U.201:1993
ITU U.201:1993 Interworking Between The Teletex Service And The International Telex Service
Table of Contents
1Introduction2Basicinterworkingservice
2.1Typesofinterworking
2.2Methodsofinterworking
3Telexaccesstoaconversionfacility(CF)
3.1One-stageselection
3.2Two-stageselection
4DeliveryproceduretoTeletexfromaCF
4.1Serviceprinciples
4.2Textdelivery
AnnexA-Reactionstoabnormalconditionsduringthe
telexinput
A.1Telexconnectionclearingwithouttheendof
inputsignal
A.2Telexsubscriberpausingduringinputofaddress
information
A.3Telexsubscriberstoppingtransmissionwithout
sendingtheendofinputsignal
A.4TelexsubscribersendingaWRUsignaltothe
conversionfacilityduringtextinput
A.5Telexsubscribersendingatextaftertheend
ofinputsignal
A.6Telexsubscriberclearingaftertheendofinput
signalandbeforetheinputmessageacknowledgement
signal
A.7TelexsubscribersendingnationalvariantsofITA2
characters(figureshiftcharactersofF,GandH)
A.8Theconversionfacilitydetectingsignaldistortion
duringtextinput
A.9Telexsubscribersendingabellsignal
A.10CFsstoragecapacityoverflowduringtelexmessage
input
A.11Requestofoptionalfacilities,whennotprovided
bytheCF