ITU U.206:1993
ITU U.206:1993 Technical Requirements For Interworking Between The International Telex Service And The Videotex Service
Table of Contents
1Introduction2Basicinterworkingservice
2.1General
2.2Accessmethodsforinterworking
3Telex-to-Videotexdirection
3.1One-stageselection
3.2Two-stageselection
4InterworkingintheVideotex-to-telexdirection
4.1Deliveryproceduretotelexfromaone-stage
Telex/VideotexConversionFacility(VTXCF)
4.2Deliveryproceduretotelexfromatwostage
Telex/Videotexconversionfacility(VTXCF)
4.3NotificationstotheVideotexuser
AnnexA-Reactionstoabnormalconditionsduringtext
inputfromtelex
A.1Thetelexsubscriberpausesduringinputofaddress
information(applicablefortwo-stageaccessonly)
A.2Thetelexsubscriberpausesduringorbeforeinput
ofhismessage
A.3ThetelexsubscribersendsaWRUsignaltotheVTXCF
duringtextinput
A.4ThetelexsubscribersendstextafteranEndOf
Transaction(EOT)signal(applicablefortwo-stage
accessonly)
A.5ThetelexsubscriberclearsafteranEndOf
Transaction(EOT)signalbeforehereceivesthe
InputMessage
Acknowledgement(IMA)signal(applicablefortwo-stage
accessonly)
A.6Thetelexsubscribersendscombinations6,7or8
infigurecase
A.7Thetelexsubscribersendscombination10infigure
case("BELL")
A.8StoragecapacityoverflowintheVTXCF