No products
ITU-T U.11 Telex and gentex signalling on intercontinental circuits used for intercontinental automatic transit traffic (Type C signalling)
ITU-T U.40 Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents
ITU-T U.101 Signalling systems for the Intex service (Types E and F signalling)
ITU-T U.200 The international telex service - General technical requirements for interworking
ITU-T U.206 Technical requirements for interworking between the international telex service and the videotex service
ITU-T U.220 The international telex service - Technical requirements for a status enquiry function in an interworking scenario
ITU-T U.207 Technical requirements to be met for the transfer of messages between terminals of the international telex service and group 3 facsimile terminals connected to the PSTN
ITU-T E.550 Grade-of-service and new performance criteria under failure conditions in international telephone exchanges
ITU-T E.846 Accessibility for 64 kbit/s circuit switched international end-to-end ISDN connection types
ITU-T O.133 Equipment for measuring the performance of PCM encoders and decoders