Automatic Request of the Answerback of the Terminal of the Calling Party by the Telex Terminal of the Called Party or by the International Network - Telegraphy Alphabetical Telegraph Terminal Equipment (Study Group IX) 4 pp
The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecommunication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to