ITU-T U.210-1993 Intex Service Network Requirements to Effect Interworking with the International Telex Service - Telegraph Switching International Telex Service (Study Group IX) 7 pp
that new networks are being introduced based upon stored program control techniques
ITU-T U.210-1993 history
1993ITU-T U.210-1993 Intex Service Network Requirements to Effect Interworking with the International Telex Service - Telegraph Switching International Telex Service (Study Group IX) 7 pp