This Recommendation defines the characteristics of Group 3 facsimile terminals which enable documents to be transmitted on the general switched telephone network, international leased circuits and the Integrated Services Digital Network (ISDN). These term
ITU-T T.4-1999 history
2003ITU-T T.4-2003 Standardization of Group 3 facsimile terminals for document transmission SERIES T: TERMINALS FOR TELEMATIC SERVICES Study Group 16
1999ITU-T T.4-1999 Standardization of Group 3 Facsimile Terminals for Document Transmission - Series T: Terminals for Telematic Services Study Group 8