This Standard defines the means by which a Data Communication System operating according to the Basic Mode Procedures defined in the Standard ECMA-16 can transfer texts without code restrictions.
This Standard extends Phase 3 (Information Transfer) as defined in the Standard ECMA-16 (para. 2.3.1). It also describes other uses of the DLE character than that described in the Standard ECMA-16 (page 7). Phase 2 (Establishment of Data Link) and Phase 4 (Termination) are not affected by this Standard.