Historical
ANSI INCITS 100-1989 (R2005)
Information Systems û Interface between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE) for Operation with Packet-Switched Data Communications Networks (PSDN), or between Two DTEs, by Dedicated Circuit (formerly ANSI X3.100-1989 (R2000)) (includes supplement ANSI X3.100a-1991)
Conforms to the requirements of CCITT Recommendation X.25, ISO 7776:1986, and ISO 8208:1987, and covers both the DTE/DCE and DTE/DTE interfaces.
InterNational Committee for Information Technology Standards [incits]