This International Standard specifies the procedures, formats and facilities at the Packet Layer for DTE operating in conformance with ITU-T. Recommendation X.25. Both Virtual Call and Permanent Virtual Circuit modes of operation are covered.
DS/ISO/IEC 8208:2002 history
2002DS/ISO/IEC 8208:2002 Information technology - Data communications - X.25 Packet Layer Protocol for Data Terminal Equipment
1991DS/ISO/IEC 8208:1991 Information technology. Data communications. X.25 Packet Layer Protocol for Data Terminal Equipment