ISO/IEC 3309:1993

Information technology -- Telecommunications and information exchange between systems -- High-level data link control (HDLC) procedures -- Frame structure

Specifies the frame structure for data communication systems using bit-oriented high-level data link control (HDLC) procedures. Defines the relative positions of the various components of the basic frame and the bit combination for the frame delimiting sequence (flag). The mechanisms used to achieve bit pattern independence (transparency) within the frame are also defined. In addition, two frame checking sequences (FCS) are specified, the rules for address field extension are defined, and the addressing conventions available are described.


General information

  • Status :  Withdrawn
    Publication date : 1993-12
  • Edition : 5
  • :
    ISO/IEC JTC 1/SC 6
    Telecommunications and information exchange between systems
  • 35.100.20
    Data link layer

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information

 Subscribe