EN 1546-4:1999

1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
  3.1 Terms defined in prEN 1546-1
  3.2 Symbols and abbreviations
4 Description of the Dictionary mechanisms
  4.1 Introduction
  4.2 Indication of the use of TLV coding
  4.3 Structure of the headerlist
  4.4 Coding of the Tag field
  4.5 Coding of the length field
  4.6 Coding of Data Elements
  4.7 Reading out the Dictionary of an IEP
  4.8 Parsing a headerlist
  4.9 Headerlist mapping
Annex A (informative) Examples of the use of headerlists
Annex B (informative) Examples of Discretionary Data
Bibliography

This part of EN 1546 defines the Tag values required and describes the Dictionary mechanisms necessary for their utilisation in order to achieve interoperability between IEP Systems where Data Elements have different lengths and/or the ordering of Data Elements in commands and responses is different from that defined in EN 1546-3. The mechanisms are based on TLV (Tag-length-value) definitions of each Data Element.