Ecma International Home
contact us
Ecma Site Map


Standard ECMA-412
Access Systems

(June 2015)

This standard specifies:

  • an ID triggered modular access system, the functions of the modules and the messages they exchange, and the sequence of messages, i.e. transitions of the transaction;
  • the system responsibility from receiving an access request until sending the result. i.e. a complete transaction;
  • the responsibilities of the modules, including time stamping and responding to the requests they received; and
  • the sequence and semantics of the messages and their elements.

The following file can be freely downloaded:

File name Size (Bytes) Content
ECMA-412.pdf 374 407 Acrobat (r) PDF file


Back Back





only search Ecma International

Level A conformance icon, 

          W3C-WAI Web Content Accessibility Guidelines 1.0