Your browser is no longer supported

To get the best experience with www.aeso.ca, we suggest using a newer version of Internet Explorer/Edge, or using another supported browser such as Google Chrome.

ETS users may continue to log in using Internet Explorer 9 using the upper right hand link marked ETS Login.

    View all documents

    Section 502.4 - Automated Dispatch and Messaging System and Voice Communication System Requirements

    Document history

    • Current Mar. 27, 2015

      This is the current effective document for section 502.4 of the ISO rules.

      Download (219 KB)
    • Archive Jul. 2, 2014

      Previous effective document July 2, 2014 - March 26, 2015.

      Download (203 KB)
    • Archive Jan. 8, 2013

      Previous effective document January 8, 2013 - July 1, 2014.

      Download (322 KB)
    • Archive Jun. 1, 2011

      Previous effective document June 1, 2011 - January 7, 2013.

      Download (314 KB)
    • Archive Sep. 12, 2005

      Operational Voice Communications Standard - Prior to Sept 16, 2005

      Download (58 KB)
    • Archive Sep. 12, 2005

      Operational Voice Communications Standard

      Download (4.2 MB)