This addendum provides the following enhancements to the Project 25 Link Control Word Formats and Messages (TIA-102.AABF-D) standard:

1. Adds new messages in support of the Location on PTT functionality.

This document only includes information relevant to the scope as described above. The reader is referred to TIA-102.AABF-D for all other pertinent information. The next complete revision of TIA-102.AABF-D will incorporate the changes contained in this addendum.

Note that section numbers identified in this addendum directly translate to section numbers in the TIA-102.AABF-D, Project 25 Link Control Word Formats and Messages.