"Addendum Scope This addendum enhances trunking control channel messages to support: (1) ""US"" (UnSynced) bit added to the SYNC_BCST OSP to indicate whether Phase 2 TDMA traffic channels are synchronized with the FDMA control channel. (2) ""S"" (standalone) bit added to authentication ISP's per TR-8.10/10-02-170 (3) Enhancements to ADJ_STS_BCST and extended form of IDEN_UP_TDMA added. (4) Additions and clarifications to Clause 2 (2.3.20@ 2.3.40@ 2.3.41) This addendum also addresses various errata and clarifications. This document will only include information relevant to the above-listed functionality. The reader is referred to TIA-102.AABC-C for all other pertinent information. The next complete revision of TIA-102.AABC 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.AABC-C@ Trunking Control Channel Messages document."