1、 TIA-102.AABC-D-2 (Addendum to TIA-102.AABC-D) November 2017Project 25 Trunking Control Channel Messages Addendum 2- Vehicle Sensed Emergency ANSI/TIA-102.AABC-D-2-2017 APPROVED: NOVEMBER 15, 2017 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eli
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23、BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-102.AABC-D-2 Foreword (This foreword is not part of this standard.) This document has been submitted to APCO/NASTD/FED by the Telecommunications Industry Association (TIA), as provided for in a Memorandum of Understanding (MOU) dated December 1993. T
24、hat MOU provides that APCO/NASTD/FED will devise a Common System Standard for digital public safety communications (the Standard), and that TIA shall provide technical assistance in the development of documentation for the Standard. This document has been developed with inputs from the Trunking and
25、Conventional Control Subcommittee (TR-8.10), and TIA Industry members. The ANSI/TIA-102.AABC standard describes control channel messages for trunked systems meeting the Project 25 requirements. These definitions are necessary to insure interoperability of trunked radio units. This addendum will beco
26、me part of the standard ANSI/TIA-102.AABC. This document is a standard. It presents an overview of trunking messages which was recommended by TIA to APCO/NASTD/FED as being suitable for use as part of their standard for a digital public safety radio system (Project 25). TIA expects that APCO/NASTD/F
27、ED shall establish and publish one or more standards for trunking operation. TIA-102.AABC-D-2 1 Contents INTRODUCTION 2 ADDENDUM SCOPE 2 6.1.6 Emergency Alarm Request (EMRG_ALRM_REQ) 3 TABLE 6.1.6-1 EMERGENCY ALARM REQUEST SI-1 MAPPING 3 TABLE 6.1.6-2 EMERGENCY ALARM REQUEST SI-2 VALUES 3 TIA-102.AA
28、BC-D-2 2 Introduction The purpose of this addendum is to update information contained in ANSI/TIA-102.AABC-D, “Trunking Control Channel Messages“. This addendum builds on previous enhancements to the Emergency Alarm Request message as described in the Scope below. Addendum Scope This addendum enhanc
29、es trunking control channel messages as follows: (1) Specification of a “Vehicle Sensed Emergency” (VSE) bit in the “Special Information” field of the EMRG_ALRM_REQ message to convey additional information regarding a specific emergency alarm scenario request. This document will only include informa
30、tion relevant to the above-listed functionality. The reader is referred to ANSI/TIA-102.AABC-D and ANSI/TIA-102.AABC-D-1 for all other pertinent information. The next complete revision of ANSI/TIA-102.AABC will incorporate the changes contained in this addendum. Note that section numbers identified
31、in this addendum directly translate to section numbers in the ANSI/TIA-102.AABC-D and ANSI/TIA-102.AABC-D-1 Trunking Control Channel Messages and Trunking Control Channel Messages Addendum documents. TIA-102.AABC-D-2 3 Addendum changes to TIA-102.AABC-D-1 begin here. 6.1.6 Emergency Alarm Request (E
32、MRG_ALRM_REQ) Table 6.1.6-1 Emergency Alarm Request SI-1 Mapping AC IC6 IC5 IC4 IC3 IC2 VSE MD 7 6 5 4 3 2 1 0 Bit 0 = MD = %1 to indicate Man-Down condition Bit 1 = VSE = %1 to indicate Vehicle Sensed Emergency Bit 2-6 = ICx = %1 for Interoperable Condition x Bit 7 = AC = %1 indicates SI-2 contains
33、 Additional Codes SI-2 is reserved for additional “common” codes and “user-defined” codes as listed in Table 6.1.6-2: Table 6.1.6-2 Emergency Alarm Request SI-2 Values SI-2 Value Definition $00 - $7F Reserved for common codes $80 - $FF Reserved for user-defined codes THE TELECOMMUNICATIONS INDUSTRY
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