1、 TIA-102.AABC-D-1 (Addendum to TIA-102.AABC-D) November 2016Project 25 Trunking Control Channel Messages Addendum 1 ANSI/TIA-102.AABC-D-1-2016 APPROVED: NOVEMBER 7, 2016 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings
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23、HOUT SUCH LIMITATIONS. TIA-102.AABC-D-1 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. That MOU provides that A
24、PCO/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 Conventional Control Su
25、bcommittee (TR-8.10), and TIA Industry members. The 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 become part of the standard TIA-
26、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/FED shall establish and publish on
27、e or more standards for trunking operation. TIA-102.AABC-D-1 1 Contents INTRODUCTION 2 ADDENDUM SCOPE.2 6.1.6 Emergency Alarm Request (EMRG_ALRM_REQ) (replaces the existing section). 3 FIGURE 6.1.6-1 EMERGENCY ALARM REQUEST3 TABLE 6.1.6-1 EMERGENCY ALARM REQUEST SI-1 MAPPING.4 TABLE 6.1.6-2 EMERGENC
28、Y ALARM REQUEST SI-1 VALUES 4 TABLE 6.1.6-3 EMERGENCY ALARM REQUEST SI-2 VALUES 4 TIA-102.AABC-D-1 2 Introduction The purpose of this addendum is to update information contained in ANSI/TIA-102.AABC-D, “Trunking Control Channel Messages“. This addendum defines proposed enhancements to the Emergency
29、Alarm Request message as described in the Scope below. Addendum Scope This addendum enhances trunking control channel messages as follows: (1) Addition of “Special Information” fields to the EMRG_ALRM_REQ message to convey additional information regarding emergency alarm requests. This document will
30、 only include information relevant to the above-listed functionality. The reader is referred to ANSI/TIA-102.AABC-D 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 in th
31、is addendum directly translate to section numbers in the ANSI/TIA-102.AABC-D, Trunking Control Channel Messages document. TIA-102.AABC-D-1 3 Addendum changes to TIA-102.AABC-D begin here. 6.1.6 Emergency Alarm Request (EMRG_ALRM_REQ) (replaces the existing section) This is a special status indicatio
32、n typically reserved for the “life threatening“ situation. Octet 0 LB P Opcode Octet 1 Manufacturers ID Octet 2 Special Information 1 (SI-1) Octet 3 Special Information 2 (SI-2) Octet 4 reserved Octet 5 Octet 6 Group Address Octet 7 Octet 8 Source Address Octet 9 Octet 10 TSBK Octet 11 CRC Bit 7 6 5
33、 4 3 2 1 0 Figure 6.1.6-1 Emergency Alarm Request The Opcode field (octet 0, bits 5-0) indicates this is the Emergency Alarm from an identified subscriber unit. This is set to the value of %100111. Special Information 1 (SI-1) and Special Information 2 (SI-2) fields may be used to convey status rega
34、rding emergency alarm requests. The default $00 indicates the emergency alarm request has been generated by pressing of the emergency button or switch. Non-zero values indicate the emergency alarm request has been generated by conditions raised by the SU or its accessories. The default case conforms
35、 to the operation of any SU that does not support non-zero Code values for the EMRG_ALRM_REQ. SI-1 contains flags to indicate “common” codes to aid in interoperability, and availability of Additional Information in SI-2. SI-1 is decomposed as shown in Table 6.1.6-1: Table 6.1.6-1 Emergency Alarm Req
36、uest SI-1 Mapping AC IC6 IC5 IC4 IC3 IC2 IC1 MD 7 6 5 4 3 2 1 0 Bit 0 = MD = %1 to indicate Man-Down condition Bit 1-6 = ICx = %1 for Interoperable Condition x Bit 7 = AC = %1 indicates SI-2 contains Additional Codes TIA-102.AABC-D-1 4 SI-1 common codes are listed in Table 6.1.6-2: Table 6.1.6-2 Eme
37、rgency Alarm Request SI-1 Values SI-1 Value Definition $01 “Man-down” $02 - $FF reserved SI-2 is reserved for additional “common” codes and “user-defined” codes as listed in Table 6.1.6-3: Table 6.1.6-3 Emergency Alarm Request SI-2 Values SI-2 Value Definition $00 - $7F Reserved for common codes $80
38、 - $FF Reserved for user-defined codes THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA represents the global information and communications technology (ICT) industry through standards development, advocacy, tradeshows, business opportunities, market intelligence and world-wide environmental regulato
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