1、 TIA-102.AABF-D (Revision of TIA-102.AABF-C) April 2015Project 25 Link Control Word Formats and Messages ANSI/TIA-102.AABF-D-2015 APPROVED: FEBRUARY 24, 2015 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manu
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23、TATIONS. TIA-102.AABF-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. That MOU provides that the APCO/NASTD/
24、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 APCO/TIA Project 25 Interface Committee (APIC)
25、, the APIC Trunking Task Group, the APIC Format Task Group, and the TIA Industry members. This document is being published because it is felt that there is an urgent need for technical information on the emerging digital techniques for Land Mobile Radio Service. This document describes the link cont
26、rol formats and messages for conventional and trunked systems utilizing the Common Air Interface meeting the Project 25 requirements. These definitions are necessary to ensure interoperability of radio units. As other documents describing the conventional and trunking protocols are developed, this d
27、ocument will be subject to change. All reasonable efforts have been made to ensure accuracy, but it should be understood that conformance tests remain to be developed and proven. TIA-102.AABF-D i Table of Contents 1 Introduction . 1 2 Scope . 1 3 Document Revision History 1 4 Symbols, Abbreviations,
28、 Terms, Definitions, Mnemonics . 2 4.1.1 Symbols . 2 4.1.2 Abbreviations . 2 4.1.3 Terms 2 4.1.4 Definitions 2 4.1.5 Mnemonics 3 5 References . 3 5.1 Normative References 3 5.2 Informative References . 4 6 Link Control Word Overview . 5 7 Link Control Word Formats . 6 7.1 Implicit MFID LC Message Ba
29、sic Format 6 7.2 Explicit MFID LC Message Basic Format . 7 7.3 LC Messages 9 7.3.1 Group Voice Channel User 9 7.3.2 Group Voice Channel Update 10 7.3.3 Unit to Unit Voice Channel User 10 7.3.4 Group Voice Channel Update Explicit . 11 7.3.5 Unit to Unit Answer Request 11 7.3.6 Telephone Interconnect
30、Voice Channel User 12 7.3.7 Telephone Interconnect Answer Request 12 7.3.8 Call Termination/Cancellation 13 7.3.9 Group Affiliation Query 13 7.3.10 Unit Registration Command . 14 7.3.11 Unit Authentication Command - OBSOLETE . 14 7.3.12 Status Query 15 7.3.13 System Service Broadcast . 16 7.3.14 Sec
31、ondary Control Channel Broadcast 16 7.3.15 Adjacent Site Status Broadcast . 17 7.3.16 RFSS Status Broadcast . 17 7.3.17 Network Status Broadcast . 18 7.3.18 Status Update 18 7.3.19 Message Update 19 7.3.20 Call Alert 20 7.3.21 Extended Function Command . 21 7.3.22 Channel Identifier Update 21 7.3.23
32、 Protection Parameter Broadcast - OBSOLETE . 22 7.3.24 Secondary Control Channel Broadcast Explicit (LCSCBX) . 23 7.3.25 Adjacent Site Status Broadcast Explicit (LCASBX) . 24 7.3.26 Channel Identifier Update VU 25 7.3.27 RFSS Status Broadcast Explicit (LCRSBX) 26 7.3.28 Network Status Broadcast Expl
33、icit (LCNSBX) 26 TIA-102.AABF-D ii 7.3.29 Unit to Unit Voice Channel User Extended . 27 7.3.30 Status Update Source ID Extension Required 27 7.3.31 Message Update Source ID Extension Required . 28 7.3.32 Source ID Extension 28 7.3.33 Extended Function Command Source ID Extension Required . 29 7.3.34
34、 Conventional Fallback . 29 7.4 Standard LC Field Definitions . 30 7.5 Link Control Word Usages 39 TIA-102.AABF-D iii Patent Identification The readers attention is called to the possibility that compliance with this document may require the use of one or more inventions covered by patent rights. By
35、 publication of this document, no position is taken with respect to the validity of those claims or any patent rights in connection therewith. The patent holders so far identified have, we believe, filed statements of willingness to grant licenses under those rights on reasonable and nondiscriminato
36、ry terms and conditions to applicants desiring to obtain such licenses. The following patent holders and patents have been identified in accordance with the TIA intellectual property rights policy: No patents have been identified TIA shall not be responsible for identifying patents for which license
37、s may be required by this document or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. TIA-102.AABF-D 1 1 Introduction This document shall provide information that is necessary to define the formats and messages for the Link Control Words
38、for both conventional and trunking operation. Link Control Words are code words that encode 9 octets of information. They may be embedded within voice messages or separated into voice terminators, as defined in the BAAA. 2 Scope The Link Control Word Formats and Messages document is part of the TIA-
39、102 suite of standards. A general overview of the TIA-102 suite of standards is in 102B. The reader should have familiarity with this document. Included in this reference is the Representative LMR Functional Network Model, an overview of the TIA-102 series of documents, and a glossary of terms. This
40、 specification is to define the formats and messages of the Link Control Words that are to be used in the TIA-102 standardized systems, both conventional and trunked. Not all of the Link Control words apply to conventional systems. Not all of them apply to trunked systems. Some Link Control words ap
41、ply to both. Collectively the definitions cover the needs for both trunked and conventional systems. The Link Control words carry identification information and/or control information necessary and useful for notifying listeners on a voice call of system events and status. This document does not def
42、ine the error correction for the Link Control words, nor the details of the modulation on the radio channel. This is covered in BAAA. This document makes use of the fields defined in other documents, such as BAAA, BAAC, and AABC. Among these definitions are the MFID, individual and group addresses,
43、channel numbers, reserved bits, etc. 3 Document Revision History Table 1: Revision History Version Date Description Rev 0 Oct2003 Approved for TIA publication Rev A Dec2004 Approved for TIA publication Rev B Jul2009 Approved for TIA publication (Merger of AABF-A, AABF-A-1, AABF-A-2, and AABF-A-3) Re
44、v C Jan2011 Approved for TIA publication Rev D Feb2015 Approved for TIA publication (Merges AABF-C, AABF-C-1, and Editorial Board comments TIA-102.AABF-D 2 4 Symbols, Abbreviations, Terms, Definitions, Mnemonics The following sections provide a listing of phrases used throughout the rest of the docu
45、ment for which the reader may appreciate a little extra interpretive assistance. 4.1.1 Symbols For the purposes of this Standard, the following symbols apply: The following numbering conventions are used in this document. Decimal Hexadecimal Binary 13 $D %1101 The $ represents a number that is hexad
46、ecimal. The % represents a number that is binary. 4.1.2 Abbreviations For the purposes of this document, the following abbreviations apply: kb/s kilo bits per second Mb/s Million bits per second mV millivolts V volts 4.1.3 Terms For the purposes of this Standard, refer to Section 7.4 and 102B for al
47、l applicable terms. 4.1.4 Definitions For the purposes of this Standard, the following Functional Network Model reference point definitions (found in 102B) apply: A Subscriber Unit data communications reference point Ed Wireline End system data reference point Um Common Air Interface reference point
48、 SU Subscriber Unit is used to refer to radio units (fixed, mobile or portable) or wireline unit (PSTN or dispatcher) System A System is composed of at least one RFSS supporting a set of communication services across a defined coverage area. Source SU The SU originally requesting a call service from
49、 the RFSS. Destination SU The SU participating in a call service as the called party. TIA-102.AABF-D 3 4.1.5 Mnemonics For the purposes of this Standard, the following mnemonics apply: ANSI American National Standards Institute (bx by) Bit x to Bit y in the octet CAI Common Air Interface CRC Cyclical Redundancy Check ETDU Expanded Terminator Data Unit EIA Electronic Industries Alliance FNE Fixed Network Equipment ID Identifier IETF Internet Engineering Task Force ISP Inbound Signaling Packet LC Link Control Word LCF Link Control Format LCO Link
