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5、he responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-604-UGR, formulated under the cognizance of the TIA, TR-8 Mobile and Personal Private Radio
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22、AABG ii 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 APCO/NASTD/FED will devise a Comm
23、on 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), the APIC Systems Tas
24、k Group, and 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 enhancements to the conventional messages for meeting the Project 25
25、 requirements. These definitions are necessary to insure interoperability of conventional radio units. As other documents describing the conventional protocol are developed, this document will be subject to change, additional messages may be needed. Some efforts have been made to ensure accuracy. Th
26、is document is a standard. It presents an overview of conventional 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-102.AABG iii Table of Contents 1. Introduction .1 1.1 Scope.1 1.2
27、Overview1 1.3 References 1 1.3.1 Normative References2 1.3.2 Informative References.2 1.4 Definitions2 1.5 Acronyms.2 1.6 Revision History.3 2 Supplementary Data Message Specifications 4 TIA-102.AABG 1 1. Introduction APCO Project 25 applies to both conventional and trunked systems. The distinction
28、between conventional and trunking systems may be that trunking systems include a centralized controlling device which is used to assign channels to subscribers as service is demanded. This controlling device is absent in a conventional system. A large set of useful functions are defined for trunking
29、 systems, including but not limited to the functions necessary for subscribers to request service and for the controller to grant service. Trunking also defines functions which may be applied to conventional systems, such as an Emergency Alarm. This document is intended to define the messages for th
30、ose functions that are defined for trunking which can also be applied to conventional systems. These control functions are referred to as Supplementary Data functions in this document. 1.1 Scope This document defines the message formats for the conventional supplementary data functions. These supple
31、mentary data messages are extensions to the basic Common Air Interface. Conventional systems for APCO Project 25 are defined to be any non-trunked system which conforms to the standards and specifications of 102A or its subordinate documents, where a trunked system is defined to include a centralize
32、d controller that assigns requests for service by subscribers to specific radio channels. Conventional systems therefore do not have a controller which assigns radio channels in the same sense as defined in 102AABC-B. 1.2 Overview The following supplementary data messages of trunking systems are use
33、ful in some conventional systems. Those control messages for services that are listed as standard options in 102A are labeled accordingly. Note that Radio Detach, not found in 102A but defined in 102AABC-B and 102AABD-A, is not a conventional feature and is not listed below. Emergency Alarm - Not sp
34、ecifically mentioned Call Alert - Standard Option Radio Check - Not specifically mentioned Radio Inhibit and Radio Uninhibit - Standard Option Status Update and Status Request - Not specifically mentioned Message - Standard Option Telephone Interconnect Dialing - Standard Option Radio Unit Monitor -
35、 Standard Option These supplementary data messages are defined in this document for conventional systems. 1.3 References The following documents contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were v
36、alid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them.
37、TIA-102.AABG 2 1.3.1 Normative References 102AABC-B Trunking Control Channel Messages, TIA-102.AABC-B, January 2005. 102BAAA-A Recommended Common Air Interface, TIA-102.BAAA-A, September 2003. 102AABD-A Trunking Procedures, TIA-102.AABD-A, December, 2008. 102BADA Telephone Interconnect Requirements
38、and Definitions (Voice Service), TIA-102.BADA, March 2000. 102BADA-1 Addendum 1 of Telephone Interconnect Requirements and Definitions (Voice Service), TIA-102.BADA-1, April 2004. 102BAAD Common Air Interface Operational Description for Conventional Channels, TIA-102.BAAD, December 2003. 102AABF-A L
39、ink Control Word Formats and Messages, TIA-102.BAAC-A, December 2003. 1.3.2 Informative References 102A Project 25 System and Standards Definition, TSB-102.A, November 1995. 1.4 Definitions Console: This term is used to denote a fixed console device. .A console is wireline device, located inside an
40、RFSS or attached to the RFSS via the P25 Console Sub-System Interface. Mobile: This term is used to denote a mobile radio device. A Mobile is portable and can roam. A mobile can be a mobile console which has additional capabilities beyond a normal mobile such as being able to originate the Remote Mo
41、nitor command. A mobile SU is the same as a mobile. SU: A P25 Subscriber Unit. An SU can be a fixed or portable unit. A Subscriber Unit is identified by an SUID. A console is typically considered a fixed P25 Subscriber Unit, although some may be mobile. A Mobile is considered a P25 portable unit. UI
42、D: A Unit ID. A conventional mobile radio has one UID for a given channel. A conventional radio may utilize the same or different UID on each of the channels that it operates. A conventional radios UIDs are pre-configured; they are not assigned by the system. A console also utilizes UIDs in the same
43、 manner as a mobile. 1.5 Acronyms ACK_RSP_FNE = Acknowledge response-FNE (to SU or to FNE) AIV = Additional Information Valid CAI = Common Air Interface CAN_SRV_REQ = Cancel Service Request DENY_RSP = Deny Response EMRG_ALRM_REQ = Emergency alarm request FNE = Fixed Network Equipment LC_CALL_TERM_CA
44、N = Call Termination/Cancellation QUE_RSP = Queue Response RAD_MON_CMD = Radio unit Monitor Command RFSS = RF Sub System TIA-102.AABG 3 STS_Q = Status Query STS_Q_REQ = Status Query request STS_Q_RSP = Status Query response STS_UPDT = Status update STS_UPDT_REQ = Status update request SU = Subscribe
45、r Unit TEL_INT_ANS_RSP = Telephone Interconnect Answer Response TEL_INT_ANS_REQ = Telephone Interconnect Answer Request TELE_INT_DIAL_REQ = Telephone interconnect voice service request TELE_INT_PSTN_REQ = Telephone Interconnect Request Implicit Dialing TSBK = Trunking Signaling Block 1.6 Revision Hi
46、story March 10, 1995, version 0.0, initialized the definitions of conventional features. June 30, 1995, substitute control messages for features. January 24, 1996, updated section numbers for revised reference 2 and also added addressing information. June 4, 1996, updated from letter ballot comments
47、. July 2007, Modified as part of the Compliance Assessment program. Updated to a normative TIA document and brought in the content of TSB-102.AABG-1. TIA-102.AABG 4 2 Supplementary Data Message Specifications Mobile SU 1Wireless Console SU 2Fixed Station 1RFSS 1Fixed Station 3Wireline Console SU 4Wi
48、reline Console SU 6Wireline Console SU 3RFSS 2Wireline Console SU 7Mobile SU 8Wireless Console SU 9Mobile SU 5Fixed Station 2Figure 2-1 Example Conventional System Diagram Conventional supplementary data utilizes the Trunked Signaling Block (TSBK) exactly as defined in TIA-102.AABC Trunking Control
49、Channel Messages 102AABC-B. To avoid duplicating the definitions, this section calls out the sections in 102AABC-B which define the messages. Some messages have two identical CAI formats defined whose names depend on whether the message originated from a mobile device or from the RFSS. Messages originating at an RFSS do so because of console action or because they came from another RFSS. For instance, in Figure 2-1, A CALL_ALRT_REQ originated by SU 1 to Fixed Sta
