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22、Y TIA WITHOUT SUCH LIMITATIONS. TIA-102.BACD-B i FOREWORD (This foreword in 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 provi
23、des 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 by TR8.19 (Wireline Interfaces) with inputs fro
24、m the APCO Project 25 Interface Committee (APIC), the APIC ISSI Task Group, and TIA Industry members. This document is being published to provide technical information on the emerging digital techniques for Land Mobile Radio Service. This document defines an Inter-RF Subsystem Interface (ISSI) for P
25、roject 25 supporting Project 25-defined supplementary data services. The ISSI is the interface between Radio Frequency Subsystems (RFSSs) enabling relevant Project 25 user requirements to be satisfied (e.g., as described in the Inter-RF Subsystem Interface Overview (TSB-102.BACC-A). Future related s
26、tandardization efforts are planned to develop new TIA standards defining protocols for an ISSI supporting Project 25-defined conventional voice and data services. In addition, future associated standardization efforts are planned to develop new TIA standards defining compliance tests (e.g., measurem
27、ent methods, performance recommendations, and interoperability tests) applicable to equipment implementing the Project 25 ISSI protocols defined in this and future related TIA standards. TIA-102.BACD-B ii Patent Identification The readers attention is called to the possibility that compliance with t
28、his document may require the use of one or more inventions covered by patent rights. By 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
29、 of willingness to grant licenses under those rights on reasonable and nondiscriminatory 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
30、been identified. TIA shall not be responsible for identifying patents for which licenses 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.BACD-B iii Table Of Contents 1 Introduction . 1 1.1 Scope
31、 1 1.2 References 2 1.2.1 Normative References . 2 1.2.2 Informative References 2 1.3 Terms and Abbreviations 2 2 Overview of Architecture and Protocol Suite . 5 2.1 Architecture Overview . 5 2.1.1 Function Models . 5 2.1.2 Subsystem Topologies . 11 2.1.3 Functional Model 16 2.1.4 Service Access Poi
32、nt Model . 21 2.2 ISSI Internet Protocol Suite . 26 2.3 ISSI Data Transmission Order 27 3 SIP Messages and Parameters Definition 27 3.1 Preamble: Grammar 27 3.2 SIP Transport 27 3.3 Request Line Construction 27 3.4 SIP URI and related addressing logic . 28 3.4.1 General Characteristics of SIP URIs 2
33、8 3.4.2 Summary of Request Line URI 28 3.5 SIP Header Encoding . 29 3.5.1 Accept 32 3.5.2 Accept-Encoding 32 3.5.3 Accept-Language . 32 3.5.4 Alert-Info 32 3.5.5 Allow 32 3.5.6 Authentication-Info . 33 3.5.7 Authorization 33 3.5.8 Call-ID 33 3.5.9 Call-Info 33 3.5.10 Contact . 33 3.5.11 Content-Disp
34、osition 33 3.5.12 Content-Encoding 33 3.5.13 Content-Language . 33 3.5.14 Content-Length 33 3.5.15 Content-Type . 33 3.5.16 CSeq 34 3.5.17 Date . 34 3.5.18 Error-Info 34 3.5.19 Expires . 34 3.5.20 From . 34 3.5.21 In-Reply-To 35 3.5.22 Max-Forwards 35 TIA-102.BACD-B iv 3.5.23 MIME-Version 35 3.5.24
35、Priority 35 3.5.25 Proxy-Authenticate . 36 3.5.26 Proxy-Authorization 36 3.5.27 Proxy-Require 36 3.5.28 Record-Route . 36 3.5.29 Reply-To 36 3.5.30 Require 36 3.5.31 Retry-After 36 3.5.32 Route . 36 3.5.33 Server 37 3.5.34 Subject . 37 3.5.35 Supported 37 3.5.36 Timestamp . 37 3.5.37 To . 37 3.5.38
36、Unsupported 38 3.5.39 User-Agent . 38 3.5.40 Via 38 3.5.41 Warning 38 3.5.42 WWW-Authenticate 41 3.6 Status-Code and Reason-Phrase . 41 3.7 SDP Announcements 42 3.8 X-TIA-P25-ISSI Body Parameters . 42 3.9 X-TIA-P25-SupDat Parameters . 42 3.9.1 Supplementary data message attribute 44 3.9.2 Supplement
37、ary data tag attribute . 44 3.9.3 Supplementary data function attribute 44 3.9.4 Supplementary data “secondary response to” attribute 45 3.9.5 Affiliated Group 45 3.9.6 Supplementary data parameters attribute 45 3.9.7 Supplementary data error attribute 47 3.9.8 Supplementary data monitor event attri
38、bute 47 3.9.9 Supplementary data monitor “to” attribute 48 3.9.10 Supplementary data monitor “from” attribute 48 3.9.11 Supplementary data monitor “date” attribute 48 3.9.12 Supplementary data monitor warnings attribute . 48 4 Mobility Management 49 5 Supplementary Data Procedures 49 5.1 SD Service
39、Access Point Models 50 5.2 SD Transport State Models . 53 5.2.1 Calling Serving State Models . 53 5.2.2 Calling Home State Models 55 5.2.3 Called, FNE or Group Home State Model 57 5.2.4 Called, FNE or Group Serving State Model . 61 5.3 General Procedures 64 5.3.1 200 OK Response Construction . 65 TI
40、A-102.BACD-B v 5.3.2 Unsuccessful Final Response Construction and Forwarding . 66 5.3.3 Determination of Role 66 5.3.4 Correlating SD Requests and Responses 67 5.4 SD Transport Procedures . 67 5.4.1 Calling Serving RFSS Procedures . 67 5.4.2 Calling Home RFSS Procedures 69 5.4.3 Called, Called (FNE)
41、 and Group Home RFSS Procedures 73 5.4.4 Called, Group and FNE Serving RFSS Procedures . 81 5.5 SD Monitoring Procedures 85 5.5.1 Home RFSS Procedures 85 5.5.2 Listening Serving RFSS Procedures 88 5.6 Timers and Constants . 89 6 Message Sequence Charts Informative 90 6.1 Unit to Unit SD Distribution
42、 MSC 90 6.2 Group or FNE SD Distribution MSC 91 6.3 Group or FNE SD Distribution MSC - Multiple Response Race 92 6.4 SD Distribution MSC SIP Timeout Cascade 93 6.5 SD Distribution MSC Error at Calling Home . 94 6.6 SD Distribution MSC Error at Called Home 95 6.7 SD Distribution MSC Error at Called S
43、erving . 96 6.8 SD Distribution MSC Response Error 97 6.9 Group or FNE SD Distribution MSC Single Response Error 98 6.10 Group or FNE SD Distribution MSC All Response Errors . 99 6.11 SD Distribution MSC Called Home Timeout 100 6.12 Group or FNE SD Distribution MSC Called Home Timeout 101 6.13 SD Di
44、stribution MSC E2E Timeout . 102 6.14 SD Distribution MSC Called Serving Timeout . 103 TIA-102.BACD-B vi List of Tables Table 1 - Function/Addressing Summary 7 Table 2 - Supplementary Data SAP Functions . 24 Table 3 - Supplementary Data SAP Functions . 26 Table 4 - Summary of Request Line URIs 29 Ta
45、ble 5 - Message Headers affected by this specification 30 Table 6 - P25 Condition Code Summary 39 Table 7 - Supplementary data transport attributes summary 43 Table 8 - SD Function Codes and Meanings 45 Table 9 - SD Parameters 46 Table 10 - Enhanced Radio Unit Monitor s-parm Octets . 47 Table 11 - S
46、D Message Contents Summary . 50 Table 12- Calling Serving State Summaries . 54 Table 13- Calling Serving State Transitions 55 Table 14- Calling Serving Transition Actions 55 Table 15- Calling Home State Summaries 56 Table 16- Calling Home State Transitions 57 Table 17- Calling Home Transition Action
47、s . 57 Table 18- Called, Group or FNE Home State Summaries 59 Table 19- Called, Group or FNE Home State Transitions . 60 Table 20- Called, Group or FNE Home Transition Actions . 61 Table 21- Called, Group or FNE Serving State Summaries 63 Table 22- Called, Group or FNE Serving State Transitions 64 T
48、able 23- Called, Group or FNE Serving Transition Actions . 64 Table 24 200 OK Response Construction 65 Table 25 Unsuccessful Final Response Construction 66 Table 26 - SD Distribution Request Construction 68 Table 27 - SD Distribution Request Forwarding 72 Table 28 - SD Distribution Response Forwardi
49、ng . 73 Table 29 - SD Distribution Secondary Response Construction (To Dest. Serving RFSS) . 80 Table 30 - Successful SD Distribution Response Construction 83 Table 31 - Unsuccessful SD Distribution Response Construction 84 Table 32 - SDM (Received) MESSAGE Request Construction 86 Table 33 - SDM (Forwarded) MESSAGE Request Construction 87 Table 34 - SDM (Error) MESSAGE Request Construction . 88 Table 35 - Timers and Constants 89 TIA-102.BACD-B vii List of Figures Figure 1 - Supplementary Data Function Models 6 Figure 2 SU to SU Supplementary Data Transpor
