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16、older.Printed in the United States of AmericaiContentsPageForeword ii1 Scope, Purpose and Application 12 Normative References 13 Definitions and Abbreviations . 24 PACA-E Functional Model 35 Information Flows . 46 Queue Management 207 Capabilities for Charging 20AnnexA PACA-E Signals . 21Figures1 PA
17、CA-E Functional Model 32 PACA-E Procedure. 43 Priority Call Activation (Access/Egress) Scenario . 54 Priority Call Deactivation (Access/Egress) Scenario 65 Priority Access Call Successful Invocation/Call Completion Scenario 76 Priority Access Call Unsuccessful PACA-E Invocation Scenario . 97 PACA-E
18、Failure While Call is Queued Scenario 118 Priority Access Call Queue Position Update Scenario . 129 Idle Hand-off with PACA-E Invoked Scenario 1310 Call Delivery Processing (Egress) Scenario. 1511 Priority Egress Call Clearing Initiated by the Caller 1712 Priority Egress Call Clearing Initiated by t
19、he PACA-E Subscriber 1813 PACA-E Feature Interrogation Scenario 19Table1 PACA-E Timers 20iiForeword (This foreword is not part of American National Standard T1.714-2000.)This document defines the stage 2 service description of a supplementary service,PACA-E, for Personal Communications Service (PCS)
20、 basic services such as thosedefined in American National Standard for Telecommunications - Stage 1 ServiceDescriptions for Personal Communications Service - Circuit-Mode Bearer Services:Basic Processes, T1.705-1995.This service provides for the prioritization of PCS radio channel resources and isai
21、med at achieving a uniform, nationwide approach to the handling of priority calls.Committee T1 recognizes that this supplementary service is intended for PCS air in-terfaces developed under its jurisdiction.PACA-E, as described in this document, supersedes the PACA description in TIA IS-104.Suggesti
22、ons for improvement of this standard will be welcome. They should be sentto the Alliance for Telecommunications Industry Solutions, T1 Secretariat, 1200 GStreet, NW, Suite 500, Washington DC 20005.This standard was processed and approved for submittal to ANSI by the AccreditedStandards Committee on
23、Telecommunications, T1. Committee approval of this stan-dard does not necessarily imply that all committee members voted for its approval. Atthe time it approved this standard, the T1 Committee had the following members:Gerald H. Peterson, ChairmanE. R. Hapeman, Vice-ChairmanS. M. Carioti, T1 Discip
24、linesS. D. Barclay, T1 SecretaryRay Young, Technical EditorOrganization Represented Name of RepresentativeEXCHANGE CARRIERSAmeritech . Fred KujawskiCathy Lazzaro (Alt.)AT the top five levels (1 being highest) are reserved for NS/EP users. The remaining priority levels are offered as service provider
25、 options (e.g. emergency service calls). Emergency services call requests may be assigned a priority level in accordance with fed-eral/state law. Coordination between PACA-E and emergency service must be maintained to pro-vide capabilities consistent with use of the services as mandated by law. 2 No
26、rmative References The following standards contain provisions that, through reference in this text, constitute provi-sions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this
27、 American National Standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. T1.714-20002 T1.704-1996, Telecommunications - Stage 2 Service Description for Personal Communications Service - Circuit-Mode Bearer Services1)T1.706-1997,
28、Telecommunications - Stage 1 Service Description for Personal Communications Service - Enhanced Priority Access and Channel Assignment (PACA-E) Supplementary Service1)T1.705-1995, Telecommunications - Stage 1 Service Description for Personal Communications Service Circuit-Mode Bearer Services: Basic
29、 Processes1)Executive Order (E. O.) 12472, Assignment of National Security and Emergency Preparedness Telecommunications Functions, April 3, 1984 2)3 Definitions and Abbreviations 3.1 Definitions National Security and Emergency Preparedness (NS/EP): Executive Order (E.O.) 12472 directs the Office of
30、 the Manager, National Communications Sys-tem (OMNCS) to assist in the planning for a provisioning of NS/EP communications for the Fed-eral Government under all circumstances, through the use of commercial, government, and pri-vately owned telecommunications resources. These communities may be class
31、ified into national security leadership, national security posture and U.S. population warning; public health, safety, and maintenance of law and order; public welfare and maintenance of the national economic pos-ture. 3.2 Abbreviations CCF Call Control Function E.O. Executive Order FE Functional En
32、tity FEA Functional Entity Actions NS/EP National Security and Emergency Preparedness OMNCS Office of the Manager, National Communications System PACA-E Enhanced Priority Access and Channel Assignment PCS Personal Communications Service PMC Personal Mobility Controller PSTN Public Switched Telephone
33、 Network RACF Radio Access Control Function RASC Radio Access System Controller RCF Radio Control Function RPC Radio Port Controller RTF Radio Terminal Function SCF Service Control Function SCP Service Control Point SDF Service Data Function SSF Service Switching Function _ 1)For electronic copies o
34、f some standards, visit ANSIs Electronic Standards Store (ESS) at www.ansi.org. For printed versions of all these standards, contact Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80112-5704, (800) 854-7179. 2)Available from the National Communications System, 701 South Court Hou
35、se Road, Arlington, VA 22204-2198 or http:/www.ncs.gov/ncs/html/EO12472.htm. T1.714-200034 PACA-E Functional Model Figure 1 depicts the functional model to support priority access for PACA-E. RTF RCFRACFSSFCCFSCFSDFSSFFE1 FE2FE4FE4FE3 FE5FE6anddddCrascCrpcCrpcCCFFigure 1 - PACA-E Functional Model 4.
36、1 Radio Terminal Function (RTF) (FE1) The RTF is the point from which the PACA-E subscriber accesses the network. The RTF uses the “a” reference point towards the RCF (see T1.704). 4.2 Radio Control Function (RCF) (FE2) The radio control function interacts with other network functional entities (FEs
37、) to provide the net-work capabilities to interact with an RTF in the processing of a PACA-E call. The RCF uses the “a” reference point towards the RTF, the “crpc” reference point towards the RACF and the “crpc” reference point towards the CCF/SSF (see T1.704). 4.3 Radio Access Control Function (RAC
38、F) (FE3) The radio access control function responds and provides information to service logic in the proc-essing of PACA-E service requests. The RACF uses the “crpc” reference point towards the RCF, the “crasc” reference point towards the CCF/SSF and the “d” reference point towards the SCF (see T1.7
39、04). 4.4 Call Control Function (CCF)/Service Switching Function (SSF) (FE4) The CCF/SSF provides call/connection processing and control. The CCF/SSF manages the PACA-E queue. The CCF/SSF uses the “crpc” reference point towards the RCF, the “d” reference point towards the SCF, the “crasc” reference p
40、oint towards the RACF and the “n” reference point towards the CCF (see T1.704). 4.5 Service Control Function (SCF) (FE5)/Service Data Function (SDF) (FE6) The SCF commands call control functions and mobility management functions in the processing of PACA-E service requests. The SDF stores all data r
41、elated to providing the PACA-E service. The SCF/SDF interacts with other FEs to obtain information required to process the PACA-E call. The SCF uses the “d” reference point towards the CCF/SSF and the RACF, and the “dd” refer-ence point towards the SDF (see T1.704). 4.6 Call Control Function (CCF) /
42、Service Switching Function (SSF) (FE4) Incoming calls to PACA-E subscribers may need to be queued, if the PACA-E subscribers radio facilities (i.e. no radio channels are available) have become congested. These calls arrive from remote CCF/SSFs either from wireless or non-wireless users. The CCF uses
43、 the “n” reference point towards the CCF/SSF (see T1.704). T1.714-20004Figure 2 - PACA-E Procedure (see T1.706)ProcedureDecisionTaskStateOutputInputCommentEndT1.714-200055.1 Priority Call Activation (Access/Egress) This scenario describes the successful activation of PACA-E (access and egress) by an
44、 author-ized RTF, which has PACA-E status demand activated. Figure 3 - Priority Call Activation (Access/Egress) Scenario a) The RACF initiates a Qualification Request (see T1.704). For demand activation, the sub-scriber enters a feature code and sends the request (i.e., presses the SEND button), to
45、activate the PACA-E subscription service. NOTE - For permanent activation, the service is activated during user registration; PACA-E subscrip-tion is included in the users profile, so all call attempts have the PACA-E feature activated. Activation of PACA-E Access and Egress may be performed togethe
46、r or separately. b) The Serving RACF sends a PACA-E Notification (Success) Information Flow to the Visited RCF indicating that the PACA-E Activation was successful. NOTE - If the Activation request is unsuccessful (i.e., caller is not a PACA-E subscriber) the same message flows (steps b) e) occur, e
47、xcept the indication is set to “unsuccessful.” c) The RCF receives the PACA-E Notification (Success) Information Flow from the Serving RACF. The RCF forwards the PACA-E Notification (Success) Information Flow to the RTF, in-dicating that the PACA-E Qualification Request was successful. d) The RTF se
48、nds a PACA-E Notification Acknowledgement (Success) Information Flow to the RCF. e) The RCF receives the PACA-E Notification Acknowledgement (Success) Information Flow from the RTF. The RCF sends a PACA-E Notification Acknowledgement (Success) Informa-tion Flow to the RACF. FE1 (RTF) FE2 (RCF) FE5/6
49、 (SCF/SDF) FE4 (CCF/SSF) FE3 (RACF) a b c d Qualification Request PACA-E Notification (Success) PACA-E Notification Ack (Success) PACA-E Notification (Success) PACA-E Notification Ack (Success) e T1.714-20006 5.2 Priority Call Deactivation (Access/Egress) This scenario describes the successful deactivation of PACA-E (access and egress) by an author-ized RTF, which has PACA-E status demand activated. Figure 4 - Priority Call Deactivation (Access/Egress) Scenario a) The PACA-E subscriber ac
