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TS 23.284
Local Call Local Switch (LCLS)

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V18.0.0 (PDF)  2024/03  192 p.
V17.0.0  2022/03  191 p.
V16.0.0  2020/06  194 p.
V15.0.0  2018/06  189 p.
V14.0.0  2017/03  194 p.
V13.0.0  2015/12  193 p.
V12.0.0  2013/12  192 p.
V11.1.0  2012/12  192 p.
V10.5.0  2012/12  192 p.
Rapporteur:
Mrs. Biondic, Nevenka
Ericsson LM

essential Table of Contents for  TS 23.284  Word version:  18.0.0

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List of Figures and Tables

Figure 4.1.1Example of Local Call Local Switching
Table 4.2.1.1Final LCLS configuration preference negotiated on the Core Network path and the related LCLS configuration requested from the BSS
Figure 4.2.1.1General concepts for LCLS configurations as a result of LCLS Negotiation.
Figure 6.3.1.1Basic Call Establishment Connection Model for Local Call
Figure 6.3.2.1Basic Call Establishment Flow when call is locally switched, forward bearer establishment
Figure 6.3.2.2Basic Call Establishment when call is locally switched, forward bearer establishment (continuation of Figure 6.3.2.1)
Figure 6.3.2.3Basic Call Establishment when call is locally switched, forward bearer establishment (continuation of Figure 6.3.2.2)
Figure 6.3.3.1Basic Call Establishment Flow when call is not locally switched
Figure 6.3.4.1Basic Call Establishment Flow when call is locally switched
Figure 6.3.4.2Basic Call Establishment when call is locally switched (continuation of Figure 6.3.4.1)
Figure 6.3.4.3Basic Call Establishment when call is locally switched (continuation of Figure 6.3.4.2)
Figure 6.3.4.4Basic Call Establishment when call is locally switched (continuation of Figure 6.3.4.3)
Figure 6.3.5.1Basic Call Establishment Flow when call is locally switched, backward bearer establishment
Figure 6.3.5.2Basic Call Establishment when call is locally switched, backward bearer establishment (continuation of Figure 6.3.5.1)
Figure 7.2.4.1.1LCLS Break (Network model)
Figure 7.2.4.2.1MSC Server initiated LCLS break
Figure 7.2.4.3.1BSS initiated, immediate LCLS break
Figure 7.2.4.4.1BSS initiated, LCLS Release ordered from Core Network
Figure 7.2.4.5.1Intermediate Node / GMSC Server initiated LCLS break
Figure 7.2.4.6.1MSC initiated LCLS break, access side termination isolated in MGW
Figure 7.3.4.1.1LCLS Re-establishment (Network model)
Figure 7.3.4.2.1MSC server Initiated LCLS Re-establishment
Figure 7.3.4.3.1Intermediate Node / GMSC Server Initiated LCLS Re-establishment
Figure 7.3.4.4.1MSC server Initiated LCLS Re-establishment, access side termination isolated in MGW
Figure 8.2.2.1.5.1.1Basic Intra-MSC UMTS to GSM Handover (network model)
Figure 8.2.2.1.5.2.1Intra-MSC UMTS to GSM Handover that establishes Local Switching
Figure 8.2.3.1.4.1.1Basic Inter-MSC UMTS to GSM Handover (network model)
Figure 8.2.3.1.4.2.1Initial phase of Inter-MSC UMTS to GSM Handover establishing Local Switching
Figure 8.2.3.1.4.2.2Completion phase of Inter-MSC UMTS to GSM Handover establishing Local Switching
Figure 8.3.1.6.1.1Network model for Intra-MSC GSM to UMTS Handover that breaks LCLS
Figure 8.3.1.6.2.1Intra-MSC GSM to UMTS Handover that terminates Local Switching
Figure 8.3.2.4.1.1Inter-MSC GSM to UMTS Relocation Connection Model when user plane active
Figure 8.3.2.4.2.1Inter-MSC GSM to UMTS Relocation that breaks Local Switching when user plane active, initial phase
Figure 8.3.2.4.2.2Inter-MSC GSM to UMTS Relocation that breaks Local Switching when user plane active, completion phase
Figure 8.4.1.1.7.1.1Intra-MSC Inter-BSS Handover Connection Model that breaks LCLS
Figure 8.4.1.1.7.2.1Intra-MSC Inter-BSS Handover that breaks Local Switching
Figure 8.4.1.2.8.1.1Connection Models for Inter-BSS Handover that establishes Local Switching
Figure 8.4.1.2.8.2.1Inter-BSS Handover that establishes Local Switching
Figure 8.4.2.1.4.1.1Inter-MSC Inter-BSS Handover Connection Model when user plane active
Figure 8.4.2.1.4.2.1Inter-MSC Handover that breaks LCLS when user plane active, initial phase
Figure 8.4.2.1.4.2.2Inter-MSC Handover that breaks LCLS when user plane active, completion phase
Figure 8.4.2.2.4.1.1Basic Inter-MSC GSM to GSM Handover (network model)
Figure 8.4.2.2.4.2.1Initial phase of Inter-MSC Handover establishing Local Switching
Figure 8.4.2.2.4.2.2Completion phase of Inter-MSC Handover establishing Local Switching
Figure 8.4.5.5.1.1BSS Internal Handover Connection Model that Establishes Local Switching
Figure 8.4.5.5.2.1BSS Internal Handover for AoIP that Establishes Local Switching
Figure 8.4.5.6.1.1BSS Internal Handover Connection Model that Breaks Local Switching
Figure 8.4.5.6.2.1BSS Internal Handover for AoIP that Breaks Local Switching
Figure 8.4.5.7.1.1BSS Internal Handover Connection Model that Does Not Modify LCLS Status of a Locally Switched Call
Figure 8.4.5.7.2.1BSS Internal Handover for AoIP that Does Not Modify LCLS Status of a Locally Switched Call
Figure 8.4.5.8.1.1BSS Internal Handover Connection Model that Does Not Modify LCLS Status of a non-Locally Switched Call
Figure 8.4.5.8.2.1BSS Internal Handover for AoIP that Does Not Modify LCLS Status of a non-Locally Switched Call
Figure 13.2.6.1.1Connection Model for Call Deflection
Figure 13.2.6.2.1CD, Call Establishment Flow
Figure 13.2.6.2.2CD, Call Establishment Flow (continuation of Figure 13.2.6.2.1)
Figure 13.4.2.5.1.1Connection Model for Call Forwarding Unconditional
Figure 13.4.2.5.2.1CFU, Call Establishment Flow
Figure 13.4.2.5.2.2CFU, Call Establishment Flow (continuation of Figure 13.4.2.5.2.1)
Figure 13.4.3.2.7.1.1Connection Model for Call Forwarding Busy UDUB
Figure 13.4.3.2.7.2.1CFB UDUB, Call establishment flow
Figure 13.4.4.7.1.1Connection Model for Call Forwarding on No Reply
Figure 13.4.4.7.2.1CFNRy, Call establishment flow
Figure 13.5.2.2.1.1Connection Model for Accept Incoming call, original call is held
Figure 13.5.2.2.2.1Accept Incoming call, original call is held
Figure 13.6.2.3.1.1Connection Model for Call Hold
Figure 13.6.2.3.2.1Hold Request on LCLS call
Figure 13.6.2.3.2.2Retrieval Request and LCLS re-establishment
Figure 13.6.5.2.1Retrieval of held call, ongoing call has completed
Figure 14.6.2.5.1.1Connection Model, Mid-Call Announcement/tone
Figure 14.6.2.5.2.1Mid-Call Announcement/Tone Flow
Figure 14.6.2.6.1.1Connection Model, LCLS with UL Bicasting and Mid-Call Announcement/tone
Figure 14.6.2.6.2.1Mid-Call Announcement/Tone Flow with Block Local Data Request
Figure 14.6.2.6.3.1Mid-Call Announcement/Tone Flow when Access Side Termination is Isolated in MGW
Table 16.1.2.1LCLS related information in Initial Address message
Table 16.1.3.1LCLS related information in Answer message
Table 16.1.4.1LCLS related information in Bearer and Codec Information message
Table 16.1.5.1LCLS related information in the LCLS Negotiation message
Table 16.1.5.2LCLS related information in the Address Complete message
Table 16.1.5.3LCLS related information in the Call Progress message
Table 16.1.6.1LCLS related information in the LCLS Configuration Change Request message
Table 16.1.7.1LCLS related information in LCLS Status update message
Table 16.1.8.1LCLS related information in LCLS Status Change Request message
Table 16.1.9.1LCLS related information in MAP-Prepare-Handover Request message
Table 16.3.2.1LCLS related information in Assignment Procedure
Table 16.3.3.1LCLS related information in Handover Request Procedure
Table 16.3.4.1LCLS related information in Handover Request Procedure
Table 16.3.5.1LCLS related information in Handover Request Procedure
Table 16.3.6.1LCLS related information in Internal Handover Command Procedure
Table 16.3.7.1LCLS Connection Procedure between MSC-Server and BSS
Table 16.3.8.1LCLS Notification Procedures between MSC-Server and BSS
Table 19.1LCLS specific timers
Figure A.1.1oMSC requesting UL data from tUE plus sending DL data to oUE
Figure A.1.2oMSC requesting UL data from oUE indicated in LCLS-Negotiation
Figure A.1.3oMSC requesting UL data from oUE not indicated in LCLS-Negotiation
Figure A.1.4UL data requested from oUE by iMSC/tMSC, oMGW bothway through-connected
Figure A.1.5iMSC requesting UL data from tUE plus sending DL data to oUE
Figure A.2.1iMSC requesting UL data from oUE and sending DL data to tUE
Figure A.2.2iMSC requesting UL data from oUE and tMSC requesting DL data to tUE: option isolate access side termination from network side termination
Figure A.2.3iMSC requesting UL data from oUE and tMSC requesting DL data to tUE: option send Access DL, block local DL
Figure A.2.4tMSC requires DL data from tUE: option isolate access side termination from network side termination

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