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Content for  TS 23.009  Word version:  17.0.0

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15  SDL diagramsp. 121

SDL Annotation.
The following conventions and abbreviations have been used in the SDLs. Text included in '[]' is used to indicate either, the BSSMAP message (as defined in TS 49.008) included in the message, or the transport of a Handover Number.
When traversing the following SDLs it may be possible that resources appear to be released repeatedly, however these operations are only executed once on their first occurrence. Furthermore it maybe that certain messages cannot, in practice, be received in particular states, after specific events have taken place. In general both of the above cases are obvious. This approach has been adopted (in line with other GSM Technical Specifications) in order to reduce the complexity of the SDLs and improve clarity, without reducing the quality of the functional description.
The following abbreviations have been used in the SDLs:
A-HO-REQUESTA-HANDOVER-REQUEST
A-HO-REQUEST-ACKA-HANDOVER-REQUEST-ACK.
A-HO-COMPLETEA-HANDOVER-COMPLETE
A-HO-DETECTA-HANDOVER-DETECT
A-HO-PERFORMEDA-HANDOVER-PERFORMED
A-ASG-REQUESTA-ASSIGNMENT-REQUEST
A-ASG-COMPLETEA-ASSIGNMENT-COMPLETE
A-ASG-FAILUREA-ASSIGNMENT-FAILURE
MAP-PAS reqMAP-PROCESS-ACCESS-SIGNALLING req.
MAP-FAS reqMAP-FORWARD-ACCESS-SIGNALLING req.
IU-RLC-REQUESTIU-RELOCATION-REQUEST
IU-RLC-REQUEST-ACKIU-RELOCATION-REQUEST-ACK
IU-RLC-COMPLETEIU-RELOCATION-COMPLETE
IU-RLC-DETECTIU-RELOCATION-DETECT
IU-IREL-REQUESTIU-IU-RELEASE-REQUEST
IU-RREL-REQUESTIU-RAB-RELEASE-REQUEST
IU-RASG-REQUESTIU-RAB-ASSIGNMENT-REQUEST
IU-RASG-RESPONSEIU-RAB-ASSIGNMENT-RESPONSE
Copy of original 3GPP image for 3GPP TS 23.009, Fig. 41: Handover control procedure in MSC-A (26 Sheets)
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Copy of original 3GPP image for 3GPP TS 23.009, Fig. 42: Handover control procedure in MSC-B (18 Sheets)
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Copy of original 3GPP image for 3GPP TS 23.009, Fig. 43: Handover control procedure in 3G_MSC-A (78 Sheets)
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Copy of original 3GPP image for 3GPP TS 23.009, Fig. 44: Handover control procedure in 3G_MSC-B (54 Sheets)
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$  Change historyp. 298


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