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Content for  TS 23.078  Word version:  19.0.0

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4.6.7 HLR to VLR information flows  4.6.8 VLR to HLR information flows  4.6.9 HLR to GMSC information flows  4.6.10 GMSC to HLR information flows  4.6.11 VMSC to GMSC information flows  4.6.12 MSC to VLR information flows 
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4.6.7  HLR to VLR information flows  p. 512

4.6.7.1  Delete Subscriber Data  p. 512

4.6.7.1.1  Description  p. 512
This IF is used by an HLR to delete CAMEL subscription data from a VLR. It is specified in TS 29.002.
4.6.7.1.2  Information Elements  p. 512
The Delete Subscriber Data IF contains the following CAMEL specific information elements:
Information element name Status Description
CAMEL Subscription Info WithdrawO,EThis IE identifies that all CSIs shall be deleted from the subscriber data in the VLR.
Specific CSI WithdrawO,EThis IE indicates that one or more specific elements of CAMEL Subscription Info shall be deleted from the VLR.
The specific elements of CAMEL Subscription Info which may be deleted are:
  • O-CSI with TDP criteria for O-CSI;
  • TIF-CSI;
  • D-CSI;
  • VT-CSI with TDP criteria for VT-CSI.
This IE should not be present when CAMEL Subscription Info Withdraw is present.
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4.6.7.2  Insert Subscriber Data  p. 513

4.6.7.2.1  Description  p. 513
This IF is used by an HLR to update a VLR with certain subscriber data. This IF is specified in TS 29.002.
4.6.7.2.2  Information Elements  p. 513
Insert Subscriber Data contains the following CAMEL specific information elements for circuit switched call control:
Information element name Status Description
O-CSIOThis IE is described in a Table below.
This IE identifies the subscriber as having originating CAMEL services.
D-CSIOThis IE is described in a Table below.
This IE identifies the subscriber as having originating CAMEL dialled services.
VT-CSIOThis IE is described in a Table below.
This IE identifies the subscriber as having terminating CAMEL services in the VMSC.
TIF-CSIOSee TS 23.072.
O-CSI contains the following information elements:
Information element name Status Description
gsmSCF AddressMThis IE is described in subclause 4.3.1.
Service KeyMThis IE is described in subclause 4.3.1.
Default Call HandlingMThis IE is described in subclause 4.3.1.
TDP ListMThis IE is described in subclause 4.3.1.
DP CriteriaOThis IE is described in subclause 4.3.1.
CAMEL Capability HandlingCThis IE is described in subclause 4.3.1. If this IE is absent, this indicates that CAMEL phase 1 support is requested.
D-CSI contains the following information elements:
Information element name Status Description
gsmSCF AddressMThis IE is described in subclause 4.3.2.
Service KeyMThis IE is described in subclause 4.3.2.
Default Call HandlingMThis IE is described in subclause 4.3.2.
DP CriteriaMThis IE is described in subclause 4.3.2.
CAMEL Capability HandlingMThis IE is described in subclause 4.3.2. The CAMEL Capability Handling shall indicate CAMEL phase 3 or higher.
VT-CSI contains the following information elements:
Information element name Status Description
gsmSCF AddressMThis IE is described in subclause 4.3.6.
Service KeyMThis IE is described in subclause 4.3.6.
Default Call HandlingMThis IE is described in subclause 4.3.6.
TDP ListMThis IE is described in subclause 4.3.6.
DP CriteriaOThis IE is described in subclause 4.3.6.
CAMEL Capability HandlingMThis IE is described in subclause 4.3.6. The CAMEL Capability Handling shall indicate CAMEL phase 3 or higher.
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4.6.7.3  Provide Subscriber Info  p. 513

4.6.7.3.1  Description  p. 513
This IF is described in TS 23.018; it is used by the HLR to request information (any one or more of subscriber state, subscriber location, IMEI & software version and MS classmark information for the CS domain) from the VLR at any time.

4.6.7.4  Provide Roaming Number  p. 514

4.6.7.4.1  Description  p. 514
This IF is specified in TS 23.018; it is used by the HLR to request a roaming number from the VLR.
4.6.7.4.2  Information Elements  p. 514
Provide Roaming Number contains the following CAMEL specific information elements:
Information element name Status Description
Suppression Of AnnouncementsSThis IE indicates that announcements or tones generated as a result of unsuccessful call establishment shall be suppressed. It shall be present if the HLR received it in the Send Routeing Info IF.
Call Reference NumberMThis IE carries the Call Reference Number provided by the GMSC or the gsmSCF in the Send Routeing Info IF.
GMSC Or gsmSCF AddressMThis IE is the E.164 address of the GMSC for an MT call or the E.164 address of the gsmSCF for a gsmSCF initiated call.
Alerting PatternSThis IE indicates the kind of Alerting Pattern to be applied. It shall be present if the HLR received it from the GMSC or the gsmSCF in the Send Routeing Info IF.
Supported CAMEL Phases in Interrogating NodeSThis IE indicates the CAMEL Phases supported in the GMSC or the gsmSCF. It shall be present if the HLR received it from the GMSC or the gsmSCF in the Send Routeing Info.
Offered CAMEL4 CSIs in Interrogating NodeSThis IE indicates the CAMEL phase 4 CSIs offered in the GMSC or the gsmSCF. It shall be present if the HLR received it from the GMSC or the gsmSCF in the Send Routeing Info.
This IE is described in a Table below.
Suppress VT-CSISThis IE indicates that VT-CSI shall be suppressed for the called party. This IE shall be present if the HLR received it in the Send Routeing Info IF.
OR not Supported In GMSCSThis IE indicates that the VMSC should not attempt to invoke Optimal Routeing of late call forwarding. It shall be present if this IF was triggered by a Send Routeing IF for a gsmSCF initiated call.
Offered CAMEL4 CSIs in Interrogating Node contains the following information elements:
Information element name Status Description
O-CSISThis IE indicates the offer of CAMEL phase 4 O-CSI. It shall be present if the HLR received it from the GMSC or the gsmSCF in the Send Routeing Info.
D-CSISThis IE indicates the offer of CAMEL phase 4 D-CSI. It shall be present if the HLR received it from the GMSC or the gsmSCF in the Send Routeing Info.
T-CSISThis IE indicates the offer of CAMEL phase 4 T-CSI. It shall be present if the HLR received it from the GMSC or the gsmSCF in the Send Routeing Info.
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4.6.8  VLR to HLR information flows  p. 514

4.6.8.1  Insert Subscriber Data ack  p. 514

4.6.8.1.1  Description  p. 514
This IF is used by the VLR to indicate to the HLR the result of the Insert Subscriber Data IF. It is specified in TS 29.002.
4.6.8.1.2  Information Elements  p. 515
Insert Subscriber Data ack contains the following CAMEL specific information elements:
Information element name Status Description
Supported CAMEL PhasesSThis IE identifies which CAMEL phases are supported by the VMSC/VLR. It shall be present when a CSI has been included in the Insert Subscriber Data IF.
Offered CAMEL4 CSIsS This IE indicates the CAMEL phase 4 CSIs offered in the VMSC/VLR. It shall be present if a CSI has been included in the Insert Subscriber Data IF and the "Supported CAMEL Phases" IE indicates support of CAMEL phase 4.
Offered CAMEL4 CSIs contains the following information elements:
Information element name Status Description
O-CSISThis IE indicates the offer of CAMEL phase 4 O-CSI.
D-CSISThis IE indicates the offer of CAMEL phase 4 D-CSI.
VT-CSISThis IE indicates the offer of CAMEL phase 4 VT-CSI.
MT-SMS-CSISThis IE indicates the offer of CAMEL phase 4 MT-SMS-CSI.
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4.6.8.2  Provide Subscriber Info ack  p. 515

4.6.8.2.1  Description  p. 515
This IF is described in TS 23.018; it is used by the VLR to provide the requested information to the HLR.

4.6.8.3  Update Location  p. 515

4.6.8.3.1  Description  p. 515
This IF is used by the VLR to provide information about supported CAMEL phases to the HLR.
4.6.8.3.2  Information Elements  p. 515
Update Location contains the following CAMEL specific information element:
Information element name Status Description
Supported CAMEL PhasesSThis IE indicates which phases of CAMEL are supported. It shall be present if a CAMEL phase higher than phase 1 is supported. Otherwise may be absent.
Offered CAMEL4 CSIsS This IE indicates the CAMEL phase 4 CSIs offered in the VMSC/VLR. It shall be present if the "Supported CAMEL Phases" IE indicates support of CAMEL phase 4.
Offered CAMEL4 CSIs contains the following information elements:
Information element name Status Description
O-CSISThis IE indicates the offer of CAMEL phase 4 O-CSI.
D-CSISThis IE indicates the offer of CAMEL phase 4 D-CSI.
VT-CSISThis IE indicates the offer of CAMEL phase 4 VT-CSI.
MT-SMS-CSISThis IE indicates the offer of CAMEL phase 4 MT-SMS-CSI.
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4.6.8.4  Restore Data  p. 515

4.6.8.4.1  Description  p. 515
This IF is used by the VLR to provide the information about supported CAMEL phases to the HLR.
4.6.8.4.2  Information Elements  p. 516
Restore Data contains the following CAMEL specific information element:
Information element name Status Description
Supported CAMEL PhasesSThis IE indicates which phases of CAMEL are supported. It shall be present if a CAMEL phase higher than phase 1 is supported. Otherwise may be absent.
Offered CAMEL4 CSIsS This IE indicates the CAMEL phase 4 CSIs offered in the VMSC/VLR. It shall be present if the "Supported CAMEL Phases" IE indicates support of CAMEL phase 4.
Offered CAMEL4 CSIs contains the following information elements:
Information element name Status Description
O-CSISThis IE indicates the offer of CAMEL phase 4 O-CSI.
D-CSISThis IE indicates the offer of CAMEL phase 4 D-CSI.
VT-CSISThis IE indicates the offer of CAMEL phase 4 VT-CSI.
MT-SMS-CSISThis IE indicates the offer of CAMEL phase 4 MT-SMS-CSI.
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4.6.9  HLR to GMSC information flows  p. 516

4.6.9.1  Send Routeing Info ack  p. 516

4.6.9.1.1  Description  p. 516
This IF is specified in TS 23.018; it is used by the HLR to transfer the requested routeing information to the GMSC.
4.6.9.1.2  Information Elements  p. 516
Send Routeing Info ack contains the following CAMEL specific information elements:
Information element name Status Description
Location InformationCThis IE indicates the location of the served subscriber.
O-CSISO-CSI is defined in subclause 4.3.1.
This IE identifies the subscriber as having originating CAMEL services.
It shall be present if O-CSI is active, and CFU or CFNRc has been invoked, or if both O-CSI and T-CSI are active.
D-CSISD-CSI is defined in subclause 4.3.2.
This IE identifies the subscriber as having originating CAMEL dialled services.
It shall be present if D-CSI is active, and CFU or CFNRc has been invoked, or if both D-CSI and T-CSI are active.
Subscriber StateCThis IE indicates the state of the MS. The possible values of the IE are:
  • CAMEL Busy: The VLR has indicated that the MS is engaged in a transaction for a mobile originating or terminated circuit-switched call.
  • Network Determined Not Reachable: The HLR or VLR has indicated that the network can determine from its internal data that the MS is not reachable.
  • Assumed Idle: The VLR has indicated that the state of the MS is neither "CAMEL Busy" nor "Network Determined Not Reachable".
  • Not Provided From VLR: The VLR did not provide any information on subscriber state even though it was requested.
T-CSISThis IE is described in a Table below.
This IE identifies the subscriber as having terminating CAMEL services.
It shall be present if T-CSI is active and no Suppress T-CSI indicator is present in the Send Routeing Info IF.
Basic Service CodeCThis IE indicates the type of basic service, i.e. teleservice or bearer service.
CUG Subscription FlagSThis IE indicates if the called party has a CUG subscription. It shall be present only if the T-CSI is active and included in the Send Routing Information ack IF.
Supported CAMEL Phases In VMSCSThis IE indicates the supported CAMEL phases of the VLR. It shall be present if known by the HLR, otherwise it shall be absent.
Offered CAMEL4 CSIs In VMSCSThis IE indicates the CAMEL phase 4 CSIs offered in the VMSC. It shall be present if known by the HLR, otherwise it shall be absent.
VMSC AddressMThis IE indicates the E.164 address of the VMSC in whose area the B subscriber is currently registered.
Location Information is defined in TS 23.018. The following differences apply:
Information element name Status Description
Service area IDC,ESee TS 23.018.
Cell IDC,ESee TS 23.018.
VLR NumberCSee TS 23.018. The HLR shall include the internally stored VLR Number.
Current Location Retrieved-Not applicable.
Location area IDC,ESee TS 23.003.
Selected LSA IdentitySThis IE indicates the LSA identity associated with the current position of the MS. Shall be present if the LSA ID in the subscriber data matches the LSA ID of the current cell. If there are multiple matches the LSA ID with the highest priority shall be sent. See TS 43.073.
E-UTRAN Cell IDC,ESee TS 23.018.
Tracking area IDC,ESee TS 23.018.
T-CSI contains the following information elements:
Information element name Status Description
gsmSCF AddressMThis IE is described in subclause 4.3.5.
Service KeyMThis IE is described in subclause 4.3.5.
Default Call HandlingMThis IE is described in subclause 4.3.5.
TDP ListMThis IE is described in subclause 4.3.5.
DP CriteriaSThis IE is described in subclause 4.3.5. The HLR shall send only the criteria associated with DP T_Busy or DP T_No_Answer, if available.
CAMEL Capability HandlingCThis IE is described in subclause 4.3.5. If this IE is absent then this indicates that CAMEL phase 1 support is requested.
Offered CAMEL4 CSIs In VMSC contains the following information elements:
Information element name Status Description
O-CSISThis IE indicates the offer of CAMEL phase 4 O-CSI. It shall be present if known by the HLR, otherwise it shall be absent.
D-CSISThis IE indicates the offer of CAMEL phase 4 D-CSI. It shall be present if known by the HLR, otherwise it shall be absent.
VT-CSISThis IE indicates the offer of CAMEL phase 4 VT-CSI. It shall be present if known by the HLR, otherwise it shall be absent.
MT-SMS-CSISThis IE indicates the offer of CAMEL phase 4 MT-SMS-CSI. It shall be present if known by the HLR, otherwise it shall be absent.
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4.6.10  GMSC to HLR information flows  p. 517

4.6.10.1  Send Routeing Info  p. 517

4.6.10.1.1  Description  p. 517
This IF is described in TS 23.018; it is used to request information from the HLR to route an MT call.
4.6.10.1.2  Information Elements  p. 518
Send Routeing Info contains the following CAMEL specific information elements:
Information element name Status Description
Alerting PatternSThis IE indicates the kind of Alerting Pattern to be applied. It shall be present if it was received from the gsmSCF or set by the gsmSSF.
Suppression Of AnnouncementSThis IE indicates that announcements or tones generated as a result of unsuccessful call setup shall be suppressed.
It shall be present in the interrogation if available, i.e. when it has been received from the gsmSCF.
Suppress T-CSISThis IE indicates that T-CSI shall be suppressed.
It shall always be present in the second interrogation or if it was received from the gsmSCF due to an Initiate Call Attempt IF.
Supported CAMEL PhasesMThis IE lists the supported CAMEL phases in the GMSC.
Offered CAMEL4 CSIsMThis IE indicates the CAMEL phase 4 CSIs offered in the GMSC.
This IE is described in a Table below.
Call Reference NumberMThis IE carries the Call Reference Number allocated for the call by the GMSC.
It shall be allocated once per call and present in both first and second interrogations.
GMSC AddressMThis IE is the E.164 address of the GMSC.
Call Diversion Treatment IndicatorSThis IE indicates whether or not the call can be forwarded using the Call Forwarding or Call Deflection supplementary services.
It shall be present if it was received within Forward Service Interaction Indicator in Service Interaction Indicators Two from the ISUP Initial Address Message or previous CAMEL processing.
Offered CAMEL4 CSIs contains the following information elements:
Information element name Status Description
O-CSISThis IE indicates the offer of CAMEL phase 4 O-CSI.
D-CSISThis IE indicates the offer of CAMEL phase 4 D-CSI.
T-CSISThis IE indicates the offer of CAMEL phase 4 T-CSI.
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4.6.11  VMSC to GMSC information flows  p. 518

4.6.11.1  Resume Call Handling  p. 518

4.6.11.1.1  Description  p. 518
This IF is described in TS 23.079, it is used to request the GMSC to take over handling the call so that it can be forwarded from the GMSC.
4.6.11.1.2  Information Elements  p. 518
Resume Call Handling contains the following CAMEL specific information elements:
Information element name Status Description
O-CSISThis IE indicates that CAMEL handling applies for an optimally routed late forwarded call.
This IE shall be present if CAMEL handling applies; otherwise it shall be absent.
Trigger criteria for DP Collected_Information, if present, shall be omitted from this IF.
Trigger criteria for DP Route_Select_Failure, if present, shall be included in this IF.
D-CSISThis IE indicates that CAMEL handling applies for an optimally routed late forwarded call.
This IE shall be present if CAMEL handling applies; otherwise it shall be absent.
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4.6.12  MSC to VLR information flows  p. 519

4.6.12.1  Send Info For ICA  p. 519

4.6.12.1.1  Description  p. 519
This IF is used to request the VLR to provide information to handle an outgoing call leg created by the gsmSCF.
4.6.12.1.2  Information Elements  p. 519
Information element name NP Description
Called NumberMThis IE indicates the E.164 number of the call leg destination.
IMSIMThis IE is the IMSI of the served CAMEL subscriber.
CUG IndexCFor the definition of this IE, see TS 23.085.
Suppress Preferential CUGCFor the definition of this IE, see TS 23.085.
Suppress CUG Outgoing AccessCFor the definition of this IE, see TS 23.085.
Suppress Outgoing Call BarringCThis IE indicates that outgoing call barrings shall be suppressed for the call leg.
Suppress D-CSISThis IE indicates that D-CSI shall be suppressed. It shall always be present in the second interrogation.
N-CSI AvailableSThis IE indicates that N-CSI is available in MSC. It shall be present in the first interrogation if N-CSI is available in the MSC.
Non-CUG CallSThis IE indicates that no parameters for CUG should be used for the call. It shall be present if received from gsmSCF.
CUG Interlock CodeSFor the definition of this IE, see TS 23.085. It shall be present if received from gsmSCF.
Outgoing AccessSFor the definition of this IE, see TS 23.085. It shall be present if received from gsmSCF.
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4.6.12.2  Send Info For Incoming Call  p. 519

4.6.12.2.1  Description  p. 519
This IF is described in TS 23.018; it is used to request the VLR to provide information to handle an incoming call.
4.6.12.2.2  Information Elements  p. 519
Send Info For Incoming Call contains the following CAMEL specific information elements:
Information element name Status Description
Suppress VT-CSISThis IE indicates that VT-CSI shall be suppressed. It shall never be present in the first interrogation; it shall always be present in the second interrogation.
Call Diversion Treatment IndicatorSThis IE indicates whether or not the call can be forwarded using the Call Forwarding or Call Deflection supplementary services. It shall be present if received within the Forward Service Interaction Indicator in the Service Interaction Indicators Two from the IAM or previous CAMEL processing.
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4.6.12.3  Send Info For MT Reconnected Call  p. 519

4.6.12.3.1  Description  p. 519
This IF is used to request the VLR to provide information to handle a reconnected MT call.
4.6.12.3.2  Information Elements  p. 519
Information element name Required Description
Called NumberME.164 number of the call destination.

4.6.12.4  Send Info For Outgoing Call  p. 520

4.6.12.4.1  Description  p. 520
This IF is described in TS 23.018; it is used to request the VLR to provide information to handle an outgoing call.
4.6.12.4.2  Information Elements  p. 520
Send Info For Outgoing Call contains the following CAMEL specific information elements:
Information element name Status Description
Suppress O-CSISThis IE indicates that O-CSI shall be suppressed. It shall always be present in the second interrogation.
Suppress D-CSISThis IE indicates that D-CSI shall be suppressed. It shall always be present in the second interrogation.
N-CSI AvailableSThis IE indicates that N-CSI is available in MSC. It shall be present in the first interrogation if N-CSI is available in the MSC.
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4.6.12.5  Send Info For Reconnected Call |R5|  p. 520

4.6.12.5.1  Description  p. 520
This IF is used to request the VLR to provide information to handle a reconnected MO call.
4.6.12.5.2  Information Elements  p. 520
Information element name Status Description
Called NumberMThis IE indicates the E.164 number of the call destination.
Bearer ServiceS,EThis IE indicates the bearer service required for the MO call, derived from the CS bearer capability information received in the setup request from the MS. One of bearer service or teleservice shall be present.
TeleserviceS,Ehis IE indicates the teleservice required for the MO call, derived from the CS bearer capability information received in the setup request from the MS or from the emergency setup request from the MS. One of bearer service or teleservice shall be present.
CUG IndexSFor the definition of this IE, see TS 23.085. It shall be present if it was received in the setup request from the MS.
Suppress Preferential CUGSFor the definition of this IE, see TS 23.085. It shall be present if it was received in the setup request from the MS.
Suppress CUG Outgoing AccessSFor the definition of this IE, see TS 23.085. It shall be present if it was received in the setup request from the MS.
Suppress O-CSISThis IE indicates that O-CSI shall be suppressed. It shall always be present in the second interrogation.
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