Functionality
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Purpose / supports
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Restrictions
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Triggering on MO, MT and forwarded calls.
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Call screening
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Full VPN
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Call Forwarding
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Call Redirection
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Call Rerouting
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Follow-on calls
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In-band user interaction (DTMF)
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Tones and announcements
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Charging operations
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Pre-paid (MO, MT, CF)
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Free-phone
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Premium rate
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Personal Discount
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Location Dependent discount
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Reverse Charging
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CSE provided e-parameters
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CAMEL2 new detection points (Abandon, Busy, NotReachable, NoAnswer, RouteSelectFailure cases)
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· Cleaner termination of relationship.
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· Better pre-paid service.
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· Hunting type of services.
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CAMEL3 new trigger detection points.
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· To trigger on demand only, e.g. for hunting services.
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Triggering criteria
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· To reduce CSE & SSP load
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Any Time Interrogation. Enhanced with CAMEL3 current location retrieval, and ATI for GMLC. CAMEL4 enhances this to PS domain.
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The CSE may request HLR to provide subscriber status and/or location information at any time.
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ATI for GMLC
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USSD communication between MS and CSE
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USSD call-back for pre-paid roaming
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Control & enquiry of IN services
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Control of north American carrier information
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Enhances pre-paid·
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CSE based carrier selection
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Selecting correct long distance network for user interaction
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Notification of supplementary service (CCBS, ECT, CD and MPTY) invocation to CSE
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Call Gapping
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· To control CSE overload situations within HPLMN
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For CS calls only. Not for SMS or GPRS.
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MT call triggering in VMSC-B
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· To control MT supplementary services (CW, hold, CF, CD, ECT, MPTY)
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· Pre-paid for MT air-time charge (1st minute free, e.g. in USA)
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Abandon as an EDP-R
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Enhanced FreeFormatCharging data (40 octets -> 160 octets)
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· Makes the CSE service logic easier
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Reporting of MSRN/FTN to CSE
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· Charging control of optimally routed calls
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CSE-HLR interface: ATM/ATSI/NSDC
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Multiple Subscriber Profile phase 2
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CSE can control CF, barring supplementary services.
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Off-line subscription control based on VPLMN / time-of-day
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Virtual operators
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Subscribed dialled services (D-CSI)
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· HPLMN specific service numbers
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· No call supervision
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Serving Network Dialled services (N-CSI)
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· VPLMN specific service numbers
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· No call supervision
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SMS control (CS+PS)
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· Enhances pre-paid.
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· Enhances VPN
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· Not content based
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Inter-working with GPRS
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· Not content based
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CS Mobility management notifications
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· CSE can monitor location / reachability
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Service Interaction Indicators
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· CSE can control inter-working with supplementary services (CW, hold, CF, CD, ECT, MPTY).
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· Multiple subscriber profile phase 2
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Interactions with Optimal Routing
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· CSE can control usage of OR
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Call Party Handling
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Wake-up calls
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Conference calling
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Parallel hunting
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Click-to dial
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IN based CCBS
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Mid call procedure for MO and MT calls
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Control CPH configuration during call.
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Automatic call collect
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CAMEL for IMS
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IMS pre-paid
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Convergence to CS and GPRS services
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Inclusion of flexible tone injection
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Enhancements of pre-paid warning tones
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Various informative tones
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Provision of location information of called subscriber (Alerting phase)
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The location of B-subscriber at the beginning of the call provided to service logic
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Notification of GPRS mobility management to CSE
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CSE can monitor location / reachability in PS side
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Inclusion of ODB data in the CSE-HLR interface
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Location information during an ongoing call (Handover DP)
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Charging based on current location, for inter-PLMN and/or inter-system handovers
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Transfer of the IMEI (with software version) and MS class mark to the CSE
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allow the gsmSCF to determine information about the capabilities of the ME
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Any Time Interrogation from CSE to MNP-SRF
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Number portability query for prepay calls
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Partial implementation of CAMEL phase 4
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A functional entity (VMSC, GMSC or SGSN) may support the complete CAMEL phase4 functionality or, as a network option, it may support the complete CAMEL phase3 functionality and a partial implementation of CAMEL phase4.
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