Basic call state model
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In Intelligent Network and CAMEL switching, a BCSM is a Basic Call State Model
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[edit] Types
- O-BCSM (Originating BCSM)
- T-BCSM (Terminating BCSM)
[edit] State machine description
In the following IN BCSMs, bold Detection Points and Points In Call are also present in the CAMEL Ph1 subset.
TODO: Expand to Ph2,3,4
[edit] O-BCSM
[edit] Points in call
- 1. O_Null & Authorize Origination Attempt
- 2. Collect_info (Merged with 1. in CAMEL Ph1)
- 3. Analyze_Info
- 4. Routing & Alerting (Merged with 3. in CAMEL Ph1)
- 5. O_Active
- 6. O_Exception
[edit] Detection Points
- 1 Origination_Attempt_Authorized
- 2 Collected_Info
- 3 Analyzed_Info
- 4 Route_Select_Failure
- 5 O_Called_Party_Busy
- 6 O_No_Answer
- 7 O_Answer
- 8 O_Mid_Call
- 9 O_Disconnect
10 O_Abandon
[edit] T-BCSM
[edit] Points in call
- 7. T_Null & Authorize Termination_Attempt
- 8. Select_Facility & Present_Call
- 9. T_Alerting (Merged with 8. in CAMEL Ph1)
- 10. T_Active
- 11. T_Exception
[edit] Detection Points
- 12 Termination_Attempt_Authorized
- 13 T_Called_Party_Busy
- 14 T_No_Answer
- 15 T_Answer
- 16 T_Mid_Call
- 17 T_Disconnect
- 18 T_Abandon
[edit] Messages
- RRB (Request Report BCSM)
- AC (Apply Charging)
