B.4 Example scenarios

12.053GPPSubscriber Related Call and Event DataTS

This clause contains a number of example scenarios illustrating the purpose and practical usage of the various types of records defined in the previous subclauses. These examples are by no means exhaustive.

For the purpose of these examples the following assumptions have been made:

– that the MSC and VLR are co-located;

– that the records are sent to an OS "Administration/ Billing Center (ADC/BC)" for post-processing;

– that the generation of all of the record types described in this annex has been enabled;

– that the HLR interrogation records are produced in the HLR and not the interrogating MSC;

– that supplementary service actions are recorded in separate event records.

The following conventions have been used for the figures contained within this subclause:

1) Network connections and signalling transactions are illustrated by means of solid lines and referenced by number e.g. (1).

2) Operation & Maintenance actions, such as the transfer of call records, are represented by means of dotted lines and referenced by letter e.g. (A).

3) The ADC/BC has been included in some, but not all, of the examples. The only reason for this decision is to simplify the resulting figures. For the avoidance of doubt, the presence of an ADC/BC is assumed even if not explicitly included.

The following examples are included:-

1) Mobile to Land (outgoing) call;

2) Land to Mobile (incoming) call;

3) Mobile to Mobile call within the same network;

4) Incoming call to a roaming subscriber;

5) Incoming call to a PLMN Service Centre;

6) Call Forwarding Unconditional;

7) Call Forwarding conditional (on Busy);

8) Delivery of a Mobile Terminated Short Message;

9) Call Hold and Multi-party services;

10) Outgoing call handled by CAMEL;

11) Incoming call handled by CAMEL without redirection;

12) Incoming call to a roaming subscriber handled by CAMEL;

13) Incoming call handled by CAMEL with redirection decided and forwarding leg handled by CAMEL;

14) Incoming call handled by CAMEL without redirection and forwarded early using GSM SS but controlled by CAMEL;

15) Incoming call handled by CAMEL without redirection and forwarded late using GSM SS but controlled by CAMEL;

16) Early forwarded call controlled by CAMEL;

17) Late forwarded call controlled by CAMEL;

18) Incoming call handled by CAMEL with redirection initated by CAMEL feature.