Number Processing in the CAMEL Event Receiving Flow

Number processing in the CAMEL event receiving flow refers to a process of number change and number normalization for the numbers carried in the Connect message that is sent from the SCP to the SSP. The numbers carried in the Connect message include the called number, redirecting number, and original called number. Figure 1 shows the flowchart of number processing in the CAMEL event receiving flow.

Figure 1 Flowchart

 

NOTE: 

In the preceding figure, the optional tables are highlighted by dotted-line frames.

Pay attention to the following items:

• The Bill Subscriber Type Control table is queried only when the OCSI is triggered.
• The normalization flow of the original called number, called number, and redirecting number is similar. For details, see Number Normalization in the Connect Flow.
• A redirecting number refers to the redirecting_partyid information element carried in the Connect message sent by the SCP when an IN subscriber registers with a special service.
• Number processing in the CAMEL event receiving flow is applicable to both the OCSI and TCSI services.

Detail: 

Table Description

Table	Command	Input Parameter	Output Parameter	Function Description
Bill Subscriber Type Control table	ADD BLLUTCTL	Function type Service key SCP address Call prefix DP number	User type Cover dialed number flag Cover caller number flag	Based on the function type, service key, SCP address, and call prefix, the MSOFTX3000 queries the Bill Subscriber Type Control table to determine whether to replace the calling number or called number in CDRs with the new number in the Connect message sent by the SCP.