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3 Signalling aspects

Table 7-2 – Mapping reference points to interfaces

DSN architecture for content services
Interface description
Interfaces Mapping reference points

Is-a A2 Interface between SCF-PE and CSAF-PE
Is-e C6, C8 Interface between SCF-PE and end user
Is-n C1 Interface between SCF-PE and NEF-PE
Is-s C2 Interface between SCF-PE and SCF-PE
Ic-c C10 Interface between CDF-PE and CDF-PE
Ie-a A1 Interface between CSAF-PE and end user
Ie-c C9 Interface between CDF-PE and end user

7.2 PEs and interfaces when deploying MMTel service over DSN

Figure 7-2 illustrates an example of grouping functions when deploying MMTel service over DSN.

Figure 7-2 – PEs and interfaces of DSN architecture for MMTel service
7.2.1 Mapping functions into PEs

The mapping of functions into PEs is shown in Table 7-3.

Table 7-3 – Mapping functions into PEs

PE Description Functions included
AF-PE Physical entity for the Application support functions and service support
application function functions for MMTel service
SCF-PE Physical entity for the service Service control functions, resource location
control function functions, etc.

NEF-PE Physical entity for node NEFs, including authentication and authorization
enrolment functions to a new enrolling DSN node, etc.
End user Physical entity for the end-user End-user functions
function
7.2.2 Mapping reference points to interfaces

The mapping of reference points to interfaces is shown in Table 7-4.

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