09. How do you make use of MSISDN?

I can see MSISDN in your example. Is MSISDN present in NAT log? In case it is, we can use MSISDN as a correlator instead of PrivateIP. In that case we will avoid the logic of Zone parsing which will save processing time.

[Parinya] Yes, there is MSISDN in NAT log. With MSISDN existing in NAT log, does it affect your proposed solution? Does AAA Radius log still require?

[Alex] Great! Then we will use MSISDN as a correlator instead of PrivateIP and we do not need to parse Zone. But, yes we still need AAA because we are also using IMSI and IMEI. Everything will be the same, just MSISDN will replace PrivateIP. Like this:

PublicIP:Port –> MSISDN

MSISDN –> MSISDN:IMSI:IMEI