I have been able to write a standalone basic PCRF code in our software.
I had also written them using the Gx and RX interfaces (i.e using the diameter protocol). There was no time to test this feature.
Now I find flaws in my design regarding the Diameter while testing.
Initially the SIP (i.e ike IMS) was sending the request to PGW to create the voice bearer. Now my initial implemetation of Rx i thought the TFT was calculated in the SIP and sent across in the RX, but now when revisiting the code, i feel, that there was no such parameter to pass this info to the PCRF from SIP.
Now my doubt is, how this info related to TFT is being passed across to PCRF. Is it through the "Flows".
If so how to get the TFT in the PCRF to send back to PGW...I have missed this part of the design as i was looking more into the QOS..
Any help is greatly appreciated.