Data roaming indicator AVP in the diameter request

Question

Please any one tell me how we will identify the roaming/non-roaming subscribers from the diameter CCR initial request.

Answer 1

You didnt mention which Diameter protocol you are using. But anyway I dont think there is such an AVP.

In different protocols you have different AVPs that can give you hints about the user HPLMN and than you can compare them to whatever you have and understand if the user is from your PLMN.

Answer 2

For Gx reference point, you have two ways:

1. using MCC MNC

AVP name: <3GPP-SGSN-MCC-MNC>

AVP code: <18>

Anything is not your home (or national roaming MNC), is international roaming

2. Using SGSN IP adress

AVP name <3GPP-SGSN-Address>

AVP code: <6>

If you don't recognize IP adress of home SGSN it is roaming.

I have tested both on E/// equipment.

Answer 3

Too new here to vote for the answer above, but MCC MNC is what we use. If they don't match your home networks' MCC's and MNC's, then assume roaming.