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Reply To: IN in GSM

Wallis Dudhnath

Hi Eleni,

You will need to confirm that the Roamers have CAMEL flags set in the HPLMN. You will need to check this with the HPLMN CSP. Next step is to use a protocol analyser with a trace to look at the CAP V2 and MAP messages that are exchanged between the VPLMN (your Network) and the HPLMN. There maybe a node in the signalling chain that is “filtering” the IDP. Check what SS7 Policing Masks you have on your egress routes.

VBR/ Wallis Dudhnath