Remote Party ID or P-asserted Identity

Hi, I’ve got a sip provider that is requiring the trunk to be setup using Remote Party ID or P-asserted Identity. They say that the sip header in the invite must contain the username instead of the DID that is making the call. Does anyone know if this feature is possible when setting up a sip trunk in Vital PBX and can you provide an example of the configuration?

You can do that under the custom header tab in the trunk

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