<p>Hi <a class="user-mention" data-hovercard-user-id="5987360" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/uts09">@uts09</a> ,<br>
I think there are several misunderstandings.</p>
<ol>
<li>scscf.xml is read by the cdp module, not by the ims_isc module<br>
1a) The SAR message to the HSS is not triggered by the ims_isc module, but by the ims_registrar_scscf module, afaik</li>
<li>The HSS does not process SIP requests, but it processes DIAMETER</li>
<li>Are you sure, you have a Scenario, where you send an Initial INVITE with a PSI in the Request Line?</li>
<li>Have you configured the PSI at the HSS?</li>
</ol>

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