<div dir="ltr"><div>Hello.<br>I have read this article about push notification support according to rfc 8599 in Opensips 3.1<br><a href="https://blog.opensips.org/2020/05/07/sip-push-notification-with-opensips-3-1-lts-rfc-8599-supportpart-i/" target="_blank">https://blog.opensips.org/2020/05/07/sip-push-notification-with-opensips-3-1-lts-rfc-8599-supportpart-i/</a></div><div><br>But I stay confused about one thing.It may be considered to be a  "newbie question", but... What can be an "entity" (3rd party app/API)<br>with help of which I can create a subscription for Message Service (for example Firebase) to get the needed "pn" parameters to be inserted into the register sip request?<br><br><br>Best wishes,</div><div>Serhii Pysanko.</div><br><div id="mt-signature">
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                    <a id="signatureLink-logo" href="https://mailtrack.io?utm_source=gmail&utm_medium=signature&utm_campaign=signaturevirality11&" class="" style="text-decoration:none">
                        <img src="https://s3.amazonaws.com/mailtrack-signature/sender-notified-72.gif" alt="Mailtrack" class="" width="32" height="32">
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                    <span style="color:#777">Sender notified by</span> <br>
                    <a id="signatureLink-text" href="https://mailtrack.io?utm_source=gmail&utm_medium=signature&utm_campaign=signaturevirality11&" class="mt-install" style="color:#4374f7">Mailtrack</a>
                    
    </td><td><span style="color:transparent;font-size:0">09/15/22, 10:08:33 AM</span></td>

                
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