<p></p>
<p>If you handle registrations on the same system, then the usrloc (starting with v5.4) can send SIP OPTIONS keepalive to any contact, no matter is udp/tcp/tls.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you commented.<br />Reply to this email directly, <a href="https://github.com/kamailio/kamailio/issues/2564#issuecomment-735273458">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABO7UZO5Z46LJISYPFJ35GDSSE6RPANCNFSM4UF275CA">unsubscribe</a>.<img src="https://github.com/notifications/beacon/ABO7UZO46UJ5JEDQHOLBFX3SSE6RPA5CNFSM4UF275CKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOFPJWD4Q.gif" height="1" width="1" alt="" /></p>
<script type="application/ld+json">[
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"target": "https://github.com/kamailio/kamailio/issues/2564#issuecomment-735273458",
"url": "https://github.com/kamailio/kamailio/issues/2564#issuecomment-735273458",
"name": "View Issue"
},
"description": "View this Issue on GitHub",
"publisher": {
"@type": "Organization",
"name": "GitHub",
"url": "https://github.com"
}
}
]</script>