<p>To get get the duplicate error you should send other two register messages for the user</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br>Reply to this email directly or <a href="https://github.com/OpenSIPS/opensips/issues/764#issuecomment-185054200">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AFOcid1QN4v_UIWi-30Cp1J_yFgiC4Amks5plA6pgaJpZM4HHvEK.gif" width="1" /></p>
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