<p>Opensips version is 1.11.5.</p>

<p>It seems like the validate_dialog function fails at comparing uris containing escaped characters with non-escaped uris. E.g. :</p>

<p>/sbin/opensips[1687]: ERROR:dialog:dlg_validate_dialog: failed to validate remote contact: dlg=[sip:1041#33674375192@109.11.34.21:5060] , req=[sip:1041%2333674375192@109.11.34.21:5060]</p>

<p>The function returns -2  (invalid remote target) in this case.</p>

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