@@ -1705,7 +1705,8 @@ dlg_bridge("sip:user@kamailio.org", "sip:annoucement@kamailio.org",

    Meaning of the parameters is as follows:

      * callid - SIP call-id.

      * ftag - SIP From tag.

-     * ttag - SIP To tag.

+     * ttag - SIP To tag (it can be empty string to match a dialog during

+       call setup (eg., match for CANCEL)).

    This function can be used from BRANCH_ROUTE, REQUEST_ROUTE,

    ONREPLY_ROUTE and FAILURE_ROUTE.