Hi,<div><br></div><div>I am integrated sylkserver with kamailio server for conference. Here i am facing issues while adding participants to conference by using REFER.</div><div><br></div><div>Following is event flow for my conference and refer request with sylkserver. Here I am getting forbidden in NOTIFY, and no call is initiated to participants.</div>
<div><br></div><div>Please suggest me if there is any changes required at sylkserver.</div><div><br></div><div><br></div><div>Client                                        Proxy(kamailio)                            Sylkserver</div>
<div>========                            ================                    ===========</div><div>     |                                                    |                                              |    </div><div>     |                                                    |                                              |</div>
<div>     |       ----- INVITE---------------->           |       ----- INVITE---------------->     |</div><div>     |       <-------100 Trying------               |       <-------100 Trying------         |</div>
<div>     |       <-------180 Ringing------             |     <-------180 Ringing------         |</div><div>     |        <-------200 OK ---------              |      <-------200 OK------              |</div><div>
     |       ----- ACK---------------->              |      ----- ACK---------------->          |</div><div>     |                                                    |                                              |</div>
<div><div>     |      ----- REFER ---------------->          |       ----- REFER -------->           |</div><div>     |      <-------202 Accepted ------          |      <-------202 Accepted ------    |</div><div>
<div>     |                                                    |                                              |</div><div>     |      <----NOTIFY 100 Trying --          |      <----NOTIFY 100 Trying --   |</div><div>
     |   --- 200  Notification Delevered-->   | --- 200  Notification Delevered-->   |</div><div>     |                                                    |                                              |</div><div>     |                                                    |                                              |</div>
</div></div><div>     |      ----- SUBSCRIBE---------------->   |       ----- SUBSCRIBE-------->    |</div><div>     |     <-------400 Bad request ----         |      <-------400 Bad request ----  |</div><div>
     |                                                    |                                              |</div><div>     |                                                    |                                              |</div>
<div>     |   <----NOTIFY 403 Forbidden --       | <----NOTIFY 403 Forbidden --   |</div><div>     |   --- 200  Notification Delevered-->   | --- 200  Notification Delevered-->   |</div><div>     |                                                    |                                              |</div>
<div>     |                                                    |                                              |</div><div>     |                                                    |                                              |</div>
<div>     |                                                    |                                              |</div><div>     |                                                    |                                              |</div>
<div><br></div><div><br></div><div>Regards,</div><div>Ch V Ramanjaneyulu<br><div><br></div><div><br></div></div>