Excuse me. I have created a new thread by mistake.
...


Hello Hero,

Thanks for your help.
May be I'm loosing something. I have changed my config as you suggested (I thing so...):




if (t_check_status("486|408")) {

                
        revert_uri();        
        prefix("voicemail");        
        remove_hf("P-App-Name");
        append_hf("P-App-Name: voicemail\r\n"); 

        append_hf("P-App-Param: mod=box;usr= $rU;dom=sipproxy.a.com;uid=$
rU;did=sipproxy.a.com;\r\n");        
        rewritehostport("192.168.0.197:5080");
        $du = $null;
        #$du = "sip:192.168.0.197";
        append_branch();
        t_relay();
       
    }
}
Kamailio sends back 200 OK to the UAC that originated the call, but it never sends the new INVITE




|Time     | 192.168.3.20                  
        | 192.168.0.167                         |
|         |                   | 192.168.0.197     |                  
|3,151    |         INVITE SDP ( telephone-event)          |                   |SIP From: sip:4095@192.168.0.197 To:sip:4440@192.168.0.197
|         |(5060)   ------------------>  (5060)   |                   |
|3,159    |         407 Proxy Authentication Required          |                   |SIP Status
|         |(5060)   <------------------  (5060)   |                   |
|3,161    |         ACK       |                   |                   |SIP Request
|         |(5060)   ------------------>  (5060)   |                   |
|3,161    |         INVITE SDP ( telephone-event)          |                   |SIP From: sip:4095@192.168.0.197 To:sip:4440@192.168.0.197
|         |(5060)   ------------------>  (5060)   |                   |
|3,174    |         100 trying -- your call is important to us          |                   |SIP Status
|         |(5060)   <------------------  (5060)   |                   |
|3,174    |                   |         INVITE SDP ( telephone-event)          |SIP Request
|         |                   |(5060)   ------------------>  (5060)   |
|3,176    |                   |         100 Trying|                   |SIP Status
|         |                   |(5060)   <------------------  (5060)   |
|3,177    |                   |         486 Busy Here                 |SIP Status
|         |                   |(5060)   <------------------  (5060)   |

|3,180    |                   |         ACK       |                   |SIP Request
|         |                   |(5060)   ------------------>  (5060)   |
|3,195    |         200 OK SDP ( telephone-event)          |                   |SIP Status
|         |(5060)   <------------------  (5060)   |                   |
|3,200    |         ACK       |                   |                   |SIP Request
|         |(5060)   ------------------>  (5060)   |                   |
|3,213    |         RTP (GSM) |                   |                   |RTP Num packets:204  Duration:4.069s SSRC:0x8494958
|         |(49222)  ------------------>  (10028)  |                   |
|7,288    |         BYE       |                   |                   |SIP Request
|         |(5060)   ------------------>  (5060)   |                   |
|7,295    |         200 OK    |                   |                   |SIP Status
|         |(5060)   <------------------  (5060)   |                   |

what am I loosing?

Regards