[Freeswitch-users] Is this a correct SIP message flow?

[Stephen Wilde]

Hi,
I have see that Freeswitch sends many "487 Sessuin Ternubatedd-" just after
the call is disconnected by the caller.
Are all these "487 Session Terminated" or none?
To me it seems to be a retransmission, but why happens? Freeswitch waits a
response to the 200 OK ?

Stephen



No.     Time        Source                Destination           Protocol
Info
      1 0.000000    IP-Client         IP-Freeswitch           SIP/SDP
 Request: INVITE sip:xxxxxxxxxx at IP-Freeswitch;user=phone, with session
description
      2 0.000505    IP-Freeswitch           IP-Client         SIP
 Status: 100 Trying

      3 5.760819    IP-Freeswitch           IP-Client         SIP/SDP
 Status: 183 Session Progress, with session description

      4 14.250804   IP-Freeswitch           IP-Client         SIP/SDP
 Status: 200 OK, with session description
      5 14.264365   IP-Client         IP-Freeswitch           SIP
 Request: ACK sip:xxxxxxxxxx at IP-Freeswitch:5060

      8 194.265481  IP-Client         IP-Freeswitch           SIP
 Request: BYE sip:xxxxxxxxxx at IP-Freeswitch:5060
      9 194.266483  IP-Freeswitch           IP-Client         SIP
 Status: 200 OK
     10 194.266538  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     11 194.766725  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     12 195.766983  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     13 197.766163  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     14 201.766806  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     15 205.766738  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     16 209.766724  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     17 213.766809  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     18 217.767843  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     19 221.767900  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
     20 225.767845  IP-Freeswitch           IP-Client         SIP
 Status: 487 Session Terminated
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