I am experiencing this weir issue.
On some calls I don't get 200 OK and ACK and so the is dropped because INVITE expres.
this is the log about 3 calls, the first ans second are without 200 OK ans ACK the tird one is with them and it is estabilished in a good way.
A is the voip customers
B is ser proxy
C is the PSTN gateway
7331.881781 A -> B SIP/SDP Request: INVITE  sip:0828963359@voip.prova.it, with session description
7331.883158 B -> A SIP Status: 407 Proxy  Authentication Required
7331.987931 A -> B SIP Request: ACK sip:0828963359@voip.prova.it
7331.988081 A -> B SIP/SDP Request: INVITE sip:0828963359@voip.prova.it, with session description
7332.018157 B -> A SIP Status: 100 trying -- your call is important to us
7332.018602 B -> C SIP/SDP Request: INVITE sip:0828963359@C:5060, with session description
7332.114175 C -> B SIP Status: 100 Trying
7332.176249 C -> B SIP Status: 183 Session Progress
7332.177555 B -> A SIP Status: 183 Session Progress
7333.637122 C -> B SIP/SDP Status: 183 Session Progress, with session description
7333.638364 B -> A SIP/SDP Status: 183 Session Progress, with session description
7377.818129 B -> A SIP Status: 408 Request Timeout
7377.825608 B -> C SIP Request: CANCEL sip:0828963359@C:5060
7377.857091 A -> B SIP Request: ACK sip:0828963359@voip.prova.it
7377.897414 C -> B SIP Status: 200 OK
7377.898809 C -> B SIP Status: 487 Request Terminated
7377.899679 B -> C SIP Request: ACK sip:0828963359@C:5060

7394.152872 A -> B SIP/SDP Request: INVITE sip:0828963359@voip.prova.it, with session description
7394.154283 B -> A SIP Status: 407 Proxy Authentication Required
7394.263174 A -> B SIP Request: ACK sip:0828963359@voip.prova.it
7394.314345 A -> B SIP/SDP Request: INVITE sip:0828963359@voip.prova.it, with session description
7394.344910 B -> A SIP Status: 100 trying -- your call is important to us
7394.345321 B -> C SIP/SDP Request: INVITE sip:0828963359@C:5060, with session description
7394.439264 C -> B SIP Status: 100 Trying
7394.506851 C -> B SIP Status: 183 Session Progress
7394.508176 B -> A SIP Status: 183 Session Progress
7395.305016 C -> B SIP/SDP Status: 183 Session Progress, with session description
7395.306549 B -> A SIP/SDP Status: 183 Session Progress, with session description
7439.955201 B -> A SIP Status: 408 Request Timeout
7439.962438 B -> C SIP Request: CANCEL sip:0828963359@C:5060
7439.997963 A -> B SIP Request: ACK sip:0828963359@voip.prova.it
7440.042139 C -> B SIP Status: 200 OK
7440.046886 C -> B SIP Status: 487 Request Terminated
7440.047528 B -> C SIP Request: ACK sip:0828963359@C:5060

7460.312529 A -> B SIP/SDP Request: INVITE sip:0828963359@voip.prova.it, with session description
7460.314196 B -> A SIP Status: 407 Proxy Authentication Required
7460.343504 A -> B SIP Request: ACK sip:0828963359@voip.prova.it
7460.417725 A -> B SIP/SDP Request: INVITE sip:0828963359@voip.prova.it, with session description
7460.447096 B -> A SIP Status: 100 trying -- your call is important to us
7460.447528 B -> C SIP/SDP Request: INVITE sip:0828963359@C:5060, with session description
7460.545094 C -> B SIP Status: 100 Trying
7460.613676 C -> B SIP Status: 183 Session Progress
7460.614909 B -> A SIP Status: 183 Session Progress
7461.520262 C -> B SIP/SDP Status: 183 Session Progress, with session description
7461.521608 B -> A SIP/SDP Status: 183 Session Progress, with session description
7463.544538 C -> B SIP/SDP Status: 200 OK, with session description
7463.546046 B -> A SIP/SDP Status: 200 OK, with session description
7463.586935 A -> B SIP Request: ACK sip:0828963359@C:5060
7463.595536 B -> C SIP Request: ACK sip:0828963359@C:5060
7511.516164 A -> B SIP Request: BYE sip:0828963359@C:5060
7511.532938 B -> C SIP Request: BYE sip:0828963359@C:5060
7511.606909 C -> B SIP Status: 200 OK
7511.607877 B -> A SIP Status: 200 OK
 
Should this behavior be triggered by some misconfiguration in my ser.cfg or it is only about the PSTN gateway not sending 200 OK?
 
Many Thnaks
Rosario
 
 
 
 
 
 
 
 
 
 
Rosario Pingaro
 
D. Lgs 196/2003
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