[Spce-user] Spce timeout for T.38 Reinvites

Matthew Ogden matthew at tenacit.net
Sat Jan 18 03:56:10 EST 2014


Thanks Ivan!



There is obviously no way to make kamailio have different timeouts for
different INVITE (T.38 vs the rest) types then?



*From:* Ivan Milivojevic [mailto:edesibe at gmail.com]
*Sent:* 17 January 2014 08:58 PM
*To:* Matthew Ogden
*Cc:* Spce-user
*Subject:* Re: [Spce-user] Spce timeout for T.38 Reinvites



HI Matthew,

You can check timeout on kamailio-proxy side...

# kamailio.cfg.tt2

modparam("tm", "fr_timer", 9000) ### based on doc ### Timer which hits if
no final reply for a request or ACK for a negative INVITE reply arrives (in
seconds).
modparam("tm", "fr_inv_timer", 180000)

Regards,

Ivan





On Fri, Jan 17, 2014 at 6:07 PM, Matthew Ogden <matthew at tenacit.net> wrote:

HI



What sets the timeout for a T38 reinvite on SPCE? My timeout is 4000ms for
Sems in config.yml, so clearly its not that, since this took exactly
9000ms.



What timer/timeout made my SIP server cancel the reinvite? The reason I
need a longer timeout is, the recipient company is answering the call, then
forwarding the through a few rings (extra time before the sync can actually
be caught for t.38).



in this wireshark call graph,

The left line is my subscriber,

The middle line is sipserver



Here is picture,



Below and attached are the text representation

Conv.| Time    | subscriber                          |
Peer                           |

     |         |                   | my server     |

2    |18:46:27.453879|         INVITE SDP (g711A)
|                   |SIP From: <sip:2XXXXXXXXX at subscriberip:5060
To:<sip:0XXXXXXXXX at spceIP:5060

     |         |(5060)   ------------------>  (5060)   |                   |

2    |18:46:27.454546|         100 Trying|
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

2    |18:46:27.456403|         407 Proxy Authentication Required
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

2    |18:46:27.510806|         ACK       |
|                   |SIP Request

     |         |(5060)   ------------------>  (5060)   |                   |

2    |18:46:27.514119|         INVITE SDP (g711A)            |
          |SIP From: <sip:2XXXXXXXXX at subscriberip:5060
To:<sip:0XXXXXXXXX at spceIP:5060

     |         |(5060)   ------------------>  (5060)   |                   |

2    |18:46:27.514636|         100 Trying|
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

-----------------------------------------------------------------------------

3    |18:46:27.522117|                   |         INVITE SDP
(g711A)            |SIP From:
<sip:2XXXXXXXXX at subscriberipTo:<sip:2XXXXXXXXXX at peerip

     |         |                   |(5060)   ------------------>  (5060)   |

3    |18:46:27.536103|                   |         100 Giving a
try              |SIP Status

     |         |                   |(5060)   <------------------  (5060)   |

3    |18:46:28.648929|                   |         200 OK SDP
(g711A)            |SIP Status

     |         |                   |(5060)   <------------------  (5060)   |

-----------------------------------------------------------------------------

2    |18:46:28.650490|         200 OK SDP (g711A)
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

2    |18:46:28.708976|         ACK       |
|                   |SIP Request

     |         |(5060)   ------------------>  (5060)   |                   |

-----------------------------------------------------------------------------

3    |18:46:28.710179|                   |         ACK
|                   |SIP Request

     |         |                   |(5060)   ------------------>  (5060)   |

-----------------------------------------------------------------------------

2    |18:46:28.712202|         INVITE SDP (t38)
|                   |SIP From: <sip:2XXXXXXXXX at subscriberip:5060
To:<sip:0 at spceIP:5060

     |         |(5060)   ------------------>  (5060)   |                   |

2    |18:46:28.712970|         100 Trying|
        |                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

-----------------------------------------------------------------------------

3    |18:46:28.713577|                   |         INVITE SDP
(t38)              |SIP From:
<sip:2XXXXXXXXX at subscriberipTo:<sip:2XXXXXXXXXX at peerip

     |         |                   |(5060)   ------------------>  (5060)   |

3    |18:46:28.717171|                   |         100 Giving a
try              |SIP Status

     |         |                   |(5060)   <------------------  (5060)   |

-----------------------------------------------------------------------------

2    |18:46:37.713078|         408 Request Timeout
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

2    |18:46:37.768451|         ACK       |
|                   |SIP Request

     |         |(5060)   ------------------>  (5060)   |                   |

2    |18:46:37.770487|         BYE       |
|                   |SIP Request

     |         |(5060)   ------------------>  (5060)   |                   |

2    |18:46:37.771110|         100 Trying|
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

2    |18:46:37.772098|         200 OK    |
|                   |SIP Status

     |         |(5060)   <------------------  (5060)   |                   |

-----------------------------------------------------------------------------

3    |18:46:37.772169|                   |         ACK
|                   |SIP Request

     |         |                   |(5060)   ------------------>  (5060)   |

3    |18:46:37.772244|                   |         BYE
|                   |SIP Request

     |         |                   |(5060)   ------------------>  (5060)   |

3    |18:46:37.776329|                   |         BYE
|                   |SIP Request

     |         |                   |(5060)   <------------------  (5060)   |

3    |18:46:37.776817|                   |         200 OK
|                   |SIP Status

     |         |                   |(5060)   ------------------>  (5060)   |

3    |18:46:37.778354|                   |         200 OK
|                   |SIP Status

     |         |                   |(5060)   <------------------  (5060)   |

3    |18:48:28.920672|                   |         408 Request
Timeout           |SIP Status

     |         |                   |(5060)   <------------------  (5060)   |

3    |18:48:28.921215|                   |         ACK
|                   |SIP Request

     |         |                   |(5060)   ------------------>  (5060)   |


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