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List:       semsdev
Subject:    [Semsdev]  491 Request Pending
From:       Juha Heinanen <jh () tutpro ! com>
Date:       2012-02-29 4:17:17
Message-ID: 20301.42701.761792.127489 () sip ! test ! fi
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Juha Heinanen writes:

> any idea why 491 and bye are sent and why ua - sems sbc leg is not
> terminated?

i still don't know answer to the above, but i got a bit further by
aligning minimum session timers in sems sbc and sems echo applications.
now i have in sems sbc:

session_expires=120
minimum_timer=90

and in sems echo server:

session_expires=240
minimum_timer=90

with this config 491 does not occur, but both sems sbc and sems echo
server send session timer re-invites to each other although session
timer negotiation resulted in uas (= sems echo server) doing the
refreshes (packet 19).

when sems sbc then sends re-invite to sems echo server, sems echo server
replies with '421 extension required' perhaps because sems sbc is not
supposed to do the refresh?

pcap file is enclosed.

-- juha


["421.pcap" (application/octet-stream)]

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