30 Jun
2015
30 Jun
'15
10:35 a.m.
On Monday 29 June 2015 17:29:17 Daniel-Constantin Mierla wrote:
the BYE must have a different To-tag than the other
answered branch and
the caller device should not close the connected call/branch.
Look at the To-tags in the two branches and see if they are different.
Thanks for the pointer.
Yes the BYE has indeed a different to tag than the answered leg. The caller is
an Asterisk 1.4. With a near default sip configuration as fas as I can see so
effectively pedantic=no, this this explains the behavior:
http://lists.digium.com/pipermail/asterisk-dev/2009-April/037810.html
"For instance, RFC 3261 plainly spells out that the way to identify whether an
incoming message belongs to a specific dialog is to check the call-id, to tag,
and from tag. With pedantic mode disabled, all we look at is the call-id
because
in the majority of situations, the call-id is suitable for identifying which
dialog the request belongs to. However, if you know that tag checking is
important, then it will be enabled by turning on pedantic mode."
This is a custom machine, I'm a bit hesitant to flip the pedantic switch. I'll
report a bug to the maintainer of that setup :)