Have your tried the nat_traversal module available in OpenSIPS? There
is documentation with it that explains how to solve these situations.
Adrian
On Apr 9, 2009, at 3:04 PM, Uwe Kastens wrote:
Adrian,
To be more specific:
- the router is not blocking sip - no sip-alg
- the timeout for the nat seems to be lower than the timeout for the
registration.
So the router will simply cut the connection for the reverse nat. So
the
invites to the UA behind the router are "running" on a closed port.
I would like to have a solution to solve this for the most UA -
without
any configuration issue on the UA or the router.
BR
uwe
Uwe,
It really depends on how strange is strange. Is this about routers
that
seem to block incoming SIP traffic? There is a topic about this on
http://voip-info.org search for SIP ALG.
If is about something else maybe you can define strange and other
people
might help.
Adrian
On Apr 9, 2009, at 2:43 PM, Uwe Kastens wrote:
Hello,
I am searching for a solution for some SIP Clients which are
behind some
strange router. What is the best way to handle this? Send keepalive
messages from the router to the UA or force the UA to send keepalive
packages.
I think a can handle this by modparam("nathelper", "sipping_method",
"INFO")?
BR
Uwe
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