I tried the same, and my Telco company told me
(although sometimes it's hard to trust them,
you never know what kind of guy from the call center is answering
your call) that p2p lines already have l1 permanent.
Nonetheless it goes down sometimes for quite long periods.

I'm starting wondering whether it's some sort of kernel
related problem (i.e. irq sharing settings etc.) by which
the card loses packets.

Henrik Woffinden ha scritto:
I have the exact same problem on a normal ISDN2 BRI line.
I solved it by having my Telco put layer 1 to permanent.

Best regards,

Henrik Woffinden

Alberto Pastore wrote:
asterisk ha scritto:
On most traditional pabx's it's possible to set layer 1 to permanent or
call. It sounds like your system is configured for permanent and your
lines
to call. How you would set this on asterisk I have no idea.

fadge

The question is: is it possible I am the only one with such
problems on all asterisk boxes on different sites and
different ISDN lines? I've googled around on many forums
but no one seems to have this one.

The old replaced PBXs had layer 1 set for call, as you say,
and they showed no problems at all.

With asterisk as a PBX, every 2-3 hours, you cannot dial out
for 5 to 15 minutes then everything gets back to normal
(no idea about what triggers the return to working state).

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