[Asterisk-Users] ISDN PBX integration

[Shahar Livne]

Hello list,

I am trying to connect an old ISDN PBX to my asterisk system.
The setup includes an asterisk (1.0.9) running on the Soekris
hardware, with an ISDN card (Billion BIPAC PCI), and I run
zaphfc-bristuff-0.2.0-RC8k kernel module in NT mode (modes=1).

When I connect an ISDN phone to the card (using cross ISDN cable + 40v
power supply), I manage to make calls from and to the asterisk.

When I try to connect the ISDN PBX instead, still using the same cross
ISDN cable and the power supply, I get rings to the right extensions
of the ISDN PBX, but no call setup happens, and after 2 rings comes
silence.

I have tried this with NT and TE modes of the zaphfc kernel module (I
thought it has to do with point-to-point or point-to-multipoint
issue). I have tried it both with cross ISDN cable and normal ISDN
cable (I just used Ethernet cable), all without any success (not even
the mentioned rings).

When this ISDN PBX is connected to normal ISDN line, it just works.

If there is anyone with some knowledge about ISDN equipment and its
integration with asterisk – I will be happy to get some advice – what
to check or how is it actually supposed to work.

Thanks,
Shahar

-- 
Shahar Livne
LivneX - Open Source Development and Services
http://LivneX.com