[Asterisk-Users] ISDN connection problem (i4l, not asterisk)

[Steve Underwood]

Steve Brown wrote:

> Sorry for a slightly off-topic question, but I'm getting desperate.
>
> I tried to use asterisk to talk w/ ISDN line and tracked the problem 
> to i4l.
>
> I have a Diva PCI 2.02 (S/T) card and am running RH8 w/ 2.4.20 kernel 
> (first version that supports the 2.02 w/ hisax driver). The switch is 
> a 5ESS running NI-1 protocol. The card sync's up and reports other 
> traffic on the line, but fails to send anything. Calls just timeout, 
> not even attempt to negotiate a tei. The same card will at least make 
> (but not receive) calls using the Eicon Windows XP driver.
>
> de.alt.comm.isdn4linux is pretty lonely these days and the list at 
> isdn4linux.de is mostly spam. Maybe a post every few days, mostly 
> questions, including mine. I downloaded 700+ pages of specs from ETSI 
> which I really don't want to read.
>
> Is anybody still working on i4l?
> Is there a better way to contact the i4l guys?
> Is anybody on this list successfully using this config?
> Does anybody on this list speak q.921/q.931?

If I remember rightly, you can make i4l give a formatted dump of the 
ISDN messages it exchanges with the network. Produce one of those. Then 
someone fluent in Q.921/Q.931 might be able to help.

P.S. I suspect you may have some fluency, since you actually remembered 
to add the dots after the Q's :-)

Regards,
Steve