help with ISDN line setup

[Hans Petter Selasky]

On Monday 09 July 2007 11:30, zytek-lists at nuxi.pl wrote:
> > Hi,
> >
> > Your setup is like this, right?
> >
> > [Telcom] <-> [NTBA] <-> [HFC-S PCI A card] <-> [I4B]
>
> Yes, exactly.
>
> > It might be that your ISDN cable needs a resistor.
>
> Resistor? Could you be more verbose?

Usually there is a switch on the NTBA where you can select 50,68 or 100 Ohms 
resistance.

>
> > Maybe you could try the following. Build the ISDN crossover cable that is
> > described in "man ihfc". Then execute the following command:
> >
> > isdnconfig -u 0 -p DRVR_DSS1_NT power_on
> >
> > Then connect your equipment like this:
> >
> > [Your ISDN phone] <-> [ISDN crossover cable] <-> [HFC-S PCI A card] <->
>
> [I4B]
>
>
> I have tried but the phone does NOT power on. I have double checked the
> cable I have made, it's OK (checked with cable tester). Card was in
> power_save: off. The telephone was dead.

Your ISDN phone is probably powered over the ISDN cable.

Do you know if your NTBA has ISDN on the up-link towards the telecom ?

>
> There is one jumper on the card, I will power off computer and see
> what it is responsible for. Lost the card's manual. :)

--HPS