[Asterisk-Users] some EICON Diva 4BRI questions

[Klaus Darilion]

On Fri, April 21, 2006 15:19, Armin Schindler said:
> Hi Klaus,
>
>> Thanks for the detailed answers and isdn for Linux basics.  I will take
>> the opportunity to ask some more questions :-)
>>
>> On Fri, April 21, 2006 12:24, Armin Schindler said:
>> > On Fri, 21 Apr 2006, Klaus Darilion wrote:
>> >> 3. Is the PIN layout for TE or NT mode?
>> >
>> > It is TE PIN layout, you need a crossed cable with 100Ohm termination
>> for
>> > NT-mode.
>>
>> Why do I need a cable with 100Ohm termination? Shouldn't be the
>> termination inside the DIVA Server? Until now (with quadbri and other
>> isdn
>> card) I only used CAT5 cables with BRI-crossover PIN layout. No
>> resistors.
>> Can you please explain this a little bit more or give me links to the
>> wiring basics?
>
> I must admit that I don't really know that. Maybe the quadbri has this
> termination automatically on board. Since the Eicon DIVA Server card has
> basically a TE port, the termination is necessary.
> I always use the 100Ohm termination in my NT-cross-cables.
>
> Here is a short description on Melware Wiki:
>   http://www.melware.org/BriCrossCable

Hi Armin!

I guess the RJ-45 jack with the resistor must be connected to the DIVA
card, right?

But I'm still confused. Usually, if a line needs termination, the
termination is needed on both ends. Thus, if there is no line termination
inside the DIVA card, we would termination in TE mode too.

regards
klaus