On Sat, 22 Apr 2006, Klaus Darilion wrote: > 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?
As far as I know that doesn't matter. I have my resistors just in the middle of the cross-wired cable. > 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. Sorry, I don't know why this is different to 'normal' ISDN line. Maybe the difference is about the distance. A normal ISDN line may be more than a few meters, but in NT-mode I have my PBX/Equipment connected to the card with a one meter cross-cable. I will try to find out more about this. Armin _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
