[asterisk-users] Two card NT-TE mode

[Klaus Darilion]

Tzafrir Cohen wrote:
> On Wed, Aug 09, 2006 at 12:05:30PM +0200, support_list wrote:
>> I want to connect two ISDN bri card directly.
>> Is it necessary to use a cross-cable?
> 
> No. A standard (non-crossed) ethernet cable will work, as long as it has
> all 8 wires.


I disagree. If the pin layout of the ISDN cards is in TE mode on both 
cards, then you do need a crossover cable. Usually the cards are in TE 
pin layout, except some cards have onboard jumpers for changing the 
pin-layout to NT mode (like junghanns quadbri).

I guess in your case you need a BRI crossover cable.

attached is a picture of an ISDN BRI crossover cable (from Diva Server 
Adapters Installation Guide)

regards
klaus
-------------- next part --------------
A non-text attachment was scrubbed...
Name: isdn-bri-crossover.gif
Type: image/gif
Size: 23450 bytes
Desc: not available
Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20060809/113c5579/isdn-bri-crossover.gif