Quote:> I`m not familiar with this newsgroup but have a general question which I`m
> hoping someone out there can answer. I`m looking at buying an isdn
> for use in a home networking lab for use with routers. Most isdn
> are quite expensive but I have the opportunity to purchase a cheap Hybrex
> pbx. My knowledge of pbx`s is nil. This pbx has 3 ISDN lines and I need to
> know if I can connect these "back to back" and connect up two routers for
> transferring data
If the PBX can run all or at least 2 of the ISDN lines as "internal ISDN
lines" it is posible. That means that the PBX can provide the clocking and
run the lines in NT (not TE) mode. If the lines are not S (S0), but U
interface, might be there is something speecial to watch for about
modulation/demodulation, signal coding, but(!) I dont realy know, I am not
familiar with U interfaces. and the differnet (there are differnt) coding
methods. Have a look at the data sheet or ask the vendor for thsi features.
In addition you need crossover cables (x-over send and receive wires) if not
a crossover / interal plug is allready provided by the PBX.