BR4 - Appliance User Manual v2.0
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Keep in mind that if you want to use BR4-Appliance in NT mode
you will need an ISDN crossover cable as shown below (pins
enumeration according standard RJ45 male connector, see above):
You will need to use 100
Ω
external resistive termination (between
both TX+,TX- and RX+,RX-) at the NT end of the ISDN cable. For
example assume BR4-Appliance1 is set to NT mode, BR4-
Appliance2 is TE mode. We will terminate at BR4-Appliance1
side (refer to the picture above). You need to put a resistor between
pins 3-6 and another one between pins 4-5. BR4-Appliance doesn’t
provide phantom power on its ISDN ports. If you are connecting
ISDN telephone which requires power from the ISDN line you
have to implement this externally
•
Serial Port cable
You need serial patch cable for the console access to your PBX from a PC.
The schematic of the cable is:
The default console port credentials are username:
root,
password
uClinux
