2N PRI Gateways - User Manual User Manual
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3.3.2. Configuration Jumpers
There are four configuration jumpers on the PRI board. Jumper JP1 is intended for a
change of the board addressing and is not used at present. Jumpers JP2, JP3 is used for
hardware switching of the PRI ISDN connector into the TE or NT configuration. This operation
means only swapping of the transmitting and receiving connector pairs, the interface
configuration must be made by software. With jumper JP4 you can activate/deactivate back-up
connection between PRI1 and PRI2 in case that system is switched off or PRI board isn’t
handled by system . By default, jumpers JP1 is disconnected, jumper JP2 is connected as TE,
jumper JP3 is connected as NT and JP4 is connected.
Default. Please
don’t change
Default. Please
don’t change
RJ45 connector for
PRI-ISDN network
TE
NT
PRI 2 PRI 1
Active
Disable
JP4