NEC SL2100 - 3.3 Screen Layout and Key Functions

Connect the Exchange Lines
Quick Install Guide – SL2100 with ISDN PRI Trunks rev 1.1 19
7- Connect the Exchange Lines
The SL2100 chassis does not have any trunk ports pre-installed, you install the trunk card of your choice.
ISDN PRI circuit
Trunk port allocation
Circuit 1
Trunk ports 1-30
PRI1
Pin
No.
PRI T-bus
connection
RJ45 Colour code
8
-
7
-
6
-
5
TB1
White/blue
4
TA1
Blue/white
3
-
2
RB1
White/Orange
1
RA1
Orange/white
Note – The circuit of the 1PRIDB card can be set as ISDN S-Bus (Station Interface), this mode is not covered
within this guide, refer to the SL2100 Hardware Manual for details.
87654321
The SL2100 1PRIDB card has
an RJ45 connector.
Use a standard (straight
through) RJ45 Patch cable to
connect to the exchange lines.
RJ45