NEC Aspila EX Hardware Manual page 78

CÔNG TY VIỄN THÔNG VIỆT PRO
Section 2: PCB Installation and Startup
To install a BRI Interface PCB:
1.
2.
3.
4.
5.
6.
7.
The 8BRIU PCB is shown here.
2-36 Section 2: PCB Installation and Startup
Chuyên phân phối tổng đài NEC
Set the run/block switch to block, DOWN.
Set the SWn02 jumpers on the BRI PCB for either T-Bus or S-Bus.
Set the SWn00 jumpers as either terminated or unterminated.
Set the CNn02 jumpers to either provide power (with S-Bus) or not to supply power (with T-
Bus).
Plug the BRI PCB into the system cabinet.
Note that the white PCB Pull Tab should always be positioned closest to the top of the
cabinet.
Set the run/block switch to run, UP. Before proceeding to Step 7, wait to verify that the STA-
TUS LED starts to flash.
With normal operation, the status LED will flash fast. If trouble was found during the self
diagnostics routine, the status LED will flash slow.
Once connected, the ISDN Layer Link Status LEDs will be on steady when the Layer 1 link
is established. If there is no link, the LED will be off.
Connect the cable from the NT1 Network Termination cable to the CN5, CN6, CN7, or CN8
connector on the BRI PCB.
Figure 2-15: BRI PCB INSTALLATION
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