3Com 3C10111C - NBX 100 - Modular Exp Base Installation Manual page 26

26 C 1: I
HAPTER NTRODUCTION
An NBX 100 system can have one or more chassis. The number depends
on how many external telephone lines the system must support and the
equipment that you choose for attaching telephones. Additional chassis
must not contain an NBX Call Processor card.
Figure 3 NBX 100 Chassis with Call Processor and Cards
MOH PAGING
V
S S S
O
1 2 3
L
3C10110D 3Com NBX Call Processor
PWR 1 2 3 4 5 6 7 8
3C10370 3Com NBX Uplink Card
T1
3C10116C 3Com NBX Digital Line Card
1 2 3 4
PFT 1
3C10114C 3Com NBX Analog Line Card
1 2 3 4
PFT 1
3C10114C 3Com NBX Analog Line Card
1 2 3 4
PFT
1
3C10114C 3Com NBX Analog Line Card
Up to six cards slide into the front of the chassis. An internal backplane
connects the cards to each other.
The top slot has no access to the backplane. Always cover the top slot
with a blank faceplate.
The Network Call Processor, interface cards, and devices are described
later in this chapter.
For installation instructions, see
EXT. ALERT 10BT UPLINK COM 1
MDI-X
1
10BT UPLINK
CF
RA
Nominal
MDI-X
LB
2 3
2 3
2 3
Chapter 2.
NBX 100
COM 2
8
CONSOLE
115 volts
230 volts
4
4
4