Chapter 2. Installation and Operation
2-4 T3SU 300 User Manual 61200217L1-1
Figure 2-1. T3SU 300 Rear View
DTE Port Interface Card Slots
The T3SU 300 rear panel has three card slots for the installation of
optional interface cards. To insert cards, perform the following
procedure:
1. Remove blank slot cover from the rear of the T3SU 300.
2. Slide the card into the corresponding rear slot until the card
panel is flush with the T3SU 300 chassis.
3. Push in thumbscrews and turn clockwise to secure the card and
ensure proper connection to the main board of the T3SU 300.
Alarm Connector
The alarm connector is a three-position, screw-type terminal block
that is connected to the three contacts of a Form C-type relay on the
main board of the T3SU 300. This relay is activated any time the
T3SU 300 detects an alarm condition on the T3 network interface.
DTE PORT 4
D
J
N
T
X
BB
FF
LL
B
F
L
R
V
Z
DD
JJ
NN
C
H
M
S
W
AA
EE
KK
A
E
K
P
U
Y
CC
HH
MM
V.35 INTERFACE
DTE PORT 3
HSSI INTERFACE
DTE PORT 2 DTE PORT 1
NCCOM NO
AUX
LAN
ALARM
RX IN TX OUT
DS3 INTERFACE
Item Function
On/Off Switch
115 VAC Connection
DTE Ports 2-4
Alarm
DTE Port 1
Aux
LAN
DS3 Interface
On/off control
Power connection
Interface option card slots
NC/NO relay contacts
Integral HSSI interface
Function depends on product
version (see page 2-5)
10baseT LAN connection
T3 service connection
