Chapter 2. Installation and Operation
61200290L1-1 MX2800 User Manual 2-7
Figure 2-3. MX2800 Rear View
LAN Port
The LAN port is an 8-pin modular connector that provides a
10BaseT ethernet LAN interface. This
LAN interface is used for
SNMP and Telnet control.
L
A
N
1
2
3
4
5
M
O
D
E
M
CRITICAL
NO COM NC
NONCRITICAL
EXT CLK
DSX-3
IN
OUT
A
B
DSX-1/E1
(OUT)
DSX-1/E1
(IN)
USE COPPER
CONDUCTORS ONLY!
PWR
FAIL
RET
RET
PWR
FAIL
AB
DC POWER
115VAC 50/60HZ
0.8a
6
7
8
9
# Item Function
1 LAN 10BaseT LAN connection
Note: The LED to the right of this connector illuminates
when the unit is connected to an active ethernet seg-
ment.
2 Modem Telephone line connection for internal V.34 modem
(see note on page 2-8)
3 Noncritical/Critical Connections for external audible/visible alarms
4 Ext Clk Connection for a 44.736 MHz, 20 ppm, 1 Vpp sinusoid
to externally time the DS3 interfaces
5 DSX-3 T3 service connections for controller cards A and B
6 DSX-1/E1 64-pin Amp connectors for T1/E1s
7 Power DC power connection
8
Ground stud
9 115 VAC 50/60Hz AC power connection
Connect the LAN port to intra-building wiring only.
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