2-6 61200290L1-1G
Section 2, Installation and Operation MX2800 M13 Multiplexer User Manual
6. REAR PANEL

The MX2800 rear panel is equipped as follows:

• Ethernet local area network (LAN) port

•Modem port

• Two alarm output terminal blocks

• Two sets of DS-3 in/out jacks

• Two amphenol connectors

• DC/AC power connection

• Groun d stud

• Three-pro ng AC connection

• Wire-wrap pins for external connection of BITS clock (STS-1)

Descriptions for the items shown in Figure2-3 are explaine d in Tabl e 2-2. Pin assignments are given in

the tables in Appendix B, Pinouts.

Figure 2-3. MX2800 Rear View

Table 2-2. MX2800 Review View Identifiers

#Item Function

1 Ethernet LAN 10Base-T Ethernet connection

2 Modem Telephone line connection for internal V.34

3 Noncritical/Critical Connections for external audible/visual alarms

4 DS3/STS-1 T3 service connection for controller cards A and B

5 DSX-1/E1 64-pin female amphenol connectors for T1/E1s

6 Power DC power connection

7 Ground stud

8 115 VAC 50/60 Hz AC power connection

9 BITS Clock Wire-wrap pins for external connection of BITS clocks

DC POWER
115 AC 50/60Hz
0.8A
PWR
FAIL +
TRSTR
CLK
ACLK
B
S
–
L
A
NNONCRITICAL
DSX-1/E1
(OUT)
DSX-1/E1
(IN)
NO COM NC
CRITICAL
M
O
D
E
M
OUT IN
A
B
A
-48V 0.7A
B
DS3/STS-1
PWR
FAIL +
–
+24V 1.5A
1
2
3
456
7
8
9
USE COPPER
CONDUCTORS ONLY!