5-4
Cisco MGX 8260 Hardware Installation Guide
78-10966-02
Chapter 5 Connecting the Cables
Connecting DS3 Coaxial Cables
Figure 5-2
Connecting Nonredundant DS3 Cables
To connect DS3 cables to redundant BSCs, follow these steps.
Note
Label each cable with identifying information suitable for tracking in the MGX 8260 configuration
database.
Step 1
Using a DS3 Y-Adapter cable, connect one of the cable’s SMB plugs to a TX connector on the DS3 back
card. (See
Figure 5-3
.)
Step 2
Connect the other SMB plug to the corresponding numbered TX connector on an adjacent DS3 back
card.
Step 3
Connect the adapter cable’s BNC connector to a TX DS3 line in your facility.
Step 4
Using another DS3 Y-Adapter cable, connect an SMB plug to the RX connector on the DS3 back card
associated with the TX connector in
Step 1
.
Step 5
Connect the other SMB plug to the corresponding numbered RX connector on the adjacent DS3 back
card associated with the TX connector in
Step 2
.
Step 6
Connect the adapter cable’s BNC connector to the RX DS3 line in your facility associated with the TX
DS3 line in
Step 3
.
Step 7
Repeat
Step 1
through
Step 6
for all DS3 trunks on redundant BSCs.
BITS
CONSOLE
A
U
X
ALARM
MGMT
1
2
3
4
12
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
BITS
CONSOLE
A
U
X
ALARM
MGMT
1
2
3
4
12
RX
TX
6
RX
TX
1
RX
TX
2
RX
TX
3
RX
TX
4
RX
TX
5
Non-redundant BSC
TX cable
RX cable
59115