Procedure 75 Preventing Ground Loops - Avaya Nortel Communication Server 1000 Manual

534 Appendix B I/O, maintenance, and extender cable description
I/O Panel: P1
P1-45
P1-46
P1-47
P1-25
P1-50
P1-18
P1-19
P1-43
P1-44
P1-23
P1-24
P1-48
P1-49
P1-25
P1-50
Prevent ground loops on connection to external customer LAN
equipment
The shielded RJ-45 coupler is the connection point for the customer
shielded CAT5 LAN cable to the hub, switch, or router supporting the
TLAN and ELAN subnets. Use shielded CAT5 RJ-45 cable to connect
to the customer TLAN/ELAN equipment. Follow the steps in
75 "Preventing ground loops" (page 534)
connecting to external customer LAN equipment.
Follow the steps in
prevent ground loops.
Procedure 75
Preventing ground loops
Step
1
2
Copyright © 2003–2008, Nortel Networks
.
Signal Name
BSINB-
BDCDB-
BDSRB-
SHLD GRND
SHLD GRND
RXDB+
TXDB+
RXDB-
TXDB-
RX+
TX+
RX-
TX-
SHLD GRND
SHLD GRND
Procedure 75 "Preventing ground loops" (page 534)
Action
Connect the customer-provided shielded CAT5 LAN cable to the
external LAN equipment. Ensure that the external LAN equipment
is powered-up.
Use an ohmmeter to measure resistance to ground between the free
end of the shielded RJ-45 cable and the building ground.
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
P2, P3,P4
P2-3
P2-1
P2-6
P4-3
P4-1
P4-6
P4-2
P3-3
P3-1
P3-6
P3-2
to prevent ground loops when
Color
BLUE
ORANGE
YELLOW
GREEN/WHITE
ORANGE/WHITE
WHITE/GREEN
WHITE/ORANGE
GREEN/WHITE
ORANGE/WHITE
WHITE/GREEN
WHITE/ORANGE
BARE
BARE
Procedure
to