Chapter 4: Cable Installation and Grounding
Management Connection for 1+1 HSB
Configurations
phn-3972 004v000
Page 4-33
Management Connection for 1+1 HSB
Configurations
In HSB protection configurations, two Y-splitter cables and a special signaling cable must be used
to connect the management ports (MGT/PROT) of the two PTP 820S units and provide
management access to each unit.
The Protection signaling cables are available pre-assembled from Cambium in various lengths, but
users can also prepare them in the field.
The following sections explain how to prepare and connect these cables.
Preparing a Protection Signaling Cable
The Protection signaling cables require the following pinouts.
Figure 11 Protection Signaling Cable Pinouts
CAT5E cable
2
4
6
8
RJ-45 connector
(male)
Port1: TX+
Port1: TX-
Port1: RX+
Port1: RX-
Port2: TX+
Port2: TX-
Port2: RX+
Port2: RX-
1
3
5
7
2
4
6
8
RJ-45 connector
(male)
Port1: TX+
Port1: TX-
Port1: RX+
Port1: RX-
Port2: TX+
Port2: TX-
Port2: RX+
Port2: RX-
1
3
5
7
4
ó
7
5
ó
8
Bl
W/O
G
W/G
Br
W/Br
O
W/Bl
Bl
O/W
G
G/W
Br
Br/W
O
Bl/W
Color Abbreviations
W
– White
G
– Green
O
– Orange
Bl
– Blue
Br - Brown
Note
Other than the pinout connection described above, the cable should be prepared
according to the cable preparation procedure described in
4-27.
