A
Appearance and Ports
The RTN PI-DC B20 is a full-outdoor PI with high power. It uses DC power input and transmits GE electrical signals and -48 V power signals to the full-outdoor RTN 300 equipment through an
outdoor network cable.
Product Overview
C
Indicator Status Description
Indicator
Status
Meaning
POWER
Steady green
Power is being supplied.
Off
No power is supplied.
DC OUT
Steady green
The PI uses DC power output,
and the output is normal.
Off
The DC output port does not
output any power.
P&E OUT
Steady green
The PI uses P&E output, and the
output is normal.
Blinks green
In PSE-PD mode, the PI is in the
handshake state.
Off
The P&E port does not output any
power.
B
Port Description
The pin assignments for Ethernet service signals in the ports GE1 and GE2 are consistent with those in
the ports P&E1 and P&E2. These ports all support the MDI, MDI-X, and auto-MDI/MDI-X modes.
The P&E1 OUT and P&E2 OUT indicators inside a PI indicate the output status of the corresponding
ports. Their meanings are the same as the meaning of the P&E OUT indicator on the side of the PI.
Pin
Description
1
BGND
2
BGND
3
-48 V power signal
4
BGND
5
BGND
6
-48 V power signal
7
-48 V power signal
8
-48 V power signal
Whether the P&E ports use MDI or MDI-X mode to transmit Ethernet service signals does not affect the
pin assignments for power signals.
Pin assignments for power signals in the P&E ports
Maintenance
compartment
opened
Power cable
stripping indicator
Port
area
P&E port
indicators
DIP switches for
setting the power
output mode
DIP switches for
setting the number
of P&E outputs
DC input port
DIP switches for
setting the P&E
mode
P&E ports
GE ports
02
DC output port
Side view
PGND ground point
