ADTRAN MX2800 - Power Supply and Source Recovery Mode; Figure 8-3. Power Supply and Source Failure Recovery Mode

Chapter 8. Power Loss Recovery
8-4 MX2800 User Manual 61200290L1-1
POWER SUPPLY AND SOURCE RECOVERY MODE
In this mode, two power supply cards are installed and are
connected to two individual power sources. In this mode, the
MX2800 handles any combination of power source or power
supply failure.
Much like the backup design for the controller cards, the MX2800 is
able to internally re-route the power source if a power supply card
and the opposite power source fail. For example, in the illustration
given in Figure 8-3, failed
P
OWER
S
OURCE
A
is connected to healthy
C
ARD
A
; and healthy
P
OWER
S
OURCE
B
is connected to failed
C
ARD
B
. In a case like this, the MX2800 automatically connects
P
OWER
S
OURCE
B
to
C
ARD
A.
Figure 8-3. Power Supply and Source Failure Recovery Mode
This configuration is only available with DC power supplies.