SAGEM 3P@C
2.3.2.VDSL Unit Board (VDUB)
1.1.1.5Structure of the VDUB
VDUB is the VDSL office end access service board of 3P@C 4450E. Each VDUB provides 24 VDSL subscriber interfaces. The subscriber interface is connected to the DIN connector on the backplane, thus implementing data transmission via the existing data switching line (such as telephone line) and separation of data transmission from voice transmission.
The VDUB features high security and supports IEEE 802.1Q VLAN to provide secure isolation for each subscriber. In addition, it supports the port locking function to prevent illegal subscribers from accessing the network.
VDUB adopts the
When used in 3P@C 4450E, the VDUBs can be inserted in slots 2 ~ 15 of the 10U chassis, as shown in the following figure:
Figure
The front view of the VDUB is shown in the following figure:
Figure
VDUB running
state LED
Upper puller
adapter
Subscriber interface working state LED
Lower puller adapter
The front panel of VDUB provides two groups of LEDs, as follows:
VDUB running status indicators RUN and ALM, which are in the upper part of the
3P@C Installation Manual
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