Installing and wiring telephone power supplies
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
239
December 2003
Use a standard CAT5, CAT6 or CAT6e straight-through Ethernet cable (not supplied), including all eight
wires (4 pairs) as shown in
Figure 95, Connecting telephones and other end devices to the 1152A1 PDU,
on page 239.
Figure 95: Connecting telephones and other end devices to the 1152A1 PDU
For Data-In ports connect the Ethernet cable leading from the Ethernet Switch/Hub to the Data port. For
Data & Power Out ports, connect the Ethernet cable leading to the telephone or other end device to the
corresponding Data & Power port.
NOTE:
Be certain to connect correspondingly numbered Data and Data & Power ports.
Connecting cables to telephones and other end devices
The 1152A1 PDU contains line-sensing capabilities that enable it to send power only to end devices
designed to receive power from the LAN. These end devices, termed Power over LAN Enabled, receive
power once they are connected to the 1152A1 PDU.
To safeguard devices that are not enabled, the 1152A1 PDU detects devices that are not enabled so does
not send power. Note that data continues to flow via the Ethernet cable regardless of the status of the end
device.
End devices that are not enabled to receive power directly may receive power and data through an
external splitter. The external splitter separates the power and data prior to connection to the end device
(see
Figure 96, Connecting an IP telephone with an external splitter,
on page 240).
End Device
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
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8
1
2
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8
RJ-45 IN
RJ-45 OUT
Ethernet
Switch/Hub
RJ
-4
5
RJ
-4
5
data
data
data
DC +
data
DC -
data
data
data
data
spare
spare
spare
spare
Da
ta
In
Da
ta
&
P
ow
e
r O
u
t
DC +
DC -
1152A1 Power Distribution Unit
