Avaya 03-300686 manual Connecting cables to telephones and other end devices

Installing and wiring telephone power supplies

Figure 57: Connecting telephones and other end devices to the 1152B PDU

Ethernet

Switch/Hub

1152A1 Power Distribution Unit

RJ-45 IN RJ-45 OUT

End Device

	1
	2
45-RJ	3
	4
	5
	6
	7
	8

data

data

data

spare

spare

data

spare

spare

1

2

3

4

5

6

7

8

Data In

Data & Power Out

1

2

3

4

5

6

7

8

data

data

data

DC +

DC +

data

DC -

DC -

1
2
3	45-RJ
4
5
6
7
8

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

An 1152B PDU contains line-sensing capabilities that enables 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 1152B PDU.

To safeguard devices that are not enabled, the 1152B PDU detects devices that are not enabled so does not send power. Note that data continues to flow using 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 58: Connecting an IP telephone with an external splitter on page 127).

126 Installing and Connecting the MDF and Telephones