Avaya 1151C2 - Manual (Page 21)

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Figure 7: Local Powering Option for 4620/4620SW/4621SW/4622SW/4625SW/5620SW IP Telephones
optional =
Network cable
supplied with IP telephone
Note: The 4622SW does not have a handset,
but instead can support a second headset.
Note: These telephone models may also be powered over the network cabling from a
central location using an IEEE Std 802.3af compliant switch or midspan power supply.
1151C1/C2
IP/DCP
PHONE LAN/PBX
Cat5
Cord