Power over Ethernet on Cisco IP Phones Power Requirements

Power over Ethernet (PoE) is the ability to deliver 48 VDC of power over the same copper cable as Ethernet.

Different Cisco IP Phone types require varying power requirements to power the phones, the following lists those power requirements. CP-7902G (6.3W)

• CP-7905G (6.3W)
• CP-7910-SW (6.3W)
• CP-7910G (6.3W)
• CP-7912G (6.3W)
• CP-7940G (6.3W)
• CP-7960G (6.3W)
• CP-7906G (5W) (Class 2)
• CP-7911G (5W) (Class 2)
• CP-7941G (6.3W) (Class 2)
• CP-7941G-GE (12.9W) (Class 3)
• CP-7961G (6.3W) (Class 2)
• CP-7961G-GE (12.9W) (Class 3)
• CP-7970G (10.25W) (Class 3)
• CP-7971-G-GE (15.4W) (Class 3)
• CP-7985G (12.55W) (Class 0, Not full brightness)
• IEEE 802.3af Device - Class 0 (15.4W)
• IEEE 802.3af Device - Class 1 (4W)
• IEEE 802.3af Device - Class 2 (7W)
• IEEE 802.3af Device - Class 3 (15.4W)