Cisco 8831 not booting

[callanml31]

hey everyone, i’ve got an 8831 that when i plug into poe turns the green leds on for 3 seconds and they go off, the screen or any other leds don’t do anything. any ideas?

[liviu.gheorghe]

Hello @callanml31 ,

are you sure you are supplying the correct power? The Cisco Unified IP Conference Phone 8831 is an interoperable IEEE 802.3af PoE (Class 3 device) - 15.4W; 48 VDC is required.

Have you tried powering it using an optional AC-to-DC power supply (CP-PWR-CUBE-3=)?

Another thing you should consider - use of a power supply (CP-PWR-CUBE-3=) is required when using the Cisco Unified IP Conference Phone 8831 in a daisy-chain configuration.

[liviu.gheorghe]

Take a look at this post. It seems that they are having the same issue:

https://community.cisco.com/t5/ip-telephony-and-phones/8831-not-booting/m-p/5006729#M413780