Expansion Module for 8861 phone will not power on

[Renee.Munoz1]

I have a brand new 8861 phone with the expansion module. When I connect the expansion module to the phone a message appears saying "The phone is unable to power this accessory". What am I missing?

Correct Phone Button Template is selected & BEKEM 36-button line expansion module is selected in Call Manager -

[Jitender Bhandari]

Hi Renee,

Are you using CISCO switch, if yes what model. Also do sh power inline <port>.

JB

[Renee.Munoz1]

Yes it is a Cisco switch & it is Power over Ethernet -

[Jitender Bhandari]

what is the switch model, can you provide out put of "sh power inline <port>"

JB

[Jitender Bhandari · Accepted solution]

Reason why i am asking is i want to know what PoE standard are you using as

8861 with KEM will only be supported with 802.3at POE.


Refer to this doc.

http://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/ip-phone-8800-series-key-expansion-module/datasheet-c78-732356.html

HTH

JB

[Jitender Bhandari]

Thanks Rob.

Regards

JB

[mw-pphillips]

Hello Jitender,

We're experiencing a similar problem.

Trying to deploy 8851 + 1x KEM.

Switch will power the phone and the phone will register each time, but it will not power the KEM.

According to your document, we should only need 802.3af.

Using a Juniper EX2300-24P which supports 802.3at.

Seeing a log entry where the phone negotiated Class 4 power (802.3at), yet console still does not boot.

Phone recognizes it's there, but says it's offline.

Any guidance would be appreciated.

Cheers

[Renee.Munoz1]

You led me down the right path just by your questions - Our Current PoE will not support this setup - I am all set thank you!

[Jitender Bhandari]

Happy to help

JB