I have a few SPA504G's with 1 SPA500S sidecar attached. None of the buttons work or light up. I'm not sure it even has power. I don't see any settings on the phone to configure the side car and nothing in the web interface of the phone.
http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps10499/data_sheet_c78-548281.html
Indicates that power is provided by the SPA504G.
Any ideas where to start looking?
ephone 14
device-security-mode none
video
mac-address 30E4.DB81.2222
ephone-template 16
max-calls-per-button 2
paging-dn 34
mtp
type 504G
button 1:14 6m11 7m12 8m13
button 9m15 10m19 11m20 12m21
button 13m22
