Cisco 9971 IP phone sidecar is loosing registration.

[rafaeleprieto1]

Cisco 9971 IP phone sidecar is loosing registration. If I reset the phone the sidecar will work for about a day then it will loose registration again.

[Andrew West]

In your pub do the phones where the expansion module is losing connection does the registration status say Partial Registration? 

It sounds silly but check physical connectivity between the devices along with POE draw on the port.

[rafaeleprieto1]

Thanks for your response Andrew. The phone associated with the expansion module does not show partial registration. I will verify POE draw, I was planning on installing a POE brick to see is it solves the issue.