CP 8811 will not register

[Jacobb_S]

I purchased a few 8811's and when I plug them into the network the activation code screen comes up. 

Will not accept multiple different activation codes, nor will it register via MAC.

Get's ip address as expected, (same as the other 120 phones I have in my environment)

Connection refused when trying to access via http.

Solution is cloud based, admin.webex.com

TIA

[Matt_W · Accepted solution]

Please make certain the phones you are using are the MPP version of the phone.  CP-8811-3PCC-K9=
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-8800-series/ip-phone-8800-multiplatform-firmware-ds.html

If you are running Webex Calling and purchased the wrong version of the phone, you can convert the firmware using your Control Hub. https://help.webex.com/en-us/article/n19c71/Migrate-Your-Phone-to-Webex-Calling

[Jacobb_S]

Thank you!