Hello beavisthrare1,
I am having the same problem with the same setup and a Cisco SPA508G.
the next incoming call is not displayed on the phone and they can hear the call-waiting beep on the handset.
I am having "Error: spcp register token rejected 514G"
I am trying to provision 3 spa514G phones to Cisco UC540 with CME. However I am unable to have them registered.
I have a spa508G that works fine, as there seems to be loads for spa50X versions,...