I've got a SPA514G on firmware 7.5.5 with a SPA-500DS sidecar on firmware 3.0.16. The sidecar lists all the office extensions. I recently set up 3 extra extensions for the receptionist on the line keys on the phone. When I finish configuring it, the phone reboots to apply the changes. When it comes back, all the lights on the side are blinking orange. If I press one, it rings through to the extension without a problem.
It does this on only this phone with 4 extensions on the line keys. I have two others with sidecars that have one extra extension and they do not blink.
Why are they blinking orange?