Windows
Desk phone shows a red X and will not place calls
The phone displayed a red X and was not working. A reset was performed by removing power, holding 1+3+5, then powering it back on; after that the phone showed the correct date/time and could place outbound calls.
Killed once by someone from XL.net, on 2026-04-08.
Affects
Hardware
- desk phone
What you see
- Red X shown on the phone
- Phone not working
- Unable to call out
When it shows up
A desk phone shows a red X and calls do not go out
You are in this case if:
- Red X on the phone display
- Outbound calls fail before reset
- Phone date/time is incorrect or out of sync before recovery
1 fix below
The steps that killed it
The steps are behind a quick check
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Someone from XL.net killed this on a Windows computer on 2026-04-08. It is written up from that one repair, so it cites no outside page.