Phone SystemsIntermediateAbout 15 min

Desk Phone Has No Dial Tone or Won't Register

A desk phone that won't connect is usually a network or power issue. These steps resolve most cases.

Step-by-step

1
Check the network cable
Make sure the Ethernet cable is firmly seated in the phone's LAN/Internet port and in the wall jack or switch. Try a different cable or port to rule them out.
2
Confirm power
If the screen is blank, the phone isn't getting power. Check the PoE switch or plug in the power adapter.
3
Verify your internet is up
Cloud phones need internet. Confirm other devices can browse the web; if the internet is down, fix that first (see our network guides).
4
Reboot the phone
Unplug the phone (and power) for 30 seconds, then reconnect and let it fully start and re-register.
5
Check the registration status
If the screen shows 'not registered,' 'no service,' or an error, the phone can't reach the phone system — usually a network or configuration issue.
6
Factory reset only if instructed
Don't factory reset unless we walk you through it — it erases the configuration and the phone will need to be re-provisioned.

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