Please check this troubleshooting procedure before requesting a repair. If the problem doesn’t get resolved, please
contact us.
General Failure Plug and Unplug from the power source. (Do
this for few times). Wait for at least one minute
before plugging the device.
If the problem is not resolved after doing this,
please contact our customer support service.
Indicate your number and broadband products.
Indicate your number and broadband products.
No ringer sound Ethernet cable is disconnected.
AC adapter is disconnected.
Did you change the volume
Please check the connection of the Ethernet
cable.
Please check the connection of the AC adapter.
Please adjust the volume on the button.
Did you change the settings on
the display?
Revert the change settings. Disconnect the
Ethernet cable (reboot).
Call is interrupted
by noise
Are there any abnormalities in
the network environment?
Please check your network environment.
Confirm that there is no mistake in the
Network issue
Firewall issue
Confirm that there is no mistake in the
registered MAC address, provisioning server.
etc.
Please check your network environment (UPnP
of the router, SIP-NAT, etc.).
Add corresponding rule for our
provisioning/login server when filtering is
provisioning/login server when filtering is
performed by your routers and/or firewalls.
If the problem is not resolved after doing this,
please contact our customer support service.
Indicate your unique number, MAC address
and model of device.
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