Troubleshooting; Information; Troubleshooting Guide - Fortinet FON-670i User Manual

Troubleshooting

Information

Going to Settings > Status on the phone provides the means to quickly view the network
parameters (IP address, default gateway address, and subnet-mask), registration status of
phone, MAC address and firmware version. This information may be useful if calling Fortinet
Support.

Troubleshooting guide

Symptoms
Display is blank
Phone displays a gray network
icon in the task bar
Extension name is not
displayed in the task bar
No audio during a call
Troubleshooting
Corrective actions
Confirm the phone's power source.
1. Ensure your Ethernet cable is plugged into the INTERNET
port on the back of your phone.
2. Ensure the Power over Ethernet (PoE) switch is properly
configured. If it still doesn't work, replace the Ethernet
cable.
The DHCP server is not responding.
1. Ensure your DHCP server is online. This is typically your
router.
2. Reboot the router or DHCP server.
3. If you are still experiencing issues, the phone may require
advanced network configuration. Contact your
administrator.
Your phone is not registered.
1. On the Extension page of the FortiVoice interface, ensure
the MAC address is correctly entered and the Phone
Type is FON-670i or FON-675i (depending on your
model). Save your configuration and reboot the phone.
2. On the phone, ensure the TFTP IP address is correct. To
verify, see "For use as an external extension" on page 5
3. If your phone is configured as an external extension,
check the network connection and firewall settings at the
phone system location.
1. Check the handset/headset connections.
2. Make sure the phone is properly registered with the
phone system.
3. If your phone is configured as an external extension,
check the network connection and firewall settings at the
phone system location.
Page 26 FortiFone User Guide