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Wireless-G IP Phone
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Appendix A: Troubleshooting
Common Problems and Solutions
• There may not be enough bandwidth available for your Internet phone call. You may want to test your
bandwidth using one of the bandwidth tests available online. If necessary, access your service account
at your Internet phone service provider’s website, and reduce the bandwidth requirements for your
service. For more information, refer to your Internet phone service provider’s website.
4. The IP Phone does not ring, and my calls automatically go to voicemail.
Go through this checklist until your problem is solved:
• Check the ringer volume on the IP Phone, and make sure it is set to an audible level.
• Follow these instructions to reboot your cable or DSL modem, IP Phone, and router:
1. Power off your cable or DSL modem by unplugging its power adapter.
2. Power off the router by unplugging its power adapter.
3. Power off the IP Phone by pressing and holding down the Power On/Off button for two seconds.
4. Wait two minutes, and then power on your cable or DSL modem by plugging its power adapter into
an electrical outlet.
5. Wait two minutes, and then power on the router by plugging its power adapter into an electrical
outlet.
6. Wait five minutes. Power on the IP Phone by pressing and holding down the Power On/Off button for
two seconds.
7. Reboot one of your networked computers, and check for an active Internet connection.
• Set up port forwarding on your router. You must specify that four port ranges be forwarded to the IP
address of the IP Phone. These four port ranges are as follows: 5060-5061 (UDP), 53-53 (UDP),
69-69 (UDP), and 10000-20000 (UDP).
Note: By default, the IP Phone uses a dynamic IP address assigned by your router. For port forwarding,
you may need to assign a static IP address to the IP Phone. Contact your Internet phone service provider
for assistance.