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Appendix A: Troubleshooting
Common Problems and Solutions
Phone Adapter with 2 Ports for Voice-over-IP
• Set up port forwarding on your router. You must specify that four port ranges be forwarded to the IP
address of the Phone Adapter. These four port ranges are as follows: 5060-5061 (UDP), 53-53 (UDP),
69-69 (UDP), and 10000-20000 (UDP).
Before you set up port forwarding on your router, change two of the Phone Adapter’s settings using its
Interactive Voice Response Menu. First, disable its DHCP feature, and then assign a static IP address to
the Phone Adapter. Refer to “Chapter 4: Using the Phone Adapter’s Interactive Voice Response Menu” for
instructions.
If you have a non-Linksys router, refer to its documentation for instructions.
If you have a Linksys router, then follow these instructions:
1. On one of your networked computers, open your web browser.
2. Access the Router’s Web-based Utility by going to http://192.168.1.1 or the IP address of the Router.
3. A login screen will appear. Leave the User Name field blank. Enter the Router’s password (the default
is admin) in the Password field. Then click the OK button.
4. Click the Applications & Gaming tab, and then click the Port Range Forwarding tab.
5. For each port range you must specify, enter a different name in the Application field. Then enter the
number or range of external port(s) used by the Phone Adapter.
6. Select the protocol you will be using, UDP.
7. Enter the IP address of the Phone Adapter. For example, if the Phone Adapter’s IP address is
192.168.1.100, you would enter 100 in the field provided.
8. Repeat steps 5-7 until you have entered all four port ranges for the Phone Adapter.
9. Check the Enable option for the port services you want to use.
10. When you have completed the configuration, click the Save Settings button.
Application Start and End Protocol IP Address Enable
Internet phone 1 5060 to 5061 UDP (IP address of
Phone Adapter)
X
Internet phone 2 53 to 53 UDP (IP address of
Phone Adapter)
X
Internet phone 3 69 to 69 UDP (IP address of
Phone Adapter)
X
Internet phone 4 10000 to 20000 UDP (IP address of
Phone Adapter)
X