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Chapter 20 Troubleshooting
User’s Guide
234
1 Check the telephone connections and telephone wire.
2 Make sure you have the VOICE > Service Configuration > SIP Settings
screen properly configured (Chapter 10 on page 111).
I can access the Internet, but cannot make VoIP calls.
1 Make sure you have the VOICE > Service Configuration > SIP Settings
screen properly configured (Chapter 10 on page 111).
2 The VoIP LED should come on. Make sure that your telephone is connected to the
VoIP port (see the Quick Start Guide for information on connecting telephone
cables to the these ports).
3 You can also check the VoIP status in the Status screen.
4 If the VoIP settings are correct, use speed dial to make peer-to-peer calls. If you
cannot make a call using speed dial, there may be something wrong with the SIP
server. Contact your VoIP service provider.
Problems With Multiple SIP Accounts
You can set up two SIP accounts on your WiMAX Modem. By default your WiMAX
Modem uses SIP account 1 for outgoing calls, and it uses SIP accounts 1 and 2 for
incoming calls. With this setting, you always use SIP account 1 for your outgoing
calls and you cannot distinguish which SIP account the calls are coming in
through. If you want to control the use of different dialing plans for accounting
purposes or other reasons, you need to configure your phone port in order to
control which SIP account you are using when placing or receiving calls.
20.5 Reset the WiMAX Modem to Its Factory
Defaults
If you reset the WiMAX Modem, you lose all of the changes you have made. The
WiMAX Modem re-loads its default settings, and the password resets to 1234. You
have to make all of your changes again.