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Chapter 23 Troubleshooting
P-660HWP-Dx User’s Guide
38
1 Check the hardware connections, and make sure the LEDs are behaving as expected. See
the Quick Start Guide and Section 1.4 on page 37.
2 If your ISP gave you Internet connection information, make sure you entered it correctly
in the Network > WAN > Internet Connection screen. These fields are case-sensitive,
so make sure [Caps Lock] is not on.
3 If you are trying to access the Internet wirelessly, make sure the wireless settings in the
wireless client are the same as the settings in the AP.
4 Disconnect all the cables from your device, and follow the directions in the Quick Start
Guide again.
5 If the problem continues, contact your ISP.
V I cannot make Voice over Internet (VoIP) calls through the P-660HWP-Dx.
1 Check your connections. Ensure that the LEDs are behaving as expected (see Section 1.4
on page 37).
2 Ensure that your VoIP account is correctly configured.
3 If you are using Network Address Translation (NAT), make sure that Enable SIP ALG
is activated in the NAT > General screen. See Section 9.3 on page 146.
4 Ensure STUN is turned off on your VoIP device.
5 If you are using a new VoIP account, contact your Internet Telephony Service Provider
(ITSP) to ensure that it is activated.
V I cannot access the Internet anymore. I had access to the Internet (with the P-
660HWP-Dx), but my Internet connection is not available anymore.
1 Check the hardware connections, and make sure the LEDs are behaving as expected. See
the Quick Start Guide and Section 1.4 on page 37.
2 Reboot the P-660HWP-Dx.
3 Turn the P-660HWP-Dx off and on.
4 If the problem continues, contact your ISP.
V The Internet connection is slow or intermittent.
1 There might be a lot of traffic on the network. Look at the LEDs, and check Section 1.4
on page 37. If the P-660HWP-Dx is sending or receiving a lot of information, try closing
some programs that use the Internet, especially peer-to-peer applications.
2 Reboot the P-660HWP-Dx.
3 Turn the P-660HWP-Dx off and on.
4 If the problem continues, contact the network administrator or vendor, or try one of the
advanced suggestions.