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Chapter 26 Troubleshooting
P-2812HNU-51c User’s Guide
313
1
Check the telephone connections and telephone wire.
2
Make sure you have the VoIP > SIP Account and SIP Service Provider screens
properly configured. The PHONE light should be on when the SIP line is properly
registered.
I can access the Internet, but cannot make VoIP calls.
1
Make sure you have the VoIP > SIP Account and SIP Service Provider screens
properly configured.
2
The PHONE light should come on. Make sure that your telephone is connected to
the PHONE port.
3
You can also check the VoIP status in the Status screen.
26.5 USB Device Connection
The P-2812HNU-51c fails to detect my USB device.
1
Disconnect the USB device.
2
Reboot the P-2812HNU-51c.
3
If you are connecting a USB hard drive that comes with an external power supply,
make sure it is connected to an appropriate power source that is on.
4
Re-connect your USB device to the P-2812HNU-51c.
26.6 Wireless LAN Troubleshooting
I cannot access the P-2812HNU-51c or ping any computer from the WLAN
(wireless AP or router).
Summary of Contents for P-2812HNU-51c
Page 2: ......
Page 8: ...Safety Warnings P 2812HNU 51c User s Guide 8 ...
Page 10: ...Contents Overview P 2812HNU 51c User s Guide 10 ...
Page 19: ...19 PART I User s Guide ...
Page 20: ...20 ...
Page 73: ...73 PART II Technical Reference ...
Page 74: ...74 ...
Page 88: ...Chapter 4 Status Screens P 2812HNU 51c User s Guide 88 ...
Page 118: ...Chapter 5 WAN Setup P 2812HNU 51c User s Guide 118 ...
Page 204: ...Chapter 9 Voice P 2812HNU 51c User s Guide 204 ...
Page 210: ...Chapter 10 File Sharing P 2812HNU 51c User s Guide 210 ...
Page 216: ...Chapter 11 Firewall P 2812HNU 51c User s Guide 216 ...
Page 223: ...Chapter 12 Certificate P 2812HNU 51c User s Guide 223 Figure 99 Certificate Details ...
Page 232: ...Chapter 13 Static Route P 2812HNU 51c User s Guide 232 ...
Page 236: ...Chapter 14 Policy Forwarding P 2812HNU 51c User s Guide 236 ...
Page 252: ...Chapter 16 Quality of Service QoS P 2812HNU 51c User s Guide 252 ...
Page 274: ...Chapter 19 Universal Plug and Play UPnP P 2812HNU 51c User s Guide 274 ...
Page 284: ...Chapter 21 Interface Group P 2812HNU 51c User s Guide 284 ...
Page 288: ...Chapter 22 System Settings P 2812HNU 51c User s Guide 288 ...
Page 292: ...Chapter 23 Logs P 2812HNU 51c User s Guide 292 ...
Page 300: ...Chapter 24 Tools P 2812HNU 51c User s Guide 300 ...
Page 320: ...Chapter 27 Product Specifications P 2812HNU 51c User s Guide 320 ...
Page 336: ...Appendix A Network Troubleshooting P 2812HNU 51c User s Guide 336 ...
Page 376: ...Appendix C Pop up Windows JavaScripts and Java Permissions P 2812HNU 51c User s Guide 376 ...
Page 388: ...Appendix D IP Addresses and Subnetting P 2812HNU 51c User s Guide 388 ...