ZyXEL P-2812HNU-F1 User Guide - Page 279
Phone Calls and VoIP, USB Device Connection
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27.6 Phone Calls and VoIP Chapter 27 Troubleshooting The telephone port won't work or the telephone lacks a dial tone. 1 Check the telephone connections and telephone wire. I can access the Internet, but cannot make VoIP calls. 1 The PHONE light should come on. Make sure that your telephone is connected to the PHONE port. 2 You can also check the VoIP status in the System Info screen. 3 If the VoIP settings are correct, use speed dial to make peer-to-peer calls. If you can make a call using speed dial, there may be something wrong with the SIP server, contact your VoIP service provider. 27.7 USB Device Connection The Device fails to detect my USB device. 1 Disconnect the USB device. 2 Reboot the Device. 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 Device. 27.8 UPnP When using UPnP and the Device reboots, my computer cannot detect UPnP and refresh My Network Places > Local Network. 1 Disconnect the Ethernet cable from the Device's LAN port or from your computer. P-2812HNU(L)-Fx Series User's Guide 279