Chapter 25 Troubleshooting
4If the problem continues, contact your ISP.
The Internet connection is slow or intermittent.
1There might be a lot of traffic on the network. Try closing some programs that use the Internet, especially
2Check the signal strength. If the signal strength is low, try moving the ZyXEL Device closer to the AP if possible, and look around to see if there are any devices that might be interfering with the wireless network (for example, microwaves, other wireless networks, and so on).
3Disconnect and
4If the problem continues, contact the network administrator or vendor, or try one of the advanced suggestions.
Advanced Suggestions
•Check the settings for bandwidth management. If it is disabled, you might consider activating it. If it is enabled, you might consider changing the allocations.
•Check the settings for QoS. If it is disabled, you might consider activating it. If it is enabled, you might consider raising or lowering the priority for some applications.
25.4Phone Calls and VoIP
I cannot make telephone calls using the telephone that is connected to the ZyXEL Device.
1Check the telephone connections and telephone wire.
2Make sure you have the VoIP > SIP Settings screen properly configured. See Section 9.3.1 on page 140. The PHONE 1 or PHONE 2 LED should be on when the SIP line is properly registered.
3If you are trying to make a PSTN call, make sure you are using the phone connected to the PHONE 1 port.
25.5Problems With USB Device Connection
The ZyXEL Device fails to detect my USB device.
1Disconnect the USB device.
2Reboot the ZyXEL Device.
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