Troubleshooting
automatically (Auto) or manually change the radio channel currently
used.
• Keep the Ericsson W21 away from electrical devices that disturb the
radio signals, for example microwave ovens.
4.9 Slow or Intermittent Wireless LAN Connection If your wireless connections to the local network are unacceptable slow or
regularly dropping, take the following actions to identify and solve the
problem:
• Move the Ericsson W21 to another location. Make sure that the mobile
network signal is still acceptable before finalizing the installation.
• Make sure that your Ericsson W21 network does not use the same
radio channel as other wireless devices in the premises, for example
security systems. The radio channel is displayed on the Wireless LAN
page. To avoid interference, let the Ericsson W21 select a channel
automatically (Auto) or manually change the radio channel currently
used.
• Keep the Ericsson W21 away from electrical devices that disturb the
radio frequency signals, for example microwave ovens.
• Check that the “Transmit power [dBm]” on the Wireless LAN page is
configured in accordance with your requirements on wireless network
coverage. The maximum (default) value is “20”.
4.10 No Access to Shared Files or Printer If you cannot access a shared storage device or printer connected to the
one of the USB connectors of the Ericsson W21, take the following action
to identify and solve the problem:
• Check that the USB device is detected by the system by looking on the
Event Log web page. Connect the USB device, wait a few seconds
and click the Refresh button. Make sure the “Display” list box is set to
“All”. Move to the bottom of the log using the scroll bar on the right. If
your USB device is recognized you will se some lines like the example
below:
Jan 1 00:07:29 FWT user.info kernel: usb 1-3: new high speed
USB device using ehci_hcd and address 4
Jan 1 00:07:29 FWT user.info kernel: scsi0 : SCSI emulation for
USB Mass Storage devices
Jan 1 00:07:34 FWT user.notice kernel: Vendor:
Model: USB DISK Pro Rev: PMAP
1/1551-CRH 102 167 Uen Rev D 2007-11-16 73