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Intel® WiFi Products
Interference from 2.4 GHz cordless telephones

Symptom(s):
When a 2.4 GHz cordless telephone is powered on or in use near a wireless LAN access point, network adapter, or another wireless device, the following issues may occur:

  • Connection disconnects
  • Pauses or disruptions in data transmissions
  • Erratic connection behaviors

Cause:
2.4 GHz cordless telephones operate at the same frequencies as 2.4 GHz 802.11b, 802.11g and 802.11n wireless LAN access points, network adapters, and other devices (Bluetooth*, baby monitors, garage door openers, some wireless toys, etc.).

Solution:

One of the following suggestions may help resolve the issue.

  • Change the location of the Access Point and/or the base of the cordless phone.
  • Switch the channel on the Access Point. If that doesn't work, try another channel.
Note Many 2.4 GHz cordless telephones operate with what is called frequency hopping technology. This technology utilizes the entire frequency range also used by 802.11b, 802.11g and 802.11n wireless devices. Thus changing the channel of the Access Point may not eliminate the interference problem.
  • Operate the phone with the antenna lowered, if that is an option.
  • Use a phone that is not a 2.4 GHz phone.

This applies to:
Intel® PRO/Wireless 2000 LAN Access Point
Intel® PRO/Wireless 2011 LAN Access Point
Intel® PRO/Wireless 2011 LAN PC Card
Intel® PRO/Wireless 2011B LAN Access Point
Intel® PRO/Wireless 2011B LAN CF Card
Intel® PRO/Wireless 2011B LAN PC Card
Intel® PRO/Wireless 2011B LAN PCI Adapter
Intel® PRO/Wireless 2011B LAN USB Device
Intel® PRO/Wireless 2100 Network Connection
Intel® PRO/Wireless 2100A Network Connection
Intel® PRO/Wireless 2200BG Network Connection
Intel® PRO/Wireless 2915ABG Network Connection
Intel® PRO/Wireless 3945ABG Network Connection
Intel® PRO/Wireless 5000 LAN Dual Access Point
Intel® WiFi Link 1000
Intel® WiFi Link 5300 and Intel® WiFi Link 5100 products
Intel® WiMAX/WiFi Link 5350 and Intel® WiMAX/WiFi Link 5150 products
Intel® Wireless WiFi Link 4965AGN

Solution ID: CS-004818
Date Created: 06-Jan-2003
Last Modified: 10-Nov-2009
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