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#Signal Strength Signal Strength Fluctuations
#MacOS 10.5.5 Connection problems after upgrading to version 10.5.5
#3945ABG Intel(r) PRO/Wireless 3945ABG connection problems
#4965AGN Intel(r) Wireless WiFi Link 4965AGN connection problems



The wireless solution at UTD is largely based on time slicing instead of juggling radio channels with micro cells. All of the access points in a given building are set to the same channel.

The signal strength indicator on a wireless device will most likely fluctuate in fairly steady up and down cycle as the wireless controller slices time on the access points. Whatever the strongest signal seen is what the client is actually using.

This also means that simply looking at the signal strength indicator is not necessarily a good indicator of connection performance.

A simple test is to ping ping.utdallas.edu. Average results below 100 ms are acceptable.

Another simple test can be found here. http://www.speedtest.net



Connection problems after upgrading to version 10.5.5
Issue first reported September 2008

Symptoms
Computer can see the wireless network but is unable to connect with it.

Description
MacOS machines that have been upgraded from 10.5.3 to 10.5.4 and then to 10.5.5 may have problems. The 10.5.5 appears to either corrupt or not be able to properly use connection profiles that were configuerd whil the machine was running 10.5.3. This does not affect machines with fresh installations of 10.5.5 nor those upgraded to 10.5.5 from fresh installations of 10.5.4.

Solution
Delete/remove faulty profiles and reconfigure them.



Intel(r) PRO/Wireless 3945ABG wireless chipset
Issue first reported March 2008

Symptoms

Description
Intel(r) PRO/Wireless 3945ABG users with older drivers may have trouble connecting or staying connected to the wireless network.

Solution
Currrent drivers have shown to solve this issue. Driver updates can be found at the following link.
http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=2259

Note
In some cases, the next time Windows Update is run, it overwrites the newly updated drivers. It only does this once. If this happens, simply update the drivers one more time and Windows Update will leave them alone.



Intel(r) Wireless WiFi Link 4965AGN wireless chipset
Issue first reported March 2008

Symptoms

Description
Intel(r) Wireless WiFi Link 4965AGN users with older drivers may have trouble connecting or staying connected to the wireless network.

Solution
Currrent drivers have shown to solve this issue. Driver updates can be found at the following link.
http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=2753

Note
In some cases, the next time Windows Update is run, it overwrites the newly updated drivers. It only does this once. If this happens, simply update the drivers one more time and Windows Update will leave them alone.



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