Apple AirPort Networks Anleitung zur Fehlerbehebung PDF herunterladen (Seite 48)

For 5 GHz:

• Check whether you have 5.8 GHz cordless phones.

• See whether a wireless ISP might be broadcasting over 5 GHz in

your area. Most wISPs are using the

5.8 GHz section of the 5 GHz

band. (If that’s the case note the second bullet item in the solutions

for cordless phones, below.)

Try a Solution

Here are ideas for solving some of the problems noted just previously.

If cordless phones are the culprit:

• Buy new cordless phones that use a band that doesn’t interfere with

your Wi-Fi network. The

popular DECT standard finally entered the

United States a few years ago in its DECT6 version, which relies on

9 GHz signals. You can also find 5.8 GHz cordless phones.

• In 5 GHz, use lower-numbered channels; 5.8 GHz falls within

the

highest range

of channels supported by 802.11n base stations.

(This solution also reduces interference from wireless ISPs, firms

that use 5 GHz to provide residential Internet service.) Using a

lower-numbered channel will reduce the signal strength of your

network by 95 percent, but it might be the only solution in extreme

cases.

If a neighboring network is causing the problem:

• Propose an informal channel usage agreement: if your neighbor

and you are

both using 2.

4 GHz’s channel 6, switch to 1 and 11 to

increase the distance between signals. In 5 GHz, you have a number

of additional channels to choose from.

• You (and your neighbor) could move your access points farther

away from one another to reduce

the signal conflict in the middle.

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Apple AirPort Networks Anleitung zur Fehlerbehebung Seite 48