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65 Messages

 • 

1.1K Points

Sat, Mar 12, 2016 10:47 AM

Answered

audiosystem interference

I have a network of ZD3000 and 7 R500 access point in a conference room.
At the same time there is an audio system (Digiwave 2.0) in the conference room.
When audio system turned on there is a lot of packet loss on my wifi network.
When audio system turned off all become ok from the wifi.
After investigation audiosystem use also 2.4GHe band.
Can you give me a solution to fight againt this?

Responses

74 Messages

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1.6K Points

5 years ago

I came across this exact same issue in a hotel, they were using a wireless audio transmitter to send audio from the tv to speakers in the bathroom.

Most of these audio senders are quite 'dumb' and will occupy the RF spectrum continuously (aka 100% duty cycle) so there is no way wifi will work.

The solution in our case was to remove the audio transmitters. You could also see what frequencies are being used by the transmitters and exclude them from the APs (in the AP Group -> Channel Range settings.

65 Messages

 • 

1.1K Points

Hi..thank for your answer.
In my case transmitter seems use all the 2.4GHZ channel.
What i can do?

74 Messages

 • 

1.6K Points

I doubt it uses the whole 2.4ghz spectrum. It might be that it is auto selecting, in that it will pick a channel on startup. It would be best to use a spectrum analyser to see what th audio transmitter is doing. Your Ruckus APs can do spectrum analysis. Look for it in Monitor -> APs, then select the AP in your conference room. There is a small 'rainbow' button in the Actions section.

74 Messages

 • 

1.6K Points

In my hotel case, the transmitters would use 20mhz wide channels (like wifi) but would switch channels automatically if they sense any interference, and there was no way of stopping them from doing so.... Very ugly system, but this is why our only solution was to remove the audio transmitters.

You could also consider running your APs on 5ghz only, as long as all the wifi clients are dual band.

65 Messages

 • 

1.1K Points

I will check and let you know thank a lot

301 Messages

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4.8K Points

5 years ago

Hi Ismael,

As you might have a different system as Andrea saw, I would suggest to check which channel the audio system uses, and check if that is fixed channel.
And then try the AP configured on a different channel.

Kind regards
Martin
Brand User

2.6K Messages

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44.8K Points

5 years ago

Hello,

    From your description that you saw all-band interference, the audio system might use FHSS
which will negatively affect your WiFi in the 2.4GHz band.  If so, Andrea's suggestion to define
all your SSIDs only on 5GHz would likely be a feasible workaround, as most WiFi clients today
have dual-band capabilities.

   Rather than 'delete' your topic, I'll mark it as 'answered', thanks!

1 Message

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60 Points

5 years ago

What type of control you have for your system?
Also please share the specifications of the ZD3000 and 7R500.
Please check the dual band capacity of 2.4Ghz for your system.

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