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Old 01-07-2008, 09:30 PM   #1 (permalink)
HaTaX
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Lightbulb If you have problems with UMA and bluetooth headsets, check this out.

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So I was at my parents house this weekend and I noticed his Netgear WG602 was not providing a very happy wireless environment. I went round and round with Netgear's firmware and settings available on the stock firmwares and was never able to even get my laptop to provide a consistent speed, nor get much over 40K when downloading files, let alone a stable UMA connection.

So I converted them over to dd-wrt which instantly brought my download speeds to the 400-500K range as well as a rock solid UMA connection.

Point of all of this is that I noticed a new option inside the latest version I loaded on his router I hadn't seen on my Linksys 300N, it was called "Bluetooth coexistence mode".

I did some research on the feature and came up with this PDF that was put out by NXP:
http://www.nxp.com/acrobat_download/...7/75015951.pdf

Turns out that white paper shows the basic idea behind what Bluetooth coexistence mode is and what it helps with. After reading it, I thought that this might just help my use of UMA with a bluetooth headset. Every time I had tried to make a call over UMA with my bluetooth headset it wouldn't even make the call, instead it would drop back to EDGE, I wouldn't even hear a ring, and the call would drop.

After I got home I grabbed the latest release candidate from dd-wrt's download page ( Downloads ) and loaded it onto my 300N and enabled the Bluetooth coexistence mode. And it worked! I can now make a phone call while using my bluetooth headset while on UMA.

I will be doing some more testing, but if you already have loaded dd-wrt on your wireless access point / router then I would suggest you goto their download page and grab the latest release candidate and give it a go.

Post your results in here and lets see if this is a solution to this PITA problem!
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