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Plantronics CT12 vs CT14 – Wi-Fi Interference

CT12 Headset Phone

CT12 Cordless Headset Phone - 2.4 GHz

Plantronics CT14

CT14 DECT 6.0 Cordless Headset Phone - 1.9 GHz

This week one of my networking friends pointed out that her CT12 would knock out the wireless network in her office, very annoying when you are surfing the internet for critical information, but equally convenient when your children are playing WOW and it’s time for dinner. Since I hadn’t heard of this before, I thought I’d investigate. And voila, the answer is quite obvious.  Here is what I found.  A Wi-Fi signal occupies five channels in the 2.4 GHz band. If a CT12 is placed too close to the router or subscribers in a Wi-Fi network, the CT12 can overwhelm the Wi-Fi signal and knock out the internet.

I called the Plantronics Support line (1-800-544-4660), and they offered some helpful workaround procedures.

1. Make sure your CT12 base is at least 20 feet from the Router and your PC.

2. Change your Router settings to use either channel 1 or 11. This will reduce the chances of the CT12 overlapping the Router signal.

3. Change your Router settings to set the signal strength higher (around 6 or 7 out of 10).  Your neighbors may be able to “see” your Wi-Fi signal at this level, so make sure you have it passworded

4. Upgrade to a CT14. It operates at 1.9GHz and offers better range and less interference.

For detailed product information on the CT14 or other Plantronics wireless headset solutions, please visit the Comfort Telecom Canada website.

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