cordless phones blocking wireless signal for router

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I had a TC for a sub constantly losing internet connection with our Cisco wireless modem/router.  It ended up being from her cordless phone.  Whenever she turned her phone on or received a call her wireless signal from the router disappeared.  Afterwards it would be back on like normal.  I'm guessing her phone shared the same freq as our router.  Vtech telezapper model 2551.  More like wireless zapper lol.  Anybody else run into this issue before?

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Microwave ovens can interfere too, mine did. Put in a hot pocket and start the reactor, wifi signal would drop.

Anything that uses 2.4GHz. I swapped the old Linksys WRT54G for a Netgear N600 and all is ok again, it was time for an upgrade anyway. Sometimes changing the router's channel can help.

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I've seen it a few times, once in a way different; 900mhz phone, DOCSIS channels are around 840, the coax was bad letting in ingress, every time the phone rang it blasted the DOCSIS carriers dropping the HSI.

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Come across it many times. The laptop I was issued by my employer has a neat "Congestion Analysis" function, it allows me to see congestion both from wifi networks and from random interference. You can see a spike when you pick up the phone, then choose the least congested channel outside that range.

Inssider http://www.metageek.net/products/inssider/ is a very cool tool for seeing crowded channels, but I don't see anyway to make it show outside interference

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Had it happening with my old 2.4 GHz phone.  It was getting old and having issues, so I got a new 6 GHz and haven't had an issue since.

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Thjs was a 2.4 as well so that makes sense. the sub ended up getting rid of the phone

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I had a TC for a sub constantly losing internet connection with our Cisco wireless modem/router.  It ended up being from her cordless phone.  Whenever she turned her phone on or received a call her wireless signal from the router disappeared.  Afterwards it would be back on like normal.  I'm guessing her phone shared the same freq as our router.  Vtech telezapper model 2551.  More like wireless zapper lol.  Anybody else run into this issue before?

Since the dawn of wireless, the spectrum is available for ANYONE to use for any device. that said the solution is to change the channel the router is on. Phones used to come with a channel button but no longer do. its not just that they use the same frequency range, its that they also lock in on the same channel within that range. Of course buying products that use different ranges helps, I recently had to upgrade to 5Ghz wireless router becasue I live in an apartment and my wife kept loosing wireless, a quick glance at the 2.4Ghz spectrum on SSIDER, and there was no where to run or hide, but no one was using 5Ghz so off I went to Best buy to drop $100 on a new router.

http://www.metageek.net/products/inssider/

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Very common with wireless routers and 2.4 ghz devices as everyone else is saying.... good tool for seeing the channels if you have a smart phone is wifi analyzer which shows what is on what channel and which might be free for you to use with less interference.