Internet problem?

hi guys,

found out there seems problem home wireless connection, , figured out that, every time picks our home's landline phone, or calls using landline phone, wireless connection times out. doesn't seem affecting else's computer (both through ethernet , wifi), it's quite weird , have no idea issue is. suggestions?

 

so affect mac?
, if so, exact mac exact mac os x version use , router wireless settings use?

 

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