I have a D-Link Dgl 4500 wireless N router. Is there any way that it can affect call quality? Reason I ask is because my call quality is bad all of a sudden. Its both my iP4 and my blackberry. I have a linksys router that isnt wireless-N and when I install that one call quality goes back to normal. For now I'm staying with the linksys untill I figure it out.