Need way to direct connect laptop to home network

[MDS59]

My home office is in my basement and I have an unused phone line and a coax connection. I need a way to get a cat5 connection in my office and then run this to my home router on the first floor of my home. I have wireless, but I am trying to use Cisco Jabber and the wireless does not provide sufficient bandwidth and my calls are cutting out.
Is there a way to use either the existing phone line or coax as the wire between my office and home router?

 

[frowertr]

Have you checked into MoCa? May be the easiest way so long as you have coax near your home router.
http://www.netgear.com/service-provider/products/powerline-and-coax/moca/default.aspx

 

[jlazzaro]

i use Jabber for audio and video calls all day on my wireless connection...your problem isn't bandwidth, it's interference & packet loss. try setting your wifi router to channels wireless 1, 6, or 11.

edit: and http://forums.anandtech.com/showthread.php?t=264338