Connecting a Phone to a RJ45 Jack

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	Question by Dan Woods posted 27 Aug 2003
	Connecting a Phone to a RJ45 Jack
I was reading your response to another reader's questions, but you forgot to answer the following question: "I've read that one should use cat 5e cable for telephone wiring, and I've seen RJ45 outlets pictured as the outlet of choice for telephones. The 4-pair makes good sense to me, but I don't understand how one connects a telephone to the RJ45 outlet. Is this as simple as using a cable with a RJ45 jack at one end (wall outlet) and a RJ11 jack at the other end (phone input)? I feel stupid asking this, but everything I've read seems to assume that the reader already somehow knows this" Thanks, Dan
	Answer by Dmitri Abaimov posted 29 Aug 2003
Dear Dan, Sorry, I really forgot to answer that one. It is really an easy one: RJ-11 plug fits right into RJ-45 jack, with pairs #1 converging. Note: NONE of the other pairs converge in such connection unless RJ45 is terminated using USOC pinout. However, connection pair #1 of the RJ11 to pair #1 of the RJ45 makes analog phones work. Sincerely, Dmitri Abaimov, RCDD
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