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From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: sci.electronics
Subject: Re: Telephone Lines
Message-ID: <1991Jan26.163014.1986@athena.cs.uga.edu>
Date: 26 Jan 91 16:30:14 GMT
References: <4574@mindlink.UUCP>
Organization: University of Georgia, Athens
Lines: 14

In article <4574@mindlink.UUCP> Ed_Meyer@mindlink.UUCP (Ed Meyer) writes:
>While in a meeting, one technical "guru" declared that my statement was wrong
>when I said that a telephone was a form of transmission line.  The "guru"
>across the table from me declared that, not only was I totally wrong, but that
>he and a senior engineering in the company had "proven" that a telephone line
>was not a transmission line nor could it be modelled as such.  So, is a
>telephone line a form of transmission line or am I totally wrong as this "guru"
>declare?
>        Ed Meyer

It certainly is a transmission line; in fact, long phone lines have
88-mH inductors inserted into them periodically to keep the transmission
line impedance closer to 600 ohms (which is the source impedance of a
telephone set).