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The transmission line has a length labeled delta z, with voltage and current at generator end labeled v (z, t) and i (z, t), and the same marked at load end as v (z plus delta z, t) and i (z plus delta z, t). A vertical crosswire connects the two wires at an approximate midpoint, carrying a parallel connection of a resistor G-prime delta z and a capacitor C-prime delta z. The left arm of top wire carries a resistor R-prime delta z over 2 in series with an inductor L-prime delta z over 2. The right arm carries a resistor and inductor of similar capacities in a series connection.