A communication cable is provided that satisfies the requirement of Cat.6 for near-end cross talk wherein the difference between the maximum and minimum values of
delay time among the four twisted wire pairs constituting the cable is within 25 ns / 100 m. The communication cable is made by entwining four twisted wire pairs (T1), (T2), (T3), (T4) made by twisting pairs of insulated wires made by covering
electrically conductive wires by
polyolefin thermoplastic resin with each pair being twisted with a twist
pitch different from the others (
pitch: P1<P2<P3<P4) and the inter-pair
interposer (6) made of
polyolefin thermoplastic resin, while being entwined with each wire pair, around a central
interposer (2) made of
polyolefin thermoplastic resin having cross sectional area of S1. Cross sectional area S1 of the central
interposer (2) satisfies the relationship of inequality S1>=[{4.1 d / (1+{square root over (2)})}.0.35]2xpi, while the inter-pair interposer (6) that is entwined with the twisted wire pairs is located at such a position as adjoins the twisted wire pair (T1) having the least
pitch P1 and does not adjoin the twisted wire pair (T4) having the largest pitch P4.