Patent ID: 8428224

Claim:
A method for determining an estimate of at least one transmission property of a telecommunication transmission line, the method comprising the steps of: generating an estimate of a complex impedance Z in of the transmission line at a frequency ƒ; generating an estimate of a capacitance, Ĉ, of the transmission line; and generating an estimate of the at least one transmission property of the line in dependence of Ĉ, the frequency ƒ and a value Γ, where Γ satisfies the relationship Γ coth (Γ)=Z in ·jωĈ, and ω=2πƒ; wherein a value X is generated from the relationship Γ coth (Γ) =Z in ·jωĈ, where X is Γ, Γ 2 Γ 2 /ωĈ or one of them multiplied by a predetermined value, or the real, or imaginary part of any one of those, and where X is used to make the estimate of the at least one transmission property; and wherein X is an independent solution for the angular frequency ω.