An example of estimation of twisted pair channel capacity in DSL environment

This paper analyses an example of estimation and calculation of channel capacity of twisted pair channel in DSL environment, from point of view of provider, instead of commonly used point of view of manufacturers of terminal equipment. A brief overview of twisted pair as communication channel was given. The channel capacity end-to end with primary parameters as variables was introduced. The results of measurement on real cable in commercial exploitation and its comparison with introduced theoretical approach were shown. The 20-pair, 1000-meter-long cable, completely buried, which had been occupied by 100% by DSL signals and operating in rural conditions, was used.