Transmission Properties of Filled Thermoplastic Insulated and Jacketed Telephone Cables at Voice and Carrier Frequencies

Interest is increasing in thermoplastic insulated and jacketed cables that are filled to minimize the entry and flow of water within the core. Such cable designs provide reliable, stable transmission characteristics, particularly for the increasingly popular pulse-code modulation (PCM) systems. This paper explores the primary and secondary electrical parameters of filled telephone cables in the voice and carrier frequency range. In addition, data are presented on nearend and far-end crosstalk.