Characteristics of Symmetric Pair Star-Quad Cables Designed Earlier for Analogue Transmission Systems and Being Used Now for Digital System Transmission at Bit Rates of 6 to 34 Mbit/s - Transmission Media Characteristics (Study Group XV) 5 pp
This Recommendation relates to symmetric pair star-quad cables which have been designed earlier and
used to provide 60 or 120 carrier telephone channels of analogue transmission systems on each quad pair.