During studying the telecom underground cable network I came across the Optical Fiber Cable having the 144 fibers (single mode). I want to know why 144? Is this a Some standard to have 144 fibers in one cable? I have also viewed some of the datasheet having 144 fibers Optical Fiber Cable. I think it might be like that in a single 144 core fibers we avail SDH, Telecommunications and also some fiber spare for future use.