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BELL SYSTEM TECHNICAL JOURNAL 



equal eind opposite or "balanced" currents in the two wires of the 

 disturbing circuit and equal currents in phase in the two wires. The 

 latter may be called "tertiary circuit" currents. The charges on the 

 two wires of the disturbing circuit may be similarly divided into 

 components. 



TO LONG 



'circuits 



^Qb 



■ab 



TO LONG 

 CIRCUITS ' 



\ I 



Hcicb 



CA) 



\ I 



\ I. 



Tacb 



^ N 



(B) 



(C) CD) 



Fig. 2 — Transverse and interaction crosstalk. 



The direct component of the transverse crosstalk coupling is defined 



as that part which is due to balanced charges and currents in the 



disturbing circuit.^ The indirect component is defined as that part 



2 " Direct" is here used in a different sense from that used in connection with the 

 tej-m "direct'capacity unbalance" which was originated by Dr. G. A. Campbell and 

 has been much used in discussions of cable crosstalk. 



( 



