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BELL SYSTEM TECHNICAL JOURNAL 



The extent to which various measures of coordination could be 

 applied to reduce the noise induction or to restrict the extent of special 

 arrangements is shown in Table VI. 



TABLE VI 

 Comparison of Effectiveness of Various Remedial Measures 



* Type of station apparatus shown on Table V. 



t Cable was assumed to be grounded at junction pole at end of Section F-G to 2.5 

 ohm ground; at other junction poles to grounds exceeding 10 ohms. 



It is evident from this table that, for the conditions assumed, the 

 use of reasonably coordinated telephone circuit transpositions will be 

 necessary to care for the stations served by open-wire. Ordinarily 

 the use of such transpositions in combination with such other measures 

 as are reasonably effective would serve to take care of the stations 

 served by telephone cable and would limit the extent to which special 

 telephone station apparatus might be needed for the stations served 

 by the longer open-wire extensions. 



