1030 THE BELL SYSTEM TECHNICAL JOURNAL, SEPTEMBER, 1953 





— vw-* — i^J— 



s 



THROUGH 



r^— 



AAAr 

 s 



^^>_. 



AAAr 



s 



TERMINATING 



(a) PAD IN INTERTOLL TRUNKS 



■—t>^ 



-<H 



THROUGH 



— -<H 



AAAr 

 s 



r-i>— 



TRUNK LOSS 

 UP TO 2DB 



TERMINATING 

 (b) PAD IN TOLL CONNECTING TRUNK 



— 



THROUGH 



^<y— 



TRUNK LOSS 

 2DB OR MORE 



TERMINATING 



(C) USING LOSS OF TOLL CONNECTING TRUNK 

 Fig. 4 — Methods of providing "S". 



