New Transmission Measuring Systems for Telephone Circuit Maintenance
01 January 1938
New Transmission Measuring Systems for Telephone Circuit Maintenance By F. H. BEST T r a n s m i s s i o n m e a s u r e m e n t s on telephone circuits h a v e l o n g been recognized as essential aids in t h e f u r n i s h i n g of good service. Recent d e v e l o p m e n t work has p r o d u c e d new testing m e t h o d s a n d a p p a r a t u s w h i c h greatly s i m p l i f y a n d expedite transmission measuring. T h i s p a p e r gives a brief description of t h e existing a n d t h e new a r r a n g e m e n t s .