INSTALLATION OF FIXED EQUIPMENT 



105 



Branch line may be answered at the same time, thus avoiding delay or interruption. 

 When it is necessary to connect the grounded line to the metallic line, both switches 

 should be closed, only one telephone being left across the line. 



Fig. 58 Connecting grounded line to metallic line through a repeating coil 

 without switches. Dotted lines indicate connections when an 

 8-A coil is used 



Fig. i59 Connecting grounded line to metallic line by use of switches and two 



telephones 



A method of connecting a grounded line to a metallic line so that either can be 

 used with the same telephone is shown in Fig. 60. 



