EXTENSION OF THE TELEPHONE SYSTEM TO SHIPS 159 



Secondly, given a circuit capable of talking, it is necessary that this 

 circuit be flexible in use so that it can be put at the disposal of any 

 land line subscriber for connection to a ship at sea, at any time the 

 ship is within range. This requires that the proper switching facilities 

 be provided and brings in operating and traffic problems. 



Fig. 11 



COMBINED WIRE AND RADIO CIRCUITS 



RegularTelephone Circuits 



Toll Circuit to Ship 

 2 Wire- 4Wire 



Subscriber OrD 1 \ 



! Central Off. " 



Subscriber Distant Toll Office 



iCentraT - 

 : Office 



Fig. 12 



