CABLE CARRIER TELEPHONE TERMINALS 



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for ease in patching and testing. There are in general five major 

 divisions of the terminal equipment consisting of channel modem bays, 

 group modem bays, carrier supply bays, high-frequency testboard, and 

 four-wire voice-frequency patching board and associated voice termin- 



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Fig. 10— Cabling of high-frequency jack bay. 



ating equipment. The general arrangement in an office is such as to 

 simplify the cabling between various groups of equipment 



The cabling of a high-frequency jack bay, shown in Fig. 10, illustrates 

 the congested wiring condition occurring when a large number of heavy 



