General Order 128
 Section IV
 Requirements for Communication Systems
 
45.3    Supply Private Communication Cables and Conductors
 
A.    Depths
       
    
Ducts, cables and conductors of private communication systems 
are subject to the same depth requirements as those of public communication 
systems.
       
        
B.    Occupancy with Public Communication Systems
                   
    
Private communication cables and conductors owned and 
operated by supply utilities shall not occupy the same duct, but may enter 
the same manhole or other underground splicing chamber which is occupied by
a communication system for public use for the purpose of interconnection.
             
        
C.    Occupancy with Supply Systems
                               
    
Private communication cables and conductors owned 
and operated by supply utilities may occupy the same duct or duct systems 
and other underground structures of supply systems.