User's Guide

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  :    PBX   ISDN
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  :       
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  : / 
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  : /    
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  :      )  (
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  : /    
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  : /      
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  : /        
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  :  /        
      
          )  (   
   . 
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        
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    
             .
١.       
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  
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.
      )  (.
.  .
.    —    2.
٢.         .
●DSL :    )DSL (     ) .  DSL ADSL
 /(.
●PBX :    )PBX.(
●ISDN :     )ISDN.(
●   :           
   .
●  :          
 .
●    :         . 
            :
–    
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       
  
–            
 
–           
ARWW    ٧٢