142    2     ________________________

 , Bi-  ;-5     , 
    ,   3   5  
 ,      (   2).

,    110110000001   -
  :

Bi = Ai = 1 (        -
,       )

82  AZ = 1

83 =  - 

4= 4  Bl = 1  1 - 

 = 5  2  1  1 = 

 -     Bi = 0  0  1 ss I

By = ;  4  2 = 0  0  1=1

8=85λ0

9 = ,    4 =" 0  1  0 = 1

 =   By   = 0  1  0 = 1

Bii =   Bg   = 0  0  1-1

Bl2 = Al2    By = 1  1  1 = 1

 ,      110001101111,
      ,   
.

      
,      -
  :

Ci - ,  ;-  Bi-5= (,  Bi-  Bi-5)  Bi-  Bi.5 - Ai.

     ,
   ,    . ,  
ISDN          
  5  23 ,           
18  23 .

        ,
    .

   Bipolar AMI   ,   -
     '.

 . 2.17    B8ZS (Bipolar with 8-Zeros Sub-
stitution)   HDB3 (High-Density Bipolar 3-Zeros)   
AMI.        :  -
    8,      5.

 B8ZS   ,   8 . 
           
: V-1*-0-V-1*. V    ,   
 ,   ,     -
, I*     ,     