554     6   

 4      DSP  High-Order Domain Spesific Part
(HO-DSP),    ,  ,   -
  ,        -
   PNNI,  ,    
CIDR   IP.

 6        End System Identifi-
er (ESI),    -  ,    
  - IEEE.

 1    ,     

 ,      .

         , -
   ,    -
    Forum.     IDI  2 ,
    Forum,  ISO,     DSP
     ,   HO-DSP 
 4,  10 .

 ESI     -  -
   IEEE,   3     , 
     ,     -
 .

         -
  .       
ESI-,        ,  
 ,    .

    CALL SETUP  Q.2931,   -
      , -
  ,      QpS. 
       
 ,         -
   .  ,    -
      CALL SETUP  
      ,   ,  -
 .

      

       -
         
   ,    -
 (service categories)    .  
    ,    
       AAL. 
    AAL,      , 
     .     
,      ,   
 AAL  .      
  UNI    Q.2931   -