ᯮ짮 ࠭樨 ஢

 প ⥬ ஢  饣 㯠  ⥣-
 㦨. (B-ISDN - Broadband Integrated Services Digital
Network)  ࠧࠡ⠭ ⮪ ࠭樨 ஢ (Frame Relay).

B-ISDN -  ᮪᪮⭮ ⮪, ।祭  ᭮
 ࠧ  ଠ樨: ,    ( 
).    室,  .25, ⮪ 
࠭樥 ஢ 筮 ।  ᮪ ᪮ ।
, 祬  .25.  ।  ࠭樥 ஢ ४祭 
⨧ ⮢ ⢫  쭮 ஢,  ⫨稥 
। .25,   ந室   ᮪ ⥢ ஢. ⮪
࠭樨 ஢  ᮤন   ⢫ ஫
宦  ४樨 訡 ,     .25.
 ࠧ,  ᯮ짮 ⮪ ࠭樨 ஢ ।-
,  䨧᪨ ஢  ।⠢   
 㧫. ⮪ ࠭樨 ஢ ࠡ⠥  ᪮ ।-
  2 /,   , 祬 .

ᯮ짮 楯 1

   1 -   㯫᭠ ஢ 楯, ⠭-
   窠  砫쭮 ஥஢  ।
஢ 㪮 ᨣ.  楯 1   ᯮ짮
楫  䨧᪨ ⥫,   ஢, ᨠ
, ⮢ ,  ⠪ ࠪ,   ⭨-
  裡.   ⥫䮭  । ᢮
ॡ⥫ 楯 1.   1   ᪮ ।
1,544 /.  ७  ⥫䮭  ᪮쪮 
1 , ᯮ ⥫쭮 㤮, ஢  
 ६ ।   .

ᯮ짮 ᨭ஭
᪨ ⥩ (SONET)

  SONET (Synhronous Optical Network - ஭ -
᪠ ) । ଠ Bellcore.  饥 ६  
㭠த ⠭⮬, ਭ ⠬ CCITT  ANSI. 
SONET ।⠢  裡   ⠬  -
᪨    ஢  ᪮ﬨ ।, -
 51,84 /.  ᪮   -1, -8, -48
 ..  ⮬  砥 Optical Carrier (᪨ ⥫),  ᫮
। ⥫,   室 㬭  -
 51,48   ᥪ㭤  祭 ࠡ祩 ᪮ ।. -
, -8 砥 ࠡ  ᪮ । 2488,32 /.  
SONET   ஭ ࠭ᯮ ᨣ (STS - Synchronous
Transport Signals).  STS-1 ।⠢ 810 ⠬  筮
ଥ.   90 ⮫殢  9 冷,  ⮬ ன

ꥤ    ᫨⥫  373