x Contents
8.2 Higher-Order Multiplexing/Hierarchical Multiplexing ............. 193
8.2.1 E2 Multiplexing .................................................................... 194
8.2.2 E1 Bit Rate Variation ............................................................ 196
8.2.3 Justication or Bit Stufng .................................................196
8.2.4 Number of Justication Bits ............................................... 198
8.2.5 Justication Control .............................................................199
8.2.6 E2 Frame Structure .............................................................. 201
8.2.6.1 Set I .........................................................................202
8.2.6.2 Sets II and III ......................................................... ...