---

• Recommendation R.111 (11/1988) – CODE AND SPEED INDEPENDENT TDM SYSTEM FOR ANISOCHRONOUS TELEGRAPH AND DATA TRANSMISSION
• 1 64 kbit/s aggregate
  • 1.1 General
  • 1.2 Aggregate bearer channel
  • 1.3 Frame structure
  • 1.4 Type of multiplexing
  • 1.5 Allocation of information bits
  • 1.6 Telegraph and data channels
  • 1.7 Frame alignment
  • 1.8 Loss of telegraph input
  • 1.9 Bearer interface
  • 1.10 Telegraph interface
• 2 Aggregate bearer rates lower than 64 kbit/s
  • 2.1 General
  • 2.2 Aggregate bearer channels
  • 2.3 Frame structure
  • 2.4 Type of multiplexing
  • 2.5 Allocation of information bits
  • 2.6 Telegraph and data channels
  • 2.7 Frame alignment
  • 2.8 Loss of telegraph input
  • 2.9 Bearer interface
  • 2.10 Telegraph interface
• 3 Compatibility
• ANNEX A – Transition coding process
• References