Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Description
  5.1 Frame Alignment Signal (FAS)
  5.2 Bit-rate Allocation Signal (BAS)
  5.3 Encryption Control Signal (ECS) channel
      (optional)
  5.4 Remaining capacity
6 Frame structure
  6.1 General
  6.2 Multiframe structure
  6.3 Gain, loss and recovery of frame alignment
  6.4 Gain, loss and recovery of multiframe alignment
  6.5 Procedure to recover octet timing from frame
      alignment
  6.6 Frame structure for interworking between a 64
      kbit/s terminal and a 56 kbit/s terminal
      (optional)
7 Multiple connections
  7.1 Multiple B-connections
  7.2 Multiple H0-connections
8 Introduction to BAS
  8.1 Encoding of the BAS
  8.2 Values of the BAS
9 Connection quality monitoring (optional)
  9.1 Computation of the CRC4 bits
  9.2 Consequent actions
10 Definitions and tables of BAS values
  10.1 Single/first octet BAS values in the initial
       channel
  10.2 Second octet ("escaped") BAS values
  10.3 Multiple-Byte Extension (MBE) BAS values
  10.4 BAS used in additional channels
11 Tables illustrating bit occupancy
Annex A (informative): Bibliography
History

Abstract

To specify a frame structure for in band signalling system using 64 kbit/s to 1929 kbit/s channels.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TE 4
Supersedes	PRETS 300 144 : MAR 91