ETS 300 144 : 20002
Current
The latest, up-to-date edition.
INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - AUDIOVISUAL SERVICES - FRAME STRUCTURE FOR A 64 KBIT/S TO 1 920 KBIT/S CHANNEL AND ASSOCIATED SYNTAX FOR INBAND SIGNALLING
Hardcopy , PDF
English
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
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