Table of Contents
1General
2FramealignmentandCRCproceduresatl544kbit/s
interface
2.1Lossandrecoveryofframealignment
2.2CRCbitmonitoring
3FramealignmentandCRCproceduresat6312kbit/s
interface
3.1Lossandrecoveryofframealignment
3.2CRCbitmonitoring
4FramealignmentandCRCproceduresat2048kbit/s
interface
4.1Lossandrecoveryofframealignment
4.2CRCmulti-framealignmentusinginformationin
bit1ofthebasicframe
4.3CRCbitmonitoring
5FramealignmentandCRCproceduresat8448kbit/s
interface
ANNEXA-Backgroundinformationontheuseofcyclic
redundancycheck(CRC)procedures
A.1ReasonsforapplicationofCRC
A.2LimitationsofCRCprocedures
ANNEXB-ModifiedCRC-4multi-framealignmentalgorithm
toallowautomaticinterworkingbetween
equipmentswithandwithoutaCR
B.1General
B.2ModifiedCRC-4multi-framealignmentalgorithm
ANNEXC-CRC-4checksumupdatingprocedureatintermediate
pathpointsinamessage-baseddata-link
application
C.1General
C.2Mathematicalproofofvalidityofupdating
procedure
C.3Anexampleofaconceptualbasisforimplementing
theupdatingprocess108
Bibliography Abstract
Relates to equipment that receives signals with basic frame structures as defined in G.704. Defines the frame alignment, CRC bit error monitoring procedures, the cyclic redundancy check (CRC) multiframe alignment to be used by such equipment.
