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g706sum.txt
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1994-11-03
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INTERNATIONAL TELECOMMUNICATION UNION
ITU-T RECOMMENDATION SUMMARY
Rec. No. : G.706
Title : Frame alignment and cyclic redundancy check (CRC) procedures
relating to basic frame structures defined in
Recommendation G.704
Study Group : XV - Transmission Systems and Equipment
Version : Revised
Date of adoption : 1991
Notes :
Recommendation G.706 relates to equipment which receives signals with
basic frame structures as defined in Recommendation G.704. It defines
the frame alignment, the cyclic redundancy check (CRC) multiframe
alignment and CRC bit error monitoring procedures to be used by such
equipment. It contains background information about the use of the
CRC procedures and their limitations.
It gives details of a modified CRC-4 multiframe alignment algorithm
which allows automatic interworking between equipment with and
without a CRC-4 capability. It gives also details regarding the
updating of CRC-4 information when an intermediate equipment
(i.e. between true path terminating equipments) has a write-access to
a message-based data-link facility.
To order the complete text of this Recommendation, please use the
Order Form for ITU-T Recommendations. An electronic version of this
form is available on ITUDOC (Winword: UPI=ITU-5265; ASCII: UPI=ITU-2488).