BS 6639:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Guide to DTE/DCE interface control operation using the 25 pole connector
Hardcopy , PDF
English
31-10-1990
15-01-1996
Committees responsible
National foreword
Guide
1. Scope and field of application
2. References
3. Switching to back-up operation
4. Contact number assignment
Annexes
A. State diagrams
B. Proposed new definition for interchange circuit 116
Figures
1. Back-up switching in "Direct Mode"
2. Back-up switching in "Authorized Mode"
Specifies the implementation of a back-up operation for data transmission on a leased line by means of the CCITT Recommendation V.24 interchange circuits when using the 25-pin connector ISO 2110.
| Committee |
IST/6
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 8480:1987 | Identical |
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