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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by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
15-01-1996
English
31-10-1990
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Superseded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 |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.