IEC 60839-7-20:2001
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Alarm systems - Part 7-20: Message formats and protocols for serial data interfaces in alarm transmission systems - Terminal interfaces employing ITU-T Recommendation V.24/V.28 signalling
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
14-10-2022
English, English - French
09-03-2001
FOREWORD
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Layer 7 - Application functions
6 Layer 4 - Transport
7 Layer 2 - Data link
7.1 Configuration
7.2 Transmission system failure
7.3 Unsuccessful transmission
7.4 Connection integrity
8 Layer 1 - Physical
8.1 Transmitted octets
8.2 Signal levels
8.3 Transmission rate
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