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IEC 60839-7-12:2001
Alarm systems - Part 7-12: Message formats and protocols for serial data interfaces in alarm transmission systems - PTT interfaces for dedicated communications channels using ITU-T Recommendation V.23 signalling
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Summary
Specifies the requirements for standard interfaces between the alarm system transceivers and transmission network where both form part of a dedicated channel alarm transmission system as defined in IEC 60839-5-4.
Technical characteristics
| Publisher | International Electrotechnical Commission (IEC) |
| Publication Date | 03/09/2001 |
| Release Date | 03/09/2001 |
| Cancellation Date | 10/14/2022 |
| Edition | 1 |
| Page Count | 13 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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