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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. CEI/IEC 60839-7-20:2001. Original standard IEC 60839-7-20-2001 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Alarm systems - Part 7-3- Message formats and protocols for serial data interfaces in alarm transmission systems - Common data link layer protocol. CEI/IEC 60839-7-3:2001. Original standard IEC 60839-7-3-2001 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Alarm systems - Part 7-4- Message formats and protocols for serial data interfaces in alarm transmission systems - Common transport layer protocol. CEI/IEC 60839-7-4:2001. Original standard IEC 60839-7-4-2001 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Alarm systems - Part 7-5- Message formats and protocols for serial data interfaces in alarm transmission systems - Alarm system interfaces employing a two-wire configuration in accordance with ISO IEC 8482. CEI/IEC 60839-7-5:2001. Original standard IEC 60839-7-5-2001 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Alarm systems - Part 7-6- Message formats and protocols for serial data interfaces in alarm transmission systems - Alarm system interfaces employing ITU-T Recommendation V.24 V.28 signalling. CEI/IEC 60839-7-6:2001. Original standard IEC 60839-7-6-2001 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Alarm systems - Part 7-7- Message formats and protocols for serial data interfaces in alarm transmission systems - Alarm system interfaces for plug-in alarm system transceivers. CEI/IEC 60839-7-7:2001. Original standard IEC 60839-7-7-2001 in PDF full version. Additional info + preview on request

Document status: Withdrawn