ISO/TS 26048-1:2025

Intelligent transport systems — Field device Simple Network Management Protocol (SNMP) data interface — Part 1: Global objects

Field devices are a key component in intelligent transport systems (ITS). Field devices include traffic signals, message signs, weather stations, traffic sensors, roadside equipment for connected ITS environments, etc. The ISO 26048 series defines data that can be used to manage field devices, including device configuration, control and monitoring. Field devices can be quite complex, necessitating the standardization of many data concepts for exchange. As such, the ISO 26048 series is divided into several individual parts. This document (ISO/TS 26048-1) introduces the ISO 26048 series, provides content that is normatively referenced in subsequent parts, and defines data that is applicable to the management of a wide range of field devices. The scope of the ISO 26048 series does not define the logic used by the management station, the underlying protocols used to exchange the defined data elements, or internal design of the field device. However, the ISO 26048 series does define functional requirements on the interface and assumes an interface based on an SNMPv3 environment as specified by ISO 15784-2. NOTE Many of the concepts defined in this document were derived from NTCIP 1103[ REF Reference_ref_11 \r \h 1 08D0C9EA79F9BACE118C8200AA004BA90B0200000008000000110000005200650066006500720065006E00630065005F007200650066005F00310031000000 ] and NTCIP 1201[ REF Reference_ref_12 \r \h 2 08D0C9EA79F9BACE118C8200AA004BA90B0200000008000000110000005200650066006500720065006E00630065005F007200650066005F00310032000000 ], however, the design has been updated to better address security concerns. It is expected that future versions of NTCIP will migrate to the design defined in this document.

Systèmes de transports intelligents — Interface de données Simple Network Management Protocol (SNMP) pour les dispositifs de terrain — Partie 1: objets globaux

General Information

• Status: Published
• Publication Date: 17-Jul-2025
• ICS: 35.240.60 - IT applications in transport
• Technical Committee: ISO/TC 204 - Intelligent transport systems
• Drafting Committee: ISO/TC 204 - Intelligent transport systems
• Current Stage: 6060 - International Standard published
• Start Date: 18-Jul-2025
• Due Date: 08-Nov-2025
• Completion Date: 18-Jul-2025

Standards Content (Sample)

Technical
Specification
ISO/TS 26048-1
First edition
Intelligent transport systems —
2025-07
Field device Simple Network
Management Protocol (SNMP) data
interface —
Part 1:
Global objects
Systèmes de transports intelligents — Interface de données
Simple Network Management Protocol (SNMP) pour les
dispositifs de terrain —
Partie 1: objets globaux
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms. 5
5 Conventions and architecture . 6
5.1 ISO maintenance portal .6
5.2 MIB files .6
5.2.1 MIB format .6
5.2.2 MIB access .7
5.2.3 MIB filenames .7
5.3 ASN.1 .7
5.4 Conformance .7
5.5 SNMP terminology .7
5.6 Architecture .8
5.6.1 ITS services .8
5.6.2 Functional view of interface .8
5.6.3 Physical view .8
5.6.4 Communications view .8
5.7 Constraints.9
5.7.1 Table design constraint .9
5.7.2 Access constraints .10
5.8 Outline .10
5.9 Requirements pattern .10
6 User needs .12
6.1 Authenticate users . 12
6.2 Control access to data . 12
6.3 Monitor failed access to the field device . 12
6.4 Manage the field device . 12
6.5 Monitor field device components . 12
6.5.1 Monitor ambient environment . 12
6.5.2 Monitor field device enclosure . 13
6.5.3 Manage enclosure climate control components . 13
6.5.4 Monitor field device power .14
6.5.5 Manage auxiliary ports .14
6.6 Receive notification of triggers firing .14
6.7 Manage device-specific notifications . 15
6.8 Log system events . 15
6.9 Log user-defined data snapshots . 15
6.10 Record a series of data snapshots . 15
6.11 Issue trigger-based commands . 15
6.12 Configure a complex device .16
6.13 Efficient exchange of data .16
6.14 Future user needs .16
6.14.1 Software update .16
6.14.2 Start-up configuration .16
6.14.3 Configuration set management .16
6.14.4 Sequence of constructs within dynamic objects .16
7 High-level design . 17
7.1 Authenticate users design overview .17
7.2 Control access to data design overview .17
7.3 Monitor failed access to the field device .18
7.4 Manage the field device design overview .18

iii
7.5 Monitor field device components .18
7.6 Receive notification of triggers firing design overview .18
7.6.1 General .18
7.6.2 Triggers .19
7.6.3 Action selection .19
7.6.4 Notification factory . 20
7.6.5 Notification channel . 20
7.7 Manage device-specific notifications design overview . 20
7.8 Log system events design overview . 20
7.9 Log user-defined data snapshots design overview . 20
7.10 Record a series of data snapshots design overview .21
7.11 Issue trigger-based commands design overview . 22
7.12 Configure a complex device design overview . 23
7.13 Efficient exchange of data design overview . 23
7.14 Triggers . 23
7.14.1 General . 23
7.14.2 Scheduled triggers design ove
...

FINAL DRAFT
Technical
Specification
ISO/DTS 26048-1.2
ISO/TC 204
Intelligent transport systems —
Secretariat: ANSI
Field device Simple Network
Voting begins on:
Management Protocol (SNMP) data
2025-04-23
interface —
Voting terminates on:
2025-06-18
Part 1:
Global objects
Systèmes de transports intelligents — Interface de données
Simple Network Management Protocol (SNMP) pour les
dispositifs de terrain —
Partie 1: objets globaux
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/DTS 26048-1.2:2025(en) © ISO 2025

FINAL DRAFT
ISO/DTS 26048-1.2:2025(en)
Technical
Specification
ISO/DTS 26048-1.2
ISO/TC 204
Intelligent transport systems —
Secretariat: ANSI
Field device Simple Network
Voting begins on:
Management Protocol (SNMP) data
interface —
Voting terminates on:
Part 1:
Global objects
Systèmes de transports intelligents — Interface de données
Simple Network Management Protocol (SNMP) pour les
dispositifs de terrain —
Partie 1: objets globaux
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DTS 26048-1.2:2025(en) © ISO 2025

ii
ISO/DTS 26048-1.2:2025(en)
Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms. 5
5 Conventions and architecture . 6
5.1 ISO maintenance portal .6
5.2 MIB files .6
5.2.1 MIB format .6
5.2.2 MIB access .7
5.2.3 MIB filenames .7
5.3 ASN.1 .7
5.4 Conformance .7
5.5 SNMP terminology .7
5.6 Architecture .8
5.6.1 ITS services .8
5.6.2 Functional view of interface .8
5.6.3 Physical view .8
5.6.4 Communications view .8
5.7 Constraints.9
5.7.1 Table design constraint .9
5.7.2 Access constraints .10
5.8 Outline .10
5.9 Requirements pattern .10
6 User needs .12
6.1 Authenticate users . 12
6.2 Control access to data . 12
6.3 Monitor failed access to the field device . 12
6.4 Manage the field device . 12
6.5 Monitor field device components . 12
6.5.1 Monitor ambient environment . 12
6.5.2 Monitor field device enclosure . 13
6.5.3 Manage enclosure climate control components . 13
6.5.4 Monitor field device power .14
6.5.5 Manage auxiliary ports .14
6.6 Receive notification of triggers firing .14
6.7 Manage device-specific notifications . 15
6.8 Log system events . 15
6.9 Log user-defined data snapshots . 15
6.10 Record a series of data snapshots . 15
6.11 Issue trigger-based commands . 15
6.12 Configure a complex device .16
6.13 Efficient exchange of data .16
6.14 Future user needs .16
6.14.1 Software update .16
6.14.2 Start-up configuration .16
6.14.3 Configuration set management .16
6.14.4 Sequence of constructs within dynamic objects .16
7 High-level design . 17
7.1 Authenticate users design overview .17
7.2 Control access to data design overview .17
7.3 Monitor failed access to the field device .18
7.4 Manage the field device design overview .18

iii
ISO/DTS 26048-1.2:2025(en)
7.5 Monitor field device components .18
7.6 Receive notification of triggers firing design overview .18
7.6.1 General .18
7.6.2 Triggers .19
7.6.3 Action selection .19
7.6.4 Notification factory . 20
7.6.5 Notification channel . 20
7.7 Manage device-specific notifications design overview .
...

ISO/DTS 26048-1.2
ISO/TC 204
ISO/TS 26048-1:2024(en)
Date:2025-02-01
Secretariat: ANSI
Date: 2025-04-23
Intelligent transport systems — Field device Simple Network
Management Protocol (SNMP) data interface —Part 1:
Global objects
Part 1:
Global objects
Systèmes de transports intelligents - — Interface de données Simple Network Management Protocol (SNMP)
pour les équipements en borddispositifs de routeterrain —
Partie 1: objets globaux
ISO/AWI TSDTS 26048-1:2024(.2:(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
E-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO/DTS 26048-1:2024(.2:(en)
Contents
Foreword . viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 5
5 Conventions and architecture . 6
6 User needs . 14
7 High-level design . 18
8 Requirements. 35
9 Dialogues . 96
10 Security . 103
Annex A (informative) Conformance . 105
Annex B (informative) Management information base (MIB) summary . 108
Bibliography . 110

Foreword . viii
Part 1: Global objects . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 5
5 Conventions and architecture . 6
5.1 ISO maintenance portal . 6
5.2 MIB files . 6
5.3 ASN.1 . 6
5.4 Conformance . 7
5.5 SNMP terminology . 7
5.6 Architecture. 7
5.6.1 ITS services . 7
5.6.2 Functional view of interface . 7
5.6.3 Physical view . 7
5.6.4 Communications view . 8
5.7 Constraints . 9
5.7.1 Table design constraint . 9
5.7.2 Access constraints . 9
5.8 Outline. 9
5.9 Requirements pattern . 9
6 User needs . 11
6.1 Authenticate users . 11
6.2 Control access to data . 11
6.3 Monitor failed access to the field device . 11
6.4 Manage the field device . 12
iii
ISO/AWI TSDTS 26048-1:2024(.2:(en)
6.5 Monitor field device components . 12
6.5.1 Monitor ambient environment . 12
6.5.2 Monitor field device enclosure . 12
6.5.3 Manage enclosure climate control components . 12
6.5.4 Monitor field device power . 13
6.5.5 Manage auxiliary ports . 14
6.6 Receive notification of triggers firing . 14
6.7 Manage device-specific notifications . 14
6.8 Log system events . 14
6.9 Log user-defined data snapshots . 14
6.10 Record a series of data snapshots . 15
6.11 Issue trigger-based commands . 15
6.12 Configure a complex device . 15
6.13 Efficient exchange of data . 15
6.14 Future user needs . 15
6.14.1 Software update . 15
6.14.2 Start-up configuration . 16
7 High-level design . 16
7.1 Authenticate users design overview . 16
7.2 Control access to data design overview . 16
7.3 Monitor failed access to the field device . 17
7.4 Manage the field device design overview . 17
7.5 Monitor field device components . 17
7.6 Receive notification of triggers firing design overview . 17
7.6.1 General . 17
7.6.2 Triggers . 18
7.6.3 Action selection . 18
7.6.4 Notification Factory . 19
7.6.5 Notification channel . 19
7.7 Manage device-specific notifications design overview . 19
7.8 Log system events design overview . 19
7.9 Log user-defined data snapshots design overview . 20
7.10 Record a series of data snapshots design overview . 20
7.11 Issue trigger-based commands design overview . 21
7.12 Configure a complex device design overview . 22
7.13 Efficient exchange of data design overview . 23
7.14 Triggers . 23
7.14.1 General . 23
7.14.2 Scheduled triggers design overview . 23
7.14.3 Day plan triggers design overview . 24
7.14.4 Condition-based triggers design overview . 24
8 Requirements. 25
8.1 Action feature . 25
8.1.1 Action feature definition . 25
8.1.2 Action feature data exchange requirements . 26
8.1.3 Action feature functional requirements . 27
8.2 Clock feature . 27
8.2.1 UTC Clock .
...

FINAL DRAFT
Technical
Specification
ISO/DTS 26048-1
ISO/TC 204
Intelligent transport systems —
Secretariat: ANSI
Field device Simple Network
Voting begins on:
Management Protocol (SNMP) data
2024-09-18
interface —
Voting terminates on:
2024-11-13
Part 1:
Global objects
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/DTS 26048-1:2024(en) © ISO 2024

FINAL DRAFT
ISO/DTS 26048-1:2024(en)
Technical
Specification
ISO/DTS 26048-1
ISO/TC 204
Intelligent transport systems —
Secretariat: ANSI
Field device Simple Network
Voting begins on:
Management Protocol (SNMP) data
interface —
Voting terminates on:
Part 1:
Global objects
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DTS 26048-1:2024(en) © ISO 2024

ii
ISO/DTS 26048-1:2024(en)
Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms. 5
5 Conventions and architecture . 6
5.1 ISO maintenance portal .6
5.2 MIB files .6
5.3 ASN.1 .6
5.4 Conformance .6
5.5 SNMP terminology .6
5.6 Architecture .6
5.6.1 ITS services .6
5.6.2 Functional view of interface .6
5.6.3 Physical view .6
5.6.4 Communications view .7
5.7 Constraints.8
5.7.1 Table design constraint .8
5.7.2 Access constraints .8
5.8 Outline .8
5.9 Requirements pattern .9
6 User needs . 10
6.1 Authenticate users .10
6.2 Control access to data .10
6.3 Monitor failed access to the field device .11
6.4 Manage the field device .11
6.5 Monitor field device components .11
6.5.1 Monitor ambient environment .11
6.5.2 Monitor field device enclosure .11
6.5.3 Manage enclosure climate control components . 12
6.5.4 Monitor field device power . 12
6.5.5 Manage auxiliary ports . 13
6.6 Receive notification of triggers firing . 13
6.7 Manage device-specific notifications . 13
6.8 Log system events . 13
6.9 Log user-defined data snapshots . 13
6.10 Record a series of data snapshots .14
6.11 Issue trigger-based commands .14
6.12 Configure a complex device .14
6.13 Efficient exchange of data .14
6.14 Future user needs .14
6.14.1 Software update .14
6.14.2 Start-up configuration .14
7 High-level design .15
7.1 Authenticate users design overview . 15
7.2 Control access to data design overview . 15
7.3 Monitor failed access to the field device .16
7.4 Manage the field device design overview .16
7.5 Monitor field device components .16
7.6 Receive notification of triggers firing design overview .16
7.6.1 General .16
7.6.2 Triggers .17
7.6.3 Action selection .17

iii
ISO/DTS 26048-1:2024(en)
7.6.4 Notification factory .18
7.6.5 Notification channel .18
7.7 Manage device-specific notifications design overview .18
7.8 Log system events design overview .18
7.9 Log user-defined data snapshots design overview .18
7.10 Record a series of data snapshots design overview .19
7.11 Issue trigger-based commands design overview . 20
7.12 Configure a complex device design overview .21
7.13 Efficient exchange of data design overview .21
7.14 Triggers .
...

ISO/DTS 26048-1
ISO/TC 204
ISO/AWI TS 26048-1(en)
Secretariat:  ANSI
Date: 2024-09-04
Intelligent transport systems — Field device Simple Network
Management Protocol (SNMP) data interface —
Part 1:
Global objects
Systèmes de transports intelligents - Interface de données SNMP pour les équipements en bord de route —
Partie 1: objets globaux
ISO/AWI TSDTS 26048-1:2024(:(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
E-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO/AWI TSDTS 26048-1:2024(:(en)
Contents
Foreword . viii
Part 1: Global objects . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 5
5 Conventions and architecture . 6
5.1 ISO maintenance portal . 6
5.2 MIB files . 6
5.3 ASN.1 . 6
5.4 Conformance . 7
5.5 SNMP terminology . 7
5.6 Architecture . 7
5.6.1 ITS services . 7
5.6.2 Functional view of interface. 7
5.6.3 Physical view . 7
5.6.4 Communications view . 8
5.7 Constraints . 9
5.7.1 Table design constraint . 9
5.7.2 Access constraints . 9
5.8 Outline . 9
5.9 Requirements pattern . 9
6 User needs . 11
6.1 Authenticate users . 11
6.2 Control access to data . 11
6.3 Monitor failed access to the field device . 11
6.4 Manage the field device . 12
6.5 Monitor field device components . 12
6.5.1 Monitor ambient environment . 12
6.5.2 Monitor field device enclosure . 12
6.5.3 Manage enclosure climate control components . 12
6.5.4 Monitor field device power . 13
6.5.5 Manage auxiliary ports . 14
6.6 Receive notification of triggers firing . 14
6.7 Manage device-specific notifications . 14
6.8 Log system events . 14
6.9 Log user-defined data snapshots . 14
6.10 Record a series of data snapshots . 15
6.11 Issue trigger-based commands . 15
6.12 Configure a complex device. 15
6.13 Efficient exchange of data . 15
6.14 Future user needs . 15
6.14.1 Software update . 15
6.14.2 Start-up configuration . 16
7 High-level design . 16
7.1 Authenticate users design overview . 16
7.2 Control access to data design overview . 16
7.3 Monitor failed access to the field device . 17
7.4 Manage the field device design overview. 17
iii
ISO/AWI TSDTS 26048-1:2024(:(en)
7.5 Monitor field device components . 17
7.6 Receive notification of triggers firing design overview . 17
7.6.1 General. 17
7.6.2 Triggers . 18
7.6.3 Action selection . 18
7.6.4 Notification Factory . 19
7.6.5 Notification channel . 19
7.7 Manage device-specific notifications design overview . 19
7.8 Log system events design overview . 19
7.9 Log user-defined data snapshots design overview . 20
7.10 Record a series of data snapshots design overview . 20
7.11 Issue trigger-based commands design overview . 21
7.12 Configure a complex device design overview . 22
7.13 Efficient exchange of data design overview . 23
7.14 Triggers . 23
7.14.1 General. 23
7.14.2 Scheduled triggers design overview . 23
7.14.3 Day plan triggers design overview . 24
7.14.4 Condition-based triggers design overview . 24
8 Requirements . 25
8.1 Action feature . 25
8.1.1 Action feature definition . 25
8.1.2 Action feature data exchange requirements. 26
8.1.3 Action feature functional requirements . 27
8.2 Clock feature . 27
8.2.1 UTC Clock . 27
8.2.2 Local clock . 29
8.2.3 Daylight saving time . 30
8.3 Command feature . 30
8.3.1 Command feature definition . 30
8.3.2 Command feature data exchange requirements . 31
8.3.3 Command feature capability requirements . 32
8.3.4 Command feature functional requirements . 32
8.4 Conditional trigger feature . 32
8.4.1 Conditional trigger feature definition . 32
8.4.2 Conditional trigger feature data exchange requirements . 32
8.4.3 Conditional trigger feature functional requirements. 33
8.4.4 Conditional trigger feature capability requirements . 33
8.5 Controller feature .
...