SIST EN 300 338-5 V1.3.1:2020

ETSI EN 300 338-5 V1.3.1 (2020-06)






EUROPEAN STANDARD
Technical characteristics and methods of measurement
for equipment for generation, transmission
and reception of Digital Selective Calling (DSC)
in the maritime MF, MF/HF and/or VHF mobile service;
Part 5: Handheld VHF Class H DSC

---------------------- Page: 1 ----------------------
2 ETSI EN 300 338-5 V1.3.1 (2020-06)



Reference
REN/ERM-TGMAR-603
Keywords
DSC, GMDSS, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI EN 300 338-5 V1.3.1 (2020-06)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 10
4 Controls and Indicators in handheld Class H DSC Equipment . 10
4.1 Visual indication . 10
4.1.0 General . 10
4.1.1 Primary DSC alphanumeric display . 10
4.1.1.0 General Requirements . 10
4.1.1.1 Additional display information . 11
4.1.2 Handling visual information . 11
5 Technical requirements . 11
5.1 Facilities for DSC transmission and reception . 11
5.1.1 GNSS receiver . 11
5.1.2 CH:70 receiver . 11
5.2 Facilities for coding and decoding of DSC . 11
5.2.1 Call functions . 11
5.2.2 INDIVIDUAL calls . 12
5.2.3 ALL SHIPS calls . 12
5.2.4 DSC call functionality . 12
6 Automated and Non-Automated Procedure Requirements in handheld Class H DSC Equipment . 13
6.1 Introduction . 13
6.2 Non-automated features . 13
6.2.1 DSC Message Composition . 13
6.2.2 Transmission of DSC messages and prioritized wait . 14
6.2.3 Alarms . 14
6.3 Standby . 14
6.4 Sending distress automated procedure . 15
6.4.1 Procedure . 15
6.4.2 Tasks . 17
6.4.3 Display . 17
6.4.3.0 General Display Requirements . 17
6.4.3.1 Examples of sending distress procedure displays on handheld VHF equipment . 18
6.4.4 Dedicated distress button sub procedure . 18
6.4.5 Transmission of the alert attempt . 19
6.4.6 Updating position . 19
6.4.7 Handling received DSC Messages . 19
6.4.8 Alarms . 20
6.4.9 Determining Subsequent communications . 20
6.4.10 Automated tuning . 20
6.4.11 Cancelling the Distress Alert . 20
6.4.11.0 General Requirements . 20
6.4.11.1 Examples of cancel-distress displays on VHF equipment. 20
6.4.12 Acknowledgements . 21
6.4.13 Termination. 21
6.4.14 Warnings . 21
ETSI

---------------------- Page: 3 ----------------------
4 ETSI EN 300 338-5 V1.3.1 (2020-06)
6.5 Receiving distress automated procedure . 21
6.5.1 Procedure . 21
6.5.2 Tasks . 22
6.5.3 Display . 23
6.5.3.0 General Display Requirements . 23
6.5.3.1 Examples of received distress procedure displays on VHF equipment . 23
6.5.4 Handling received DSC Messages . 24
6.5.5 Alarms . 24
6.5.6 Determining Subsequent communications . 24
6.5.7 Automated tuning . 24
6.5.8 Acknowledgements . 25
6.5.9 Termination. 25
6.5.10 Warnings . 25
6.6 Sending non-distress automated procedure . 25
6.6.1 Procedure . 25
6.6.2 Tasks . 26
6.6.3 Display . 27
6.6.3.0 General Display Requirements . 27
6.6.3.1 Examples of sending non-distress procedures displays on VHF equipment . 28
6.6.4 Handling received DSC Messages . 28
6.6.5 Alarms . 28
6.6.6 Automated tuning . 28
6.6.7 Delayed Acknowledgements . 29
6.6.8 Termination. 29
6.6.9 Warnings . 29
6.7 Receiving non-distress automated procedure . 29
6.7.1 Procedure . 29
6.7.2 Tasks . 30
6.7.3 Display . 31
6.7.3.0 General Display Requirements . 31
6.7.3.1 Examples of receiving non-distress procedures displays on VHF equipment . 32
6.7.4 Handling received DSC messages . 32
6.7.5 Alarms . 32
6.7.6 Automated tuning . 32
6.7.7 Acknowledgements . 33
6.7.8 Termination. 33
6.7.9 Warnings . 33
6.8 Communications automated procedure . 33
6.8.1 Procedure . 33
6.8.2 Tasks . 34
6.8.3 Display . 34
6.8.4 Handling received DSC Messages . 34
6.8.5 Tuning of the receiver and transmitter . 34
6.8.6 Termination. 34
6.9 Handling incoming calls while the equipment is engaged . 34
6.9.1 Procedure . 34
6.9.2 Tasks . 35
6.9.2.0 General . 35
6.9.2.1 Higher priority calls . 35
6.9.2.1.0 General . 35
6.9.2.1.1 Higher priority calls - acceptance . 35
6.9.2.1.2 Higher priority calls - non acceptance . 35
6.9.2.2 Other calls . 36
6.9.2.3 Termination of automated procedures . 36
6.9.2.4 Action after termination of an automated procedure . 36
6.9.2.5 Putting automated procedures on hold (optional) . 36
6.9.2.6 Controlling non-terminated automated procedures (optional) . 36
Annex A (informative): DSC message composition . 38
A.1 Default values . 38
ETSI

---------------------- Page: 4 ----------------------
5 ETSI EN 300 338-5 V1.3.1 (2020-06)
Annex B (normative): Automated non-distress channel selection algorithm . 39
Annex C (normative): Alarms . 40
C.1 Alarm specifications . 40
C.2 Alarming with critical errors . 41
C.3 Default alarm sounds . 41
C.4 Recommended alarm sounds . 41
History . 43

ETSI

---------------------- Page: 5 ----------------------
6 ETSI EN 300 338-5 V1.3.1 (2020-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and
Radio spectrum Matters (ERM).
The present document is part 5 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.2].

National transposition dates
Date of adoption of this EN: 29 May 2020
Date of latest announcement of this EN (doa): 31 August 2020
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2021
Date of withdrawal of any conflicting National Standard (dow): 28 February 2022

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

---------------------- Page: 6 ----------------------
7 ETSI EN 300 338-5 V1.3.1 (2020-06)
1 Scope
The present document states the minimum requirements for general communication for handheld VHF radios using the
handheld class H DSC for shipborne use.
Class H DSC may be used in the Very High Frequency (VHF) Maritime Mobile Service (MMS), for distress, urgency
and safety communication and general communications using telephony for subsequent communications.
The present document is part 5 of a multi-part deliverable that covers the requirements to be fulfilled by equipment that
is integrated with a handheld transceiver.
These requirements include the relevant provisions and the guidelines of the IMO as detailed in MSC/Circ.803 [i.1] for
non-SOLAS vessels participating in the GMDSS.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ITU Radio Regulations (2016).
[2] Recommendation ITU-R M.493-15 (01/2019): "Digital selective-calling system for use in the
maritime mobile service".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] IMO Circular MSC/Circ.803: "Participation of non-SOLAS ships in the Global Maritime Distress
and Safety System (GMDSS)".
[i.2] ETSI EN 300 338-1: "Technical characteristics and methods of measurement for equipment for
generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,
MF/HF and/or VHF mobile service; Part 1: Common requirements".
[i.3] Recommendation ITU-R M.493: "Digital selective-calling system for use in the maritime mobile
service".
ETSI

---------------------- Page: 7 ----------------------
8 ETSI EN 300 338-5 V1.3.1 (2020-06)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
acknowledged: automated procedure which indicates that the objective of the initial DSC message has been achieved
active: automated procedure which has control of the receiver and transmitter and is thus able to engage in subsequent
communications and receive DSC messages
automated procedure: set of actions necessary to complete the objective of an initiating DSC message or non DSC
communication event
NOTE 1: Four DSC automated procedures are designed to process these. They are the receiving of distress DSC
messages, the receiving of non-distress DSC messages, the sending of distress DSC alert attempts and the
sending of non-distress DSC messages. In addition a fifth procedure is designed to handle non DSC
communication events.
NOTE 2: These automated procedures are called:
 Received distress automated procedure.
 Sending distress automated procedure.
 Received non-distress automated procedure.
 Sending non-distress automated procedure.
 Communications automated procedure.
class H: handheld class intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as
routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF
installations
NOTE: For handheld Class H VHF a reduced functionality is permitted compared to a fixed VHF class D.
critical errors: set of information characters obtained from one or more received DSC messages is considered to have
critical errors if the automated procedure needs information characters from that set in order to proceed or perform any
task, but the required information characters are in error
EXAMPLE: An acknowledgement cannot be composed to an individual DSC message that has errors in the
sender's MMSI.
default: value selected or an action taken by the equipment software in the absence of any operator input
distress alert: name given to the single distress DSC message with the format symbol 112
distress alert attempt: set of distress alerts sent by a vessel when in distress
NOTE: A distress alert DSC message by itself is never intentionally sent by a vessel in distress. For example, the
single frequency distress alert attempt consists of five consecutive distress alerts with no break in between
each distress alert.
distress DSC message: DSC message or acknowledgement containing the distress information
distress event: unique distress situation identified by two parameters of the distress information; the MMSI of the
vessel in distress and the nature of distress
distress information: symbols within a DSC message describing a distress situation consisting of the MMSI of the
vessel in distress, the nature of distress, the position of the vessel in distress, the UTC time of that position and the mode
of subsequent communication
engaged: equipment that is busy handling an aut
...

Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)






EUROPEAN STANDARD
Technical characteristics and methods of measurement
for equipment for generation, transmission
and reception of Digital Selective Calling (DSC)
in the maritime MF, MF/HF and/or VHF mobile service;
Part 5: Handheld VHF Class H DSC

---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)



Reference
REN/ERM-TGMAR-603
Keywords
DSC, GMDSS, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Controls and Indicators in handheld Class H DSC Equipment . 10
4.1 Visual indication . 10
4.1.0 General . 10
4.1.1 Primary DSC alphanumeric display . 10
4.1.1.0 General Requirements . 10
4.1.1.1 Additional display information . 10
4.1.2 Handling visual information . 11
5 Technical requirements . 11
5.1 Facilities for DSC transmission and reception . 11
5.1.1 GNSS receiver . 11
5.1.2 CH:70 receiver . 11
5.2 Facilities for coding and decoding of DSC . 11
5.2.1 Call functions . 11
5.2.2 INDIVIDUAL calls . 11
5.2.3 ALL SHIPS calls . 12
5.2.4 DSC call functionality . 12
6 Automated and Non-Automated Procedure Requirements in handheld Class H DSC Equipment . 12
6.1 Introduction . 12
6.2 Non-automated features . 13
6.2.1 DSC Message Composition . 13
6.2.2 Transmission of DSC messages and prioritized wait . 14
6.2.3 Alarms . 14
6.3 Standby . 14
6.4 Sending distress automated procedure . 15
6.4.1 Procedure . 15
6.4.2 Tasks . 16
6.4.3 Display . 17
6.4.3.0 General Display Requirements . 17
6.4.3.1 Examples of sending distress procedure displays on handheld VHF equipment . 18
6.4.4 Dedicated distress button sub procedure . 18
6.4.5 Transmission of the alert attempt . 19
6.4.6 Updating position . 19
6.4.7 Handling received DSC Messages . 19
6.4.8 Alarms . 19
6.4.9 Determining Subsequent communications . 20
6.4.10 Automated tuning . 20
6.4.11 Cancelling the Distress Alert . 20
6.4.11.0 General Requirements . 20
6.4.11.1 Examples of cancel-distress displays on VHF equipment. 20
6.4.12 Acknowledgements . 21
6.4.13 Termination. 21
6.4.14 Warnings . 21
ETSI

---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)
6.5 Receiving distress automated procedure . 21
6.5.1 Procedure . 21
6.5.2 Tasks . 22
6.5.3 Display . 23
6.5.3.0 General Display Requirements . 23
6.5.3.1 Examples of received distress procedure displays on VHF equipment . 23
6.5.4 Handling received DSC Messages . 24
6.5.5 Alarms . 24
6.5.6 Determining Subsequent communications . 24
6.5.7 Automated tuning . 24
6.5.8 Acknowledgements . 25
6.5.9 Termination. 25
6.5.10 Warnings . 25
6.6 Sending non-distress automated procedure . 25
6.6.1 Procedure . 25
6.6.2 Tasks . 26
6.6.3 Display . 27
6.6.3.0 General Display Requirements . 27
6.6.3.1 Examples of sending non-distress procedures displays on VHF equipment . 28
6.6.4 Handling received DSC Messages . 28
6.6.5 Alarms . 28
6.6.6 Automated tuning . 28
6.6.7 Delayed Acknowledgements . 29
6.6.8 Termination. 29
6.6.9 Warnings . 29
6.7 Receiving non-distress automated procedure . 29
6.7.1 Procedure . 29
6.7.2 Tasks . 30
6.7.3 Display . 31
6.7.3.0 General Display Requirements . 31
6.7.3.1 Examples of receiving non-distress procedures displays on VHF equipment . 32
6.7.4 Handling received DSC messages . 32
6.7.5 Alarms . 32
6.7.6 Automated tuning . 32
6.7.7 Acknowledgements . 33
6.7.8 Termination. 33
6.7.9 Warnings . 33
6.8 Communications automated procedure . 34
6.8.1 Procedure . 34
6.8.2 Tasks . 34
6.8.3 Display . 34
6.8.4 Handling received DSC Messages . 34
6.8.5 Tuning of the receiver and transmitter . 34
6.8.6 Termination. 34
6.9 Handling incoming calls while the equipment is engaged . 35
6.9.1 Procedure . 35
6.9.2 Tasks . 35
6.9.2.0 General . 35
6.9.2.1 Higher priority calls . 35
6.9.2.1.0 General . 35
6.9.2.1.1 Higher priority calls - acceptance . 35
6.9.2.1.2 Higher priority calls - non acceptance . 36
6.9.2.2 Other calls . 36
6.9.2.3 Termination of automated procedures . 36
6.9.2.4 Action after termination of an automated procedure . 36
6.9.2.5 Putting automated procedures on hold (optional) . 36
6.9.2.6 Controlling non-terminated automated procedures (optional) . 36
Annex A (informative): DSC message composition . 38
A.1 Default values . 38
ETSI

---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)
Annex B (normative): Automated non-distress channel selection algorithm . 39
Annex C (normative): Alarms . 40
C.1 Alarm specifications . 40
C.2 Alarming with critical errors . 41
C.3 Default alarm sounds . 41
C.4 Recommended alarm sounds . 41
History . 43

ETSI

---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This final draft European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the ETSI standards EN
Approval Procedure.
The present document is part 5 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.2].

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)
1 Scope
The present document states the minimum requirements for general communication for handheld VHF radios using the
handheld class H DSC for shipborne use.
Class H DSC may be used in the Very High Frequency (VHF) Maritime Mobile Service (MMS), for distress, urgency
and safety communication and general communications using telephony for subsequent communications.
The present document is part 5 of a multi-part deliverable that covers the requirements to be fulfilled by equipment that
is integrated with a handheld transceiver.
These requirements include the relevant provisions and the guidelines of the IMO as detailed in MSC/Circ.803 [i.1] for
non-SOLAS vessels participating in the GMDSS.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ITU Radio Regulations (2016).
[2] Recommendation ITU-R M.493-15 (01/2019): "Digital selective-calling system for use in the
maritime mobile service".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] IMO Circular MSC/Circ-803: "Participation of non-SOLAS ships in the Global Maritime Distress
and Safety System (GMDSS)".
[i.2] ETSI EN 300 338-1: "Technical characteristics and methods of measurement for equipment for
generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,
MF/HF and/or VHF mobile service; Part 1: Common requirements".
[i.3] Recommendation ITU-R M.493: "Digital selective-calling system for use in the maritime mobile
service".
ETSI

---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 300 338-5 V1.3.1 (2020-03)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
acknowledged: automated procedure which indicates that the objective of the initial DSC message has been achieved
active: automated procedure which has control of the receiver and transmitter and is thus able to engage in subsequent
communications and receive DSC messages
automated procedure: set of actions necessary to complete the objective of an initiating DSC message or non DSC
communication event
NOTE 1: Four DSC automated procedures are designed to process these. They are the receiving of distress DSC
messages, the receiving of non-distress DSC messages, the sending of distress DSC alert attempts and the
sending of non-distress DSC messages. In addition a fifth procedure is designed to handle non DSC
communication events.
NOTE 2: These automated procedures are called:
 Received distress automated procedure.
 Sending distress automated procedure.
 Received non-distress automated procedure.
 Sending non-distress automated procedure.
 Communications automated procedure.
class H: handheld class intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as
routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF
installations
NOTE: For handheld Class H VHF a reduced functionality is permitted compared to a fixed VHF class D.
critical errors: set of information characters obtained from one or more received DSC messages is considered to have
critical errors if the automated procedure needs information characters from that set in order to proceed or perform any
task, but the required information characters are in error
EXAMPLE: An acknowledgement cannot be composed to an individual DSC message that has errors in the
sender's MMSI.
default: value selected or an action taken by the equipment software in the absence of any operator input
distress alert: name given to the single distress DSC message with the format symbol 112
distress alert attempt: set of distress alerts sent by a vessel when in distress
NOTE: A distress alert DSC message by itself is never intentionally sent by a vessel in distress. For example, the
single frequency distress alert attempt consists of five consecutive distress alerts with no break in between
each distress alert.
distress DSC message: DSC message or acknowledgement containing the distress information
distress event: unique distress situation identified by two parameters of the distress information; the MMSI of the
vessel in distress and the nature of distress
distress information: symbols within a DSC message describing a distress situation consisting of the MMSI of the
vessel in distress,
...

Draft ETSI EN 300 338-5 V1.3.0 (2019-10)






EUROPEAN STANDARD
Technical characteristics and methods of measurement
for equipment for generation, transmission
and reception of Digital Selective Calling (DSC)
in the maritime MF, MF/HF and/or VHF mobile service;
Part 5: Handheld VHF Class H DSC

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)



Reference
REN/ERM-TGMAR-603
Keywords
DSC, GMDSS, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Controls and Indicators in handheld Class H DSC Equipment . 10
4.1 Visual indication . 10
4.1.0 General . 10
4.1.1 Primary DSC alphanumeric display . 10
4.1.1.0 General Requirements . 10
4.1.1.1 Additional display information . 10
4.1.2 Handling visual information . 11
5 Technical requirements . 11
5.1 Facilities for DSC transmission and reception . 11
5.1.1 GNSS receiver . 11
5.1.2 CH:70 receiver . 11
5.2 Facilities for coding and decoding of DSC . 11
5.2.1 Call functions . 11
5.2.2 INDIVIDUAL calls . 11
5.2.3 ALL SHIPS calls . 12
5.2.4 DSC call functionality . 12
6 Automated and Non-Automated Procedure Requirements in handheld Class H DSC Equipment . 12
6.1 Introduction . 12
6.2 Non-automated features . 13
6.2.1 DSC Message Composition . 13
6.2.2 Transmission of DSC messages and prioritized wait . 14
6.2.3 Alarms . 14
6.3 Standby . 14
6.4 Sending distress automated procedure . 15
6.4.1 Procedure . 15
6.4.2 Tasks . 16
6.4.3 Display . 17
6.4.3.0 General Display Requirements . 17
6.4.3.1 Examples of sending distress procedure displays on handheld VHF equipment . 18
6.4.4 Dedicated distress button sub procedure . 18
6.4.5 Transmission of the alert attempt . 19
6.4.6 Updating position . 19
6.4.7 Handling received DSC Messages . 19
6.4.8 Alarms . 19
6.4.9 Determining Subsequent communications . 20
6.4.10 Automated tuning . 20
6.4.11 Cancelling the Distress Alert . 20
6.4.11.0 General Requirements . 20
6.4.11.1 Examples of cancel-distress displays on VHF equipment. 20
6.4.12 Acknowledgements . 21
6.4.13 Termination. 21
6.4.14 Warnings . 21
ETSI

---------------------- Page: 3 ----------------------
4 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
6.5 Receiving distress automated procedure . 21
6.5.1 Procedure . 21
6.5.2 Tasks . 22
6.5.3 Display . 23
6.5.3.0 General Display Requirements . 23
6.5.3.1 Examples of received distress procedure displays on VHF equipment . 23
6.5.4 Handling received DSC Messages . 24
6.5.5 Alarms . 24
6.5.6 Determining Subsequent communications . 24
6.5.7 Automated tuning . 24
6.5.8 Acknowledgements . 25
6.5.9 Termination. 25
6.5.10 Warnings . 25
6.6 Sending non-distress automated procedure . 25
6.6.1 Procedure . 25
6.6.2 Tasks . 26
6.6.3 Display . 27
6.6.3.0 General Display Requirements . 27
6.6.3.1 Examples of sending non-distress procedures displays on VHF equipment . 28
6.6.4 Handling received DSC Messages . 28
6.6.5 Alarms . 28
6.6.6 Automated tuning . 28
6.6.7 Delayed Acknowledgements . 29
6.6.8 Termination. 29
6.6.9 Warnings . 29
6.7 Receiving non-distress automated procedure . 29
6.7.1 Procedure . 29
6.7.2 Tasks . 30
6.7.3 Display . 31
6.7.3.0 General Display Requirements . 31
6.7.3.1 Examples of receiving non-distress procedures displays on VHF equipment . 32
6.7.4 Handling received DSC messages . 32
6.7.5 Alarms . 32
6.7.6 Automated tuning . 32
6.7.7 Acknowledgements . 33
6.7.8 Termination. 33
6.7.9 Warnings . 33
6.8 Communications automated procedure . 34
6.8.1 Procedure . 34
6.8.2 Tasks . 34
6.8.3 Display . 34
6.8.4 Handling received DSC Messages . 34
6.8.5 Tuning of the receiver and transmitter . 34
6.8.6 Termination. 34
6.9 Handling incoming calls while the equipment is engaged . 35
6.9.1 Procedure . 35
6.9.2 Tasks . 35
6.9.2.0 General . 35
6.9.2.1 Higher priority calls . 35
6.9.2.1.0 General . 35
6.9.2.1.1 Higher priority calls - acceptance . 35
6.9.2.1.2 Higher priority calls - non acceptance . 36
6.9.2.2 Other calls . 36
6.9.2.3 Termination of automated procedures . 36
6.9.2.4 Action after termination of an automated procedure . 36
6.9.2.5 Putting automated procedures on hold (optional) . 36
6.9.2.6 Controlling non-terminated automated procedures (optional) . 36
Annex A (informative): DSC message composition . 38
A.1 Default values . 38
ETSI

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5 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
Annex B (normative): Automated non-distress channel selection algorithm . 39
Annex C (normative): Alarms . 40
C.1 Alarm specifications . 40
C.2 Alarming with critical errors . 41
C.3 Default alarm sounds . 41
C.4 Recommended alarm sounds . 42
History . 43

ETSI

---------------------- Page: 5 ----------------------
6 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility
and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote phase of the ETSI
standards EN Approval Procedure.
The present document is part 5 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.2].

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

---------------------- Page: 6 ----------------------
7 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
1 Scope
The present document states the minimum requirements for general communication for handheld VHF radios using the
handheld class H DSC for shipborne use.
Class H DSC may be used in the Very High Frequency (VHF) Maritime Mobile Service (MMS), for distress, urgency
and safety communication and general communications using telephony for subsequent communications.
The present document is part 5 of a multi-part deliverable that covers the requirements to be fulfilled by equipment that
is integrated with a handheld transceiver.
These requirements include the relevant provisions and the guidelines of the IMO as detailed in MSC/Circ.803 [i.1] for
non-SOLAS vessels participating in the GMDSS.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ITU Radio Regulations (2016).
[2] Recommendation ITU-R M.493-15 (01/2019): "Digital selective-calling system for use in the
maritime mobile service".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] IMO Circular MSC/Circ-803: "Participation of non-SOLAS ships in the Global Maritime Distress
and Safety System (GMDSS)".
[i.2] ETSI EN 300 338-1: "Technical characteristics and methods of measurement for equipment for
generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,
MF/HF and/or VHF mobile service; Part 1: Common requirements".
ETSI

---------------------- Page: 7 ----------------------
8 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
acknowledged: automated procedure which indicates that the objective of the initial DSC message has been achieved
active: automated procedure which has control of the receiver and transmitter and is thus able to engage in subsequent
communications and receive DSC messages
automated procedure: set of actions necessary to complete the objective of an initiating DSC message or non DSC
communication event
NOTE 1: Four DSC automated procedures are designed to process these. They are the receiving of distress DSC
messages, the receiving of non-distress DSC messages, the sending of distress DSC alert attempts and the
sending of non-distress DSC messages. In addition a fifth procedure is designed to handle non DSC
communication events.
NOTE 2: These automated procedures are called:
 Received distress automated procedure.
 Sending distress automated procedure.
 Received non-distress automated procedure.
 Sending non-distress automated procedure.
 Communications automated procedure.
class H: handheld class intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as
routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF
installations
NOTE: For handheld Class H VHF a reduced functionality is permitted compared to a fixed VHF class D.
critical errors: set of information characters obtained from one or more received DSC messages is considered to have
critical errors if the automated procedure needs information characters from that set in order to proceed or perform any
task, but the required information characters are in error
EXAMPLE: An acknowledgement cannot be composed to an individual DSC message that has errors in the
sender's MMSI.
default: value selected or an action taken by the equipment software in the absence of any operator input
distress alert: name given to the single distress DSC message with the format symbol 112
distress alert attempt: set of distress alerts sent by a vessel when in distress
NOTE: A distress alert DSC message by itself is never intentionally sent by a vessel in distress. For example, the
single frequency distress alert attempt consists of five consecutive distress alerts with no break in between
each distress alert.
distress DSC message: DSC message or acknowledgement containing the distress information
distress event: unique distress situation identified by two parameters of the distress information; the MMSI of the
vessel in distress and the nature of distress
distress information: symbols within a DSC message describing a distress situation consisting of the MMSI of the
vessel in distress, the nature of distress, the position of the vessel in distress, the UTC time of that position and the mode
of subsequent communication
engaged
...

SLOVENSKI STANDARD
oSIST prEN 300 338-5 V1.3.0:2019
01-december-2019
Tehnične karakteristike in merilne metode za naprave, ki generirajo, oddajajo in
sprejemajo digitalni selektivni klic (DSC) v pomorski mobilni storitvi, ki deluje v
območju MF, MF/HF oziroma VHF - 5. del: Ročne postaje VHF z digitalnim
selektivnim klicem razreda H
Technical characteristics and methods of measurement for equipment for generation,
transmission and reception of Digital Selective Calling (DSC) in the maritime MF, MF/HF
and/or VHF mobile service - Part 5: Handheld VHF Class H DSC
Ta slovenski standard je istoveten z: ETSI EN 300 338-5 V1.3.0 (2019-10)
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
oSIST prEN 300 338-5 V1.3.0:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 300 338-5 V1.3.0:2019

---------------------- Page: 2 ----------------------
oSIST prEN 300 338-5 V1.3.0:2019
Draft ETSI EN 300 338-5 V1.3.0 (2019-10)






EUROPEAN STANDARD
Technical characteristics and methods of measurement
for equipment for generation, transmission
and reception of Digital Selective Calling (DSC)
in the maritime MF, MF/HF and/or VHF mobile service;
Part 5: Handheld VHF Class H DSC

---------------------- Page: 3 ----------------------
oSIST prEN 300 338-5 V1.3.0:2019

2 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)



Reference
REN/ERM-TGMAR-603
Keywords
DSC, GMDSS, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 4 ----------------------
oSIST prEN 300 338-5 V1.3.0:2019

3 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Controls and Indicators in handheld Class H DSC Equipment . 10
4.1 Visual indication . 10
4.1.0 General . 10
4.1.1 Primary DSC alphanumeric display . 10
4.1.1.0 General Requirements . 10
4.1.1.1 Additional display information . 10
4.1.2 Handling visual information . 11
5 Technical requirements . 11
5.1 Facilities for DSC transmission and reception . 11
5.1.1 GNSS receiver . 11
5.1.2 CH:70 receiver . 11
5.2 Facilities for coding and decoding of DSC . 11
5.2.1 Call functions . 11
5.2.2 INDIVIDUAL calls . 11
5.2.3 ALL SHIPS calls . 12
5.2.4 DSC call functionality . 12
6 Automated and Non-Automated Procedure Requirements in handheld Class H DSC Equipment . 12
6.1 Introduction . 12
6.2 Non-automated features . 13
6.2.1 DSC Message Composition . 13
6.2.2 Transmission of DSC messages and prioritized wait . 14
6.2.3 Alarms . 14
6.3 Standby . 14
6.4 Sending distress automated procedure . 15
6.4.1 Procedure . 15
6.4.2 Tasks . 16
6.4.3 Display . 17
6.4.3.0 General Display Requirements . 17
6.4.3.1 Examples of sending distress procedure displays on handheld VHF equipment . 18
6.4.4 Dedicated distress button sub procedure . 18
6.4.5 Transmission of the alert attempt . 19
6.4.6 Updating position . 19
6.4.7 Handling received DSC Messages . 19
6.4.8 Alarms . 19
6.4.9 Determining Subsequent communications . 20
6.4.10 Automated tuning . 20
6.4.11 Cancelling the Distress Alert . 20
6.4.11.0 General Requirements . 20
6.4.11.1 Examples of cancel-distress displays on VHF equipment. 20
6.4.12 Acknowledgements . 21
6.4.13 Termination. 21
6.4.14 Warnings . 21
ETSI

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oSIST prEN 300 338-5 V1.3.0:2019

4 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
6.5 Receiving distress automated procedure . 21
6.5.1 Procedure . 21
6.5.2 Tasks . 22
6.5.3 Display . 23
6.5.3.0 General Display Requirements . 23
6.5.3.1 Examples of received distress procedure displays on VHF equipment . 23
6.5.4 Handling received DSC Messages . 24
6.5.5 Alarms . 24
6.5.6 Determining Subsequent communications . 24
6.5.7 Automated tuning . 24
6.5.8 Acknowledgements . 25
6.5.9 Termination. 25
6.5.10 Warnings . 25
6.6 Sending non-distress automated procedure . 25
6.6.1 Procedure . 25
6.6.2 Tasks . 26
6.6.3 Display . 27
6.6.3.0 General Display Requirements . 27
6.6.3.1 Examples of sending non-distress procedures displays on VHF equipment . 28
6.6.4 Handling received DSC Messages . 28
6.6.5 Alarms . 28
6.6.6 Automated tuning . 28
6.6.7 Delayed Acknowledgements . 29
6.6.8 Termination. 29
6.6.9 Warnings . 29
6.7 Receiving non-distress automated procedure . 29
6.7.1 Procedure . 29
6.7.2 Tasks . 30
6.7.3 Display . 31
6.7.3.0 General Display Requirements . 31
6.7.3.1 Examples of receiving non-distress procedures displays on VHF equipment . 32
6.7.4 Handling received DSC messages . 32
6.7.5 Alarms . 32
6.7.6 Automated tuning . 32
6.7.7 Acknowledgements . 33
6.7.8 Termination. 33
6.7.9 Warnings . 33
6.8 Communications automated procedure . 34
6.8.1 Procedure . 34
6.8.2 Tasks . 34
6.8.3 Display . 34
6.8.4 Handling received DSC Messages . 34
6.8.5 Tuning of the receiver and transmitter . 34
6.8.6 Termination. 34
6.9 Handling incoming calls while the equipment is engaged . 35
6.9.1 Procedure . 35
6.9.2 Tasks . 35
6.9.2.0 General . 35
6.9.2.1 Higher priority calls . 35
6.9.2.1.0 General . 35
6.9.2.1.1 Higher priority calls - acceptance . 35
6.9.2.1.2 Higher priority calls - non acceptance . 36
6.9.2.2 Other calls . 36
6.9.2.3 Termination of automated procedures . 36
6.9.2.4 Action after termination of an automated procedure . 36
6.9.2.5 Putting automated procedures on hold (optional) . 36
6.9.2.6 Controlling non-terminated automated procedures (optional) . 36
Annex A (informative): DSC message composition . 38
A.1 Default values . 38
ETSI

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oSIST prEN 300 338-5 V1.3.0:2019

5 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
Annex B (normative): Automated non-distress channel selection algorithm . 39
Annex C (normative): Alarms . 40
C.1 Alarm specifications . 40
C.2 Alarming with critical errors . 41
C.3 Default alarm sounds . 41
C.4 Recommended alarm sounds . 42
History . 43

ETSI

---------------------- Page: 7 ----------------------
oSIST prEN 300 338-5 V1.3.0:2019

6 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility
and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote phase of the ETSI
standards EN Approval Procedure.
The present document is part 5 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.2].

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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7 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
1 Scope
The present document states the minimum requirements for general communication for handheld VHF radios using the
handheld class H DSC for shipborne use.
Class H DSC may be used in the Very High Frequency (VHF) Maritime Mobile Service (MMS), for distress, urgency
and safety communication and general communications using telephony for subsequent communications.
The present document is part 5 of a multi-part deliverable that covers the requirements to be fulfilled by equipment that
is integrated with a handheld transceiver.
These requirements include the relevant provisions and the guidelines of the IMO as detailed in MSC/Circ.803 [i.1] for
non-SOLAS vessels participating in the GMDSS.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ITU Radio Regulations (2016).
[2] Recommendation ITU-R M.493-15 (01/2019): "Digital selective-calling system for use in the
maritime mobile service".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] IMO Circular MSC/Circ-803: "Participation of non-SOLAS ships in the Global Maritime Distress
and Safety System (GMDSS)".
[i.2] ETSI EN 300 338-1: "Technical characteristics and methods of measurement for equipment for
generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,
MF/HF and/or VHF mobile service; Part 1: Common requirements".
ETSI

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8 Draft ETSI EN 300 338-5 V1.3.0 (2019-10)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
acknowledged: automated procedure which indicates that the objective of the initial DSC message has been achieved
active: automated procedure which has control of the receiver and transmitter and is thus able to engage in subsequent
communications and receive DSC messages
automated procedure: set of actions necessary to complete the objective of an initiating DSC message or non DSC
communication event
NOTE 1: Four DSC automated procedures are designed to process these. They are the receiving of distress DSC
messages, the receiving of non-distress DSC messages, the sending of distress DSC alert attempts and the
sending of non-distress DSC messages. In addition a fifth procedure is designed to handle non DSC
communication events.
NOTE 2: These automated procedures are called:
 Received distress automated procedure.
 Sending distress automated procedure.
 Received non-distress automated procedure.
 Sending non-distress automated procedure.
 Communications automated procedure.
class H: handheld class intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as
routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF
installations
NOTE: For handheld Class H VHF a reduced functionality is permitted compared to a fixed VHF class D.
critical errors: set of information characters obtained from one or more received DSC messages is
...