EN 17240:2024/prA1

SLOVENSKI STANDARD
01-december-2025
Inteligentni transportni sistemi - e-Varnost - Preskušanje skladnosti e-klica v zvezi
pošiljatelj-prejemnik za paketno preklopne sisteme IMS - Dopolnilo A1
Intelligent transport systems - ESafety - ECall end to end conformance testing for IMS
packet switched based systems
Intelligente Verkehrssysteme - eSicherheit - eCall-Ende-zu-Ende Konformitätsprüfungen
für IMS-paketvermittelte Systeme
Systèmes de transport intelligents - ESafety - Essais de conformité du système eCall de
bout en bout pour les systèmes IMS basés sur la commutation de paquets
Ta slovenski standard je istoveten z: EN 17240:2024/prA1
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 17240:2024
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
October 2025
ICS 35.240.60
English Version
Intelligent transport systems - ESafety - ECall end to end
conformance testing for IMS packet switched based
systems
Systèmes de transport intelligents - ESafety - Essais de Intelligente Verkehrssysteme - eSicherheit - eCall-
conformité du système eCall de bout en bout pour les Ende-zu-Ende Konformitätsprüfungen für IMS-
systèmes IMS basés sur la commutation de paquets paketvermittelte Systeme
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 278.

This draft amendment A1, if approved, will modify the European Standard EN 17240:2024. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
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 supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17240:2024/prA1:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Modification to Clause 2, “Normative references” . 5
2 Modifications to Clause 4, “Symbols and abbreviations”. 5
3 Modifications to subclause 7.1, "Layout and procedures" . 5
4 Modification to 8.1.2, "Classification of testing" . 5
5 Modification to 8.3, "IMS-eCall timers" . 5
6 Modifications to 9.4.2, "CTP 1.1.0.1 Conformance to ETSI TS 136 523, ETSI TS 138 523 and
ETSI TS 134 229 - IVS" . 5
7 Modifications to 9.4.17, "CTP 1.1.5.3.2 Manual termination of eCall by vehicle occupants
allowed (manually triggered eCall) - IVS" . 6
8 Modification to 9.4.20, "CTP 1.1.5.6 Priority over conflicting communication - IVS" . 6
9 Modification to 9.4.26, "CTP 1.1.10.2 Redial attempt completed within 2 min after eCall is
dropped - IVS" . 7
10 Modification to 9.4.27, "CTP 1.1.10.5 Test eCall is not attempted in limited service condition
- IVS". 8
11 Modifications to 9.4.28, "CTP 1.1.10.6 Remain registered after eCall is rejected and MSD
acknowledged - IVS". 8
12 Modifications to 9.4.29, "CTP 1.1.10.7 Redial after eCall is rejected and negative AL-ACK -
IVS" . 9
13 Modifications to 9.4.30, "CTP 1.1.10.8 Redial after eCall is rejected and missing AL-ACK -
IVS" . 9
14 Modifications to 9.4.31, "CTP 1.1.10.9 Redial after eCall is not answered - IVS" . 10
15 Modifications to 9.4.32, "CTP 1.1.10.10 Negative AL-ACK for initial MSD - IVS" . 11
16 Modifications to 9.4.33, "CTP 1.1.10.11 Missing AL-ACK for initial MSD - IVS" . 11
17 Modification to 9.4.34, "CTP 1.1.10.12 IMS emergency call is attempted when no networks
with set IMS eCall support indicator are available - IVS" . 11
18 Modification to 9.4.35, "CTP 1.1.10.13 eCall is attempted when no networks with set IMS
eCall support indicator are available - IVS" . 12
19 Modification to 9.4.36, "CTP 1.1.10.14 IVS logs if initial MSD is not acknowledged - IVS" . 12
20 Modification to 9.4.38, "CTP 1.1.12.1 Send MSD to indicate manual eCall activation - IVS" . 12
21 Modification to 9.4.39, "CTP 1.1.13.1 Send MSD to indicate test Call activation - IVS" . 12
22 Modifications to 9.4.42, "CTP 1.1.15.3 New/updated MSD while eCall conversation in
progress after negative AL-ACK for initial MSD - IVS" . 12
23 Modification to 9.4.43, "CTP 1.1.15.4 New/updated MSD while eCall conversation in
progress after negative AL-ACK for initial MSD and MSD transfer via in-band modem - IVS"
............................................................................................................................................................................. 13
24 Modifications to 9.4.44, "CTP 1.1.15.5 New/updated MSD while eCall conversation in
progress after missing AL-ACK for initial MSD - IVS" . 13
25 Modification to 9.4.45, "CTP 1.1.15.6 New/updated MSD while eCall conversation in
progress after missing AL-ACK for initial MSD and MSD transfer via in-band modem - IVS"
............................................................................................................................................................................. 13
26 Modification to 9.4.49, "CTP 1.1.17.2 Call-back answered by IVS in the event of abnormal
termination - IVS" . 14
27 Modification to 9.4.52, "CTP 1.1.17.6 No redial attempt in the event of abnormal
termination after MSD ACK - IVS" . 15
28 Modification to 9.4.53, "CTP 1.1.17.7 Capacity of backup battery - IVS" . 15
29 Modification to 9.4.55, "CTP 1.1.18.2 MSD transfer using in-band modem after negative AL-
ACK - IVS" . 15
30 Modification to 9.4.56, "CTP 1.1.18.3 MSD transfer using in-band modem after missing AL-
ACK - IVS" . 16
31 Modification to 9.5.4, "CTP 1.1.17.5 Remain registered for ≥ 1 hr ≤ 12 hr - eCall-only IVS" 16
32 Modification to 10.1.2, "Default assumptions" . 16
33 Modification to 10.3.1, "Conformance requirement" . 16
34 Modification to 10.4.2, "CTP 2.0.1 Keep SIMs/USIMs/eSIMs alive even though not in regular
operation - MNO" . 16
35 Modifications to 10.4.3, "CTP 2.0.2 MNO supports general eCall relevant requirements -
MNO" . 16
36 Modifications to 10.4.21, "CTP 2.5.3 Support call-back - Roaming - MNO " . 17
37 Modification to subclause 11.4.15, "CTP 3.1.7.11 Request MSD using in-band modem -
PSAP" . 17
38 Modifications to 11.4.16, "CTP 3.1.7.12 Receive MSD using in-band modem - PSAP" . 17
39 Modification to 11.4.19, "CTP 3.1.7.15 eCall is rejected and MSD acknowledged - PSAP" . 18
40 Modifications to 11.4.29, "CTP 3.1.16 Request new/updated MSD after call clear-down -
PSAP" . 18

European foreword
This document (EN 17240:2024/prA1:2025) has been prepared by Technical Committee CEN/TC 278
“Intelligent transport systems”, the secretariat of which is held by NEN.
This document is currently submitted to the CEN Enquiry.
1 Modification to Clause 2, “Normative references”
Replace “EN 16072:2022” with “EN 16072:2025” in Clause 2 and throughout the text.
2 Modifications to Clause 4, “Symbols and abbreviations”
Delete the following:
“HLR Home Location Register”
Add the following below HPLMN:
“HSS Home Subscriber Server”
3 Modifications to subclause 7.1, "Layout and procedures"
th th th
In the 5 , 7 and 8 paragraphs, replace “EN 17184:2023” with “EN 17184:2024”.
4 Modification to 8.1.2, "Classification of testing"
th nd
In the 5 paragraph, under the 2 list item, add the following below “The MNO PLMN test point is used only
for test purposes related to IMS-eCall.”:
“The MNO test point is by default configured to set the eCall over IMS support indicator (ECL), unless
otherwise stated in the Conformance Test Procedure (CTP).”.
5 Modification to 8.3, "IMS-eCall timers"
st
In the 1 paragraph, replace “EN 17184:2023” with “EN 17184:2024”.
6 Modifications to 9.4.2, "CTP 1.1.0.1 Conformance to ETSI TS 136 523, ETSI TS
138 523 and ETSI TS 134 229 - IVS"
In Table 10, after the 7th row (Initial conditions), insert the following new row:
“
Test applicability Only the applicable tests shall be executed, based on the supported features
or technologies of the IVS and the applicability conditions as specified in the
Part 2 documents of the referred documents. All other tests shall be indicated
as not applicable.
NOTE 1: The applicability conditions for the tests in ETSI TS 134 229-1 and
ETSI TS 134 229-5 are defined in ETSI TS 134 229-2; the applicability
conditions for the tests in ETSI TS 136 523-1 are defined in ETSI TS 136 523-
2; and the applicability conditions for ETSI TS 138 523-1 are defined in ETSI
TS 138 523-2.
NOTE 2: A test is applicable only if the IVS supports the conditions for the
test in ETSI TS 134 229-1 or ETSI TS 134 229-5, supports eCall over GERAN
or UTRAN if part of the test and does not support any requirement in EN
17184:2024 that conflicts with the test. A conflict may occur due to
differences between certain requirements in EN 17184:2024 and certain
requirements in ETSI 124 229 for eCall over IMS.
”.
th th
In Table 10, 9 row (previously 8 ), under column ‘Tester action’, replace: “Perform tests at the system
level…” with “Perform applicable tests at the system level…”.
th th
In Table 10, 9 row (previously 8 ), under column ‘Tester action’, replace “ETSI TS 134 229-1 V17.7.0
(2024-07)” with “ETSI TS 134 229-1 V17.1.0 (2024-07)”.

In the NOTE after Table 10, add the following text before “ETSI TS 136 523-1”:
“applicable tests in ”.
In the same NOTE, replace “ETSI TS 138 523-1 V17.1.0 (2024-08)” with “ETSI TS 138 523-1 V17.7.0 (2024-
08)”.
7 Modifications to 9.4.17, "CTP 1.1.5.3.2 Manual termination of eCall by vehicle
occupants allowed (manually triggered eCall) - IVS"
In the clause title and in Table 25, replace “termination” with “cancellation”, and update the table of
contents accordingly.
th
In Table 25, 4 row, replace:
“Verify that, before the expiration of the timer T1, a manually initiated eCall in progress can be terminated
manually by vehicle occupants”
with:
“Verify that, before the expiration of the timer T1, a manually initiated eCall can be cancelled manually
by vehicle occupants”.
th
In Table 25, 7 row, replace:
“Manually triggered eCall is in progress, timer T1 not expired”
with:
“Manually triggered eCall with pending call initiation, timer T1 not expired”.

th
In Table 25, 8 row, under column ‘Tester action’, replace:
“Attempt to disconnect eCall using vehicle HMI, before timer T1 expiry”
with:
“Attempt to cancel eCall using vehicle HMI, before timer T1 expiry”.
8 Modification to 9.4.20, "CTP 1.1.5.6 Priority over conflicting communication -
IVS"
In Table 28, after the 7th row (Initial conditions), insert the following new row:
“
Test applicability If the IVS does not support conflicting communication sessions (e.g. regular
phone calls, added-value services, etc.) because the implementation is
limited to eCall and optional data services, then this test is not applicable;
otherwise, this test shall be applied.
”.
9 Modification to 9.4.26, "CTP 1.1.10.2 Redial attempt completed within 2 min
after eCall is dropped - IVS"
Replace Table 34 with the following:
“
Table 34
SUT reference ‘In-Vehicle System’
CTP/IVS/ECP/1.1.10.2 Redial attempt completed within 2 min after eCall is dropped

SUT test objective In case of a dropped call, prior to the MSD being acknowledged, all redial attempts
shall be completed within 2 min.
CTP origin CEN
Reference EN 17184:2024, 7.4.9 paragraph 1
requirement
EN 16072:2025, 7.17.2 paragraph 1
Initial conditions Engine control activated and IVS is in mobile network coverage
MNO and PSAP test points are available
PSAP test point is configured to return 200 OK INVITE response without AL-ACK
PSAP test point is configured to reject all call reattempts, after the initial eCall has
been answered
Test applicability If the IVS supports the call failure treatment in ETSI TS 124 229, where call failure
after receipt of a 200 OK is not required to cause a redial, then this test is not
applicable; otherwise, this test shall be applied.
Stimulus and expected behaviour
Test point Tester action Pass condition
IVS SUT 1 Initiate an automatic or manual eCall
in accordance with the
manufacturer’s instructions
IVS SUT 2 The IVS sends a SIP INVITE message, Initial MSD was sent

which contains the initial MSD
PSAP test point 3 Answer the call with a SIP 200 OK,
which does not carry an
acknowledgement (AL-ACK) for the
initial MSD
IVS SUT 4 IVS receives SIP 200 OK, which does
not carry an acknowledgement (AL-
ACK) for the MSD
MNO test point 5 Terminate the call abnormally (e.g.
by a Radiolink timeout) before the
MSD has been acknowledged and
note the time
PSAP test point 6 Monitor incoming calls for up to Recognize presence of at least one
2 min* and reject the redial IVS redial attempt
attempt(s) with a SIP response code
of the form 6xx (e.g. 600 - Busy
Everywhere or 603 - Decline) or 4xx
(e.g. 486 - Busy Here) without
positive or negative AL-ACK
PSAP test point 7 Verify that following the initial call All redial attempts are completed
being dropped prior to the MSD within 2 min*
being acknowledged, all redial
If ALL individual pass conditions
attempts are completed within
listed in this column above have
2 min* of identification that the call
been met
has been dropped
THEN CTP PASS
ELSE CTP FAIL
* A margin of 5 % is admissible.
”.
10 Modification to 9.4.27, "CTP 1.1.10.5 Test eCall is not attempted in limited
service condition - IVS"
th
In Table 35, 8 row, under column ‘Tester action’ replace:
“Monitor incoming calls (for 2 minutes*)”
with:
“Monitor incoming calls for up to 2 min*”.
11 Modifications to 9.4.28, "CTP 1.1.10.6 Remain registered after eCall is rejected
and MSD acknowledged - IVS"
th
In Table 36, 4 row, replace:
“…SIP response code of the form 6xx (e.g. 600 - Busy Everywhere)…”
with:
“…SIP response code of the form 6xx (e.g. 600 - Busy Everywhere or 603 - Decline)…”.

th th
In Table 36, 7 and 9 row, replace (4x):
“SIP 6xx or 4xx”
with:
“SIP 6xx (e.g. 600 - Busy Everywhere or 603 - Decline) or 4xx (e.g. 486 - Busy Here)”.

th nd
In Table 36, 8 row, 2 column, replace:
“If the IVS supports the part of clause 5.1.6.11.2 in ETSI TS 124 229 in Release 14 or later…”
with:
“If the IVS supports the part of subclause 5.1.6.11.2 in ETSI TS 124 229 in Release 14 to Release 18…”.
and delete “(immediately)”.
12 Modifications to 9.4.29, "CTP 1.1.10.7 Redial after eCall is rejected and
negative AL-ACK - IVS"
nd
In Table 37, 2 row, replace:
“Redial attempt after call
...