Ana Robnik, Research and Strategic Development Consultant, Iskratel, representing sAFE project, ETSI and Sintesio Foundation - Activities and Vision in support to the NG eCall transition

1. Presented by: For:
© ETSI 2020
6 October 2021
NG eCall ETSITM Plugtests
Ana Robnik
Iskratel, d.o.o., Kranj
EENA Conference

2. © ETSI 2
Scope of presentation
✓ 1st NG eCall Plugtests:
✓ Scope
✓ Setup
✓ Results and Lessons learned
✓ Next (2nd) NG eCall Plugtests:
✓ Standards revisions included in the test scope
✓ Planned scope and setup of the event
✓ Schedule (2022?)

3. © ETSI
1st NG eCall
Plugtests
Scope, Setup and Results
2-6 November 2020
supported by
European Commission, ETSI TC MSG, the sAFE 112 project, EFTA and EENA
Hosted by
Sintesio, 1st ETSI-endorsed interoperability test site
with Iskratel as technical partner

4. © ETSI 4
Scope of the 1st ETSI NG eCall Plugtests(TM)
1. Motivation:
Validating the consistency/clarity/unambiguity of current NG eCall technical standards, as well as the
readiness/complience and interoperability of early implementations of key building blocks of the NG
eCall service infrastructure, namely NG eCall IVS devices, 3G/4G mobile and IMS Telecom Cores and
NG PSAPs, that are required to deliver the NG eCall service end-to-end.
2. Scope:
End-to-end Interoperability testing based on Interoperability test specification ETSI TS 103 683 which
covers base NG eCall specifications from CEN, ETSI and IETF: CEN TS 17184:2018, ETSI TS 123 167,
ETSI TS 124 229, IETF RFC 8147, ...
3. Limitations:
Due to COVID-19 epidemic lock down and travel restrictions, the 1st NG eCall Plugtests was organized
in Q4/2020 completely in a digital format: both, IVS devices and PSAP sites were connected remotely
via IP network to IMS Core with NG eCall/emergency services support.

5. © ETSI 5
Consequences of the limitations of the 1st NG eCall
1. Simplyfied test network configuration: test network without 2G/3G/4G
mobile radio access networks and mobile (MSC and EPC) Cores:
2. Narrowing the test execution scope of the ETSI TS 103 683
No executions of test scenarios that check procedures of IVS
attachment/registration to 3G/4G mobile RAN;
No executions of test scenarions with CSFB (CS fall back) functionality;
PS Core Networks
IMS Core
SIP
VoLTE/VoIP
P-CSCF E-CSCF IBCF
VoIP
IP VPN
Network
PSAP
CS
eCall
NG
eCall
B
C
F
IVSs connected over
Public IP address
IVS
CS
eCall
NG
eCall
remote

6. © ETSI 6
Test ntw. Infrastructure provided by and
Setup of the 1st ETSI NG eCall Plugtests(TM)
1 x Virtual IMS Core with full support for NG eCall/emergency services
2 x NG IVS devices connected remotely via direct IP address;
4 x NG PSAPs connected via VPN to IMS Core.
1. Setup and pre-testing period:
• Extended from 2 to 3 weeks period;
• Connecting IVSs via direct public IP
and PSAPs via VPNs to vIMS Core;
• Necessary adaptations in
configurations needed for successfull
IVS registration to vIMS;
2. Plugtests 1:1 test sessions:
• 1 week period;
• Total of 8 test sessions;
3. For 2 weeks (after the Plugtests), the
testing infrastructure was offered to sAFE
project partners for additional testing in
accordance to sAFE validation scope.

7. © ETSI 7
Test scope (TS 103 683) of the 1st NG eCall Plugtests
Test Scope
No. of
Tests
No. of
Executed
%
Basic test scenarios
- Manual eCall
- Automatic eCall
- MSD transfer
- Callback
- PSAP release
- Verification of Audio
interfaces
- MSD update
14 12 86%
Advanced test scenarios
- only IVS check
- only PSAP check
- IVS and PSAP check
22 11 50%
SUM 36 23 64%

8. © ETSI 8
Results of the 1st ETSI NG eCall Plugtests(TM) - Statistics
8 sessions; results per sessions:
Results per test groups:
Event summary
Interoperability Totals
OK NO Run
IVS - PSAP 76 (76.0%) 24 (24.0%) 100
Legacy eCall
Fallback
0 (0.0%) 0 (0.0%) 0
Interoperability Totals
OK NO Run
Minimum 7 1 8
Maximum 14 8 22
Average 11 4 15
There were exactly 100
executions of 23 IVS-PSAP
end-to-end test scenarios
with an average 76%
success rate!

9. © ETSI 9
Results of the 1st ETSI NG eCall Plugtests(TM)- issues found
Some issues that were solved during the event:
✓ Wrong connection to public IP address or URN was reported
✓ Wrong SIP header values were reported to participants
✓ Wrong SDP values were reported to participants
✓ Adapting vIMS setup to individual requirements
✓ Wrong Message Body (MSD+SDP) calculation was noticed and reported to participant
✓ Initial message INVITE was not recognized or correctly received at PSAP side
✓ ACK was not forwarded to PSAP (ACK ReqLine shall be the same as in INVITE)
... more in NG eCall Plugtests ETSI CTI REPORT:
(https://portal.etsi.org/Portals/0/TBpages/CTI/Docs/NGeCall_1_Plugtest_Report_V1_0_3.pdf )

10. © ETSI 10
Lessons learned from the 1st Plugtests event
✓ It took some efforts to remotely setup/configure (pre-testing setup period of 2-3
weeks) the test infrastructure:
▪ Remotely connecting PSAPs to vIMS core via VPN connections - several iterations required;
▪ Remotely connecting IVS to vIMS via direct IP access – tried several configurations with
private/public IP addresses;
▪ Several iterations in adaptations in configurations to successfully register IVS devices to vIMS Core;
Collaboration between IVS, IMS and PSAPs and Testing/Networking experts is a key
for a successfull event;
✓ Once, the 1st basic eCall was successfully established between IVS, vIMS and
PSAPs, relatively high rate (76%) of successfull test executions for the 1st Plugtests
was achieved  do 1st end-to-end successfull basic eCall test scenario in
setup/pre-test period.
✓ Results and issues analyses were feed into the updates of the CEN base and ETSI
Interoperability tests standards.

11. © ETSI
Next NG eCall
Plugtests
Scheduled for 2022

12. © ETSI 12
Embracing on-going NG eCall standardizations activities ...
CEN EN 15722:2020
MSD v3
ETSI TS 103 683
+
NEW TEST DESCRIPTIONS
AND CONFIGUARTIONS
CEN TS 17249-1 to -6
Different vehicle categories
ETSI TS 103 479
Network independent access to ES
CEN TS 17184
New release of NG eCall base spec
CEN TS 17240
New release of conformance tests
Inputs from 1st NG eCall
Plugtests
✓ Updated requirements of CEN EN
15722:2020 – “ECall minimum set of data”
MSD version 3)
✓ Set of CEN TS 17249-1 to -6 related to NG
eCall describing different vehicle categories
✓ ETSI TS 103 479 “Core elements for
network independent access to emergency
services” (different configurations)
✓ New revision of CEN TS 17184:2018 – “eCall
High level application Protocols (HLAP)
using IMS packet switched networks”
✓ New revision of CEN TS 17240:2018 – “eCall
end to end conformance testing for IMS
packet switched based systems”
New draft of TS 103 683
available in Spring 2022
Scope of Next NG eCall
Plugtests event!

13. © ETSI 13
Scope of the next NG eCall Plugtests
1. Interoperability tests for (NG IVS-NG PSAP) sessions
✓ Enhanced interoperability test spec ETSI TS 103 683
2. Conformance tests against test platforms
✓ New revision of conformance test spec CEN TS 17240:2021
3. Performance tests
? Due to availability of TEST platforms on-site to execute proformance tests
4. Audio/Accoustic tests
? Due to availability of TEST platforms on-site to execute audio/accoustic tests

14. © ETSI 14
Aiming to organize an on-site/hybrid event with full
Network/Test support of NG eCall service capabilites....
EPC Core (4G)
PS Core Networks
IMS Core
SIP
VoLTE/VoIP
IBCF
VoLTE/VoIP
E-CSCF
P-CSCF
IP VPN
Network
Remote
PSAP
CS
eCall
NG
eCall
B
C
F
MGCF
on-site
PSAP
CS
eCall
NG
eCall
eNB
IVS
CS
eCall
NG
eCall
on-site
PS Access Networks
MME
S-GW P-GW
1. Network connectivity
✓ PS Access network (4G eNB + EPC)
✓ PS Core network (IMS)
✓ VPN connectivity for remote PSAPs
2. End points connectivity
✓ NG IVSs onsite mobile connectivity
✓ in case of mobile remote connectivity
emergency calls would end up in
participants country
✓ NG PSAPs hybrid connectivity (onsite
or remote VPN connection)
3. Test equipment preferably onsite
due to limitations in executing
conformance, performance and
accoustic tests remotely.

15. © ETSI 15
The next step: Questionnaire about SCOPE and TIMING
Questionnaire about SCOPE and TIMING will be sent
out by ETSI to potential participants to collect
willingness of vendors to participate/readyness of the
NG IVS devices and NG PSAPs implementations that are
inline with the proposed Test Scope.

16. © ETSI 16
Thank you for your attention
Presented by:
Ana Robnik, Strategic R&D Consultant, Iskratel
robnik@iskratel.si
Co-Author:
Boštjan Pintar, Technical and Standardization Expert, Sintesio
pintar@sintesio.org
Please, address any question related to NG eCall Plugtests to
Denis Filatov, Tehnical Expert, ETSI
denis.filatov@etsi.org