ETSI TS 126 132 V17.2.0 (2023-04)

Universal Mobile Telecommunications System (UMTS); LTE; 5G; Speech and video telephony terminal acoustic test specification (3GPP TS 26.132 version 17.2.0 Release 17)

RTS/TSGS-0426132vh20

General Information

• Status: Not Published
• Technical Committee: 3GPP SA 4 - Codec
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 21-Apr-2023

Standards Content (Sample)

ETSI TS 126 132 V17.2.0 (2023-04)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
Speech and video telephony terminal acoustic test
specification
(3GPP TS 26.132 version 17.2.0 Release 17)



---------------------- Page: 1 ----------------------
3GPP TS 26.132 version 17.2.0 Release 17 1 ETSI TS 126 132 V17.2.0 (2023-04)

Reference
RTS/TSGS-0426132vh20
Keywords
5G,LTE,UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
https://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
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
No representation or warranty is made that this deliverable is technically accurate or sufficient or conforms to any law
rule and/or regulation and further, no representation or warranty is made of merchantability or fitness
and/or governmental
for any particular purpose or against infringement of intellectual property rights.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
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 2023.
All rights reserved.

ETSI

---------------------- Page: 2 ----------------------
3GPP TS 26.132 version 17.2.0 Release 17 2 ETSI TS 126 132 V17.2.0 (2023-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are 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 Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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.
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.
Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities. These shall be
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 3GPP and ETSI identities can be found under https://webapp.etsi.org/key/queryform.asp.
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: 3 ----------------------
3GPP TS 26.132 version 17.2.0 Release 17 3 ETSI TS 126 132 V17.2.0 (2023-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 11
Introduction . 11
1 Scope . 12
2 References . 12
3 Definitions, symbols and abbreviations . 14
3.1 Definitions . 14
3.2 Abbreviations . 15
4 Interface Definitions . 16
4.1 General . 16
4.4 Electrical interfaces . 17
5 Test configurations . 17
5.1 Setup for terminals . 17
5.1.1 Setup for handset terminals . 18
5.1.2 Setup for headset terminals . 19
5.1.3 Setup for hands-free terminals . 19
5.1.3.1 Vehicle-mounted hands-free . 19
5.1.3.2 Desktop hands-free. 20
5.1.3.3 Hand-held hands-free . 20
5.1.3.4 Softphone including speakers and microphone . 21
5.1.3.5 Softphone with separate speakers . 24
5.1.4 Position and calibration of HATS . 28
5.1.5 Test setup for quality in the presence of ambient noise measurements . 28
5.1.5.1 Handset . 28
5.1.5.2 Hand-held hands-free . 29
5.1.6 Test setup for electrical interfaces . 32
5.1.6.1 Wired analogue connection . 32
5.1.6.2 Digital connection . 33
5.2 Setup of the electrical interfaces of test equipment . 35
5.2.1 Codec approach and specification. 35
5.2.2 Direct digital processing approach . 35
5.3 Accuracy of test equipment . 36
5.4 Test signals . 37
5.5 Void . 38
5.5.1 Void . 38
5.5.2 Void . 38
6 Test conditions . 38
6.1 Environmental conditions . 38
6.1.1 Handset and headset terminals . 38
6.1.2 Hands-free terminals . 38
6.2 System simulator conditions. 39
7 Narrowband telephony transmission performance test methods . 39
7.1 Applicability . 39
7.2 Overall loss/loudness ratings . 39
7.2.1 General . 39
7.2.2 Connections with handset UE . 40
7.2.2.1 Sending loudness rating (SLR) . 40
7.2.2.2 Receiving loudness rating (RLR) . 40
7.2.2.3 Receiving loudness rating (RLR) in the presence of background noise . 40
ETSI

---------------------- Page: 4 ----------------------
3GPP TS 26.132 version 17.2.0 Release 17 4 ETSI TS 126 132 V17.2.0 (2023-04)
7.2.3 Connections with desktop and vehicle-mounted hands-free UE. 41
7.2.3.1 Sending loudness rating (SLR) . 41
7.2.3.2 Receiving Loudness Rating (RLR) . 42
7.2.4 Connections with hand-held hands-free UE . 42
7.2.4.1 Sending loudness rating (SLR) . 42
7.2.4.2 Receiving loudness rating (RLR) . 43
7.2.5 Connections with headset UE . 43
7.2.6 Connections with electrical interface UE . 43
7.2.6.1 Sending junction loudness rating (SJLR) . 43
7.2.6.2 Receving junction loudness rating (RJLR) . 43
7.3 Idle channel noise (handset, headset and electrical interface UE) . 44
7.3.1 Sending (handset and headset UE) . 44
7.3.2 Receiving (handset and headset UE) . 45
7.3.3 Sending (electrical interface UE) . 45
7.3.4 Receiving (electrical interface UE) . 45
7.4 Sensitivity/frequency characteristics . 45
7.4.0 General . 45
7.4.1 Handset and headset UE sending . 45
7.4.2 Handset and headset UE receiving . 46
7.4.3 Desktop and vehicle-mounted hands-free UE sending . 46
7.4.4 Desktop and vehicle-mounted hands-free UE receiving . 46
7.4.5 Hand-held hands-free UE sending . 46
7.4.6 Hand-held hands-free UE receiving . 47
7.4.7 Electrical interface UE sending . 47
7.4.8 Electrical interface UE receiving . 47
7.5 Sidetone characteristics . 48
7.5.1 Connections with handset UE . 48
7.5.1.0 General . 48
7.5.1.1 void . 48
7.5.1.2 Connections with handset UE – HATS method . 48
7.5.2 Headset UE . 48
7.5.3 Hands-free UE (all categories) . 49
7.5.3a Electrical interface UE . 49
7.5.4 Sidetone delay for handset, headset or electrical interface UE . 49
7.6 Stability loss . 50
7.7 Acoustic echo control . 51
7.7.1 General . 51
7.7.2 Acoustic echo control in a hands-free UE . 52
7.7.3 Acoustic echo control in handset UE . 52
7.7.4 Acoustic echo control in a headset UE . 52
7.7.5 Acoustic echo control in a electrical interface UE . 52
7.8 Distortion . 52
7.8.1 Sending distortion . 52
7.8.2 Receiving distortion . 53
7.9 Void . 55
7.10 Delay . 55
7.10.0 UE Delay Measurement Methodologies . 55
7.10.1 Delay in sending direction (Handset UE) . 55
7.10.1a Delay in sending direction (headset UE) . 56
7.10.1b Delay in sending direction (electrical interface UE) . 57
7.10.2 Delay in receiving direction (handset UE) . 57
7.10.2a Delay in receiving direction (headset UE) . 58
7.10.2b Delay in receiving direction (electrical interface UE) . 58
7.10.3 Delay in sending + receiving direction using "echo" method (handset UE) . 59
7.10.3a Delay in sending + receiving direction using "echo" method (headset UE) . 60
7.10.3b Delay in sending + receiving direction using "echo" method (electrical interface UE) . 60
7.10.4 Delay and speech quality in conditions with packet arrival time variations and packet loss (handset,
headset, electrical interface UE) . 60
7.10.4.1 Delay in sending direction . 60
7.10.4.2 Delay in receiving direction . 61
7.10.4.3 Speech quality loss in conditions with packet arrival time variations and packet loss . 62
7.10.5 UE send clock accuracy . 62
ETSI

---------------------- Page: 5 ----------------------
3GPP TS 26.132 version 17.2.0 Release 17 5 ETSI TS 126 132 V17.2.0 (2023-04)
7.10.6 UE receiving with clock skew . 63
7.11 Echo control characteristics . 63
7.11.1 Test set-up and test signals . 63
7.11.2 Test method . 64
7.11.2.1 Signal alignment . 65
7.11.2.2 Signal level computation and frame classification . 65
7.11.2.3 Classification into categories . 65
7.12 Send speech quality and noise intrusiveness in the presence of ambient noise . 65
7.12.1 Handset UE . 65
7.12.2 Hand-held hands-free UE . 67
7.12.3 Electrical interface UE . 68
7.13 Jitter buffer management behaviour (handset, headset and electrical interface UE) . 68
7.13.0 General . 68
7.13.1 Delay histogram . 69
7.13.2 Speech quality loss histogram . 70
8 Wideband telephony transmission performance test methods . 71
8.1 Applicability . 71
8.2 Overall loss/loudness ratings . 71
8.2.1 General . 71
8.2.2 Connections with handset UE . 71
8.2.2.1 Sending loudness rating (SLR) . 71
8.2.2.2 Receiving loudness rating (RLR) . 71
8.2.2.3 Receiving loudness rating (RLR) in the presence of background noise . 72
8.2.3 Connections with desktop and vehicle-mounted hands-free UE. 72
8.2.3.1 Sending loudness rating (SLR) . 72
8.2.3.2 Receiving loudness rating (RLR) . 73
8.2.4 Connections with hand-held hands-free UE . 73
8.2.4.1 Sending loudness rating (SLR) . 73
8.2.4.2 Receiving loudness rating (RLR) . 74
8.2.5 Connections with headset UE . 74
8.2.6 Connections with electrical interface UE . 74
8.2.6.1 Sending junction loudness rating (SJLR) . 74
8.2.6.2 Receving junction loudness rating (RJLR) . 74
8.3 Idle channel noise (handset, headset and electrical interface UE) . 75
8.3.1 Sending (handset and headset UE) . 75
8.3.2 Receiving (handset and headset UE) .
...