SIST-V ETSI/EG 202 057-4 V1.2.1:2009

Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
ETSI Guide


Speech Processing, Transmission and Quality Aspects (STQ);
User related QoS parameter definitions and measurements;
Part 4: Internet access

---------------------- Page: 1 ----------------------
2 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)



Reference
REG/STQ-00101-4
Keywords
internet, QoS
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
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
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
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2008.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI

---------------------- Page: 2 ----------------------
3 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .6
1 Scope.7
2 References.7
2.1 Normative references.8
2.2 Informative references.8
3 Definitions and abbreviations.9
3.1 Definitions.9
3.2 Abbreviations.10
4 General considerations .11
4.1 Scope.11
4.1.1 Understanding of the term "Internet access".11
4.1.2 Internet accesses covered.11
4.2 Use of the parameters .12
4.3 Parameters and measurement issues.12
4.3.1 Real traffic monitoring versus test calls.13
4.3.2 Measurement.14
4.4 Data collection issues .15
4.4.1 Reporting for different classes of customers.15
4.4.2 Non standard levels of QoS .15
4.4.3 Data processing.15
4.4.4 Data collection period.15
4.5 Comparability of measurements.15
4.6 Publication of QoS parameters.16
5 QoS parameters for Internet access .16
5.1 Login time.17
5.1.1 Definition.17
5.1.2 Application.17
5.1.3 Measurement and statistics .17
5.2 Data transmission speed achieved .17
5.2.1 Definition.17
5.2.2 Application.17
5.2.3 Measurement and statistics .17
5.3 Unsuccessful data transmission ratio.18
5.3.1 Definition.18
5.3.2 Application.18
5.3.3 Measurement and statistics .18
5.4 Successful log-in ratio .18
5.4.1 Definition.18
5.4.2 Application.19
5.4.3 Measurement and statistics .19
5.5 Delay (one way transmission time) .19
5.5.1 Definition.19
5.5.2 Application.19
5.5.3 Measurement and statistics .19
Annex A (normative): Reference connection.20
Annex B (normative): Measurement set-up .21
Annex C (normative): Guidance on the determination of representative test calls .24
ETSI

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4 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
Annex D (normative): Specification of test file.27
Annex E (normative): Combination of weekly or monthly results.28
Annex F (normative): Guidance on technical performance aspects of Internet accesses:
Delay, packet loss and jitter.29
F.1 QoS versus network performance .29
F.2 Implications of delay, packet loss and jitter .29
F.2.1 Delay.29
F.2.2 Jitter.30
F.2.3 Packet loss.30
F.2.4 Performance considerations for different applications .30
F.3 Further information .32
Annex G (normative): Further explanation of "X % of".33
Annex H (informative): Performance targets .34
Annex I (informative): Bibliography.36
History .37

ETSI

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5 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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 (http://webapp.etsi.org/IPR/home.asp).
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.
Foreword
This ETSI Guide (EG) has been produced by ETSI Technical Committee Speech Processing, Transmission and Quality
Aspects (STQ), and is now submitted for the ETSI standards Membership Approval Procedure.
The present document is part 4 of a multi-part deliverable covering Speech Processing, Transmission and Quality
Aspects (STQ); User related QoS parameter definitions and measurements, as identified below:
Part 1: "General";
Part 2: "Voice telephony, Group 3 fax, modem data services and SMS";
Part 3: "QoS parameters specific to Public Land Mobile Networks (PLMN)";
Part 4: "Internet access".
EG 202 057-1 [10] contains general user related QoS parameter definitions and measurement methods that can be
applied to any service as well as user related QoS parameter definitions and measurement methods for voice, data and
fax services accessed via the public telecommunications network.
EG 202 057-2 [11] contains user related QoS parameter definitions and measurement methods for voice, modem data,
fax services and SMS accessed via the public telecommunications network. The data parameters are specified for the
case where a V.9x series modem is used since this kind of modem is in common use.
EG 202 057-3 [12] contains user related QoS parameter definitions and measurement methods specific to public land
mobile telecommunication networks (PLMN).
EG 202 057-4 (the present document) contains user related QoS parameter definitions and measurement methods
specific to Internet access.
The present document takes into account as far as practicable the following eight principles:
1) QoS parameters should be easily understood by the public, and be useful and important to them.
2) All parameters are applicable at the network termination point (where appropriate).
3) Where measurements are possible they should be made on the customer's premises, using in-service lines.
NOTE: Literally principles 2 and 3 imply that all measurements are carried out at the NTP. However, the NTP in
PLMNs is not precisely defined. Other methods are used to achieve an adequate representation of the
quality that would be perceived at the NTP for the parameters defined in the present document.
4) To be as realistic as possible, real traffic rather than test calls should be used as a basis of the measurements,
wherever possible.
5) Parameters should be capable of verification by independent organizations. This verification might be made by
direct measurements or by audit of service provider's measurements.
6) The accuracy of QoS values should be set to a level consistent with measurement methods being as simple as
possible with costs as low as possible.
ETSI

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6 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
7) The parameters are designed for both statistical and individual application. The statistical values should be
derived by the application of a simple statistical function to the individual values. The statistical function
should be specified in this multi-part deliverable. This multi-part deliverable should also contain guidelines on
how statistically significant samples should be selected.
8) The statistical functions should be designed so QoS figures from different service providers can be compared
easily by users and in particular consumers.
Introduction
The present document provides definitions and measurement methods for various QoS parameters for Internet access.
The parameters were developed on the basis of the user's Quality of Service criteria identified in the TR 102 276 [9].
ETSI

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7 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
1 Scope
The present document contains definitions and measurement methods for a range of user perceivable Quality of Service
(QoS) parameters. The purpose of these parameters is to define objective and comparable measures of the QoS
delivered to users/customers for use by users/customers. The present document applies to any telecommunication
service however some parameters may have a limited application.
The present document is intended to provide a menu from which individual items can be selected. There is no
obligation to use any or all of the parameters.
The QoS parameters are related primarily to services and service features and not to the technology used to provide the
services. Therefore the parameters should be capable of use when the services are provided on new technologies such as
IP and ATM or other packet switched technologies as well as on circuit switched technologies.
The establishment of target values for QoS is outside the scope of the present document. The QoS parameters listed in
the present document are also not intended to assess the complete QoS of a telecommunication service. The present
document provides a set of QoS parameters that covers specific user related QoS aspects rather than a complete list of
QoS parameters. This set has been chosen to address areas where monitoring of QoS is likely to be most worthwhile,
i.e. the areas that are most likely to be affected by any QoS problems.
If stakeholders wish to examine other QoS aspects they are recommended to follow the general approach of the present
document - as far as practicable - as a basis for the development of definitions and measurement methods for new
specific QoS parameters.
The set of QoS parameters is designed to be understood by the users of various telecommunications services. Sub-sets
of these parameters can be selected for use in different circumstances. For example a specific parameter might be
relevant for many users in some countries or markets but the same parameter might not be of relevance in others.
Therefore stakeholders - users, customers, regulators, service providers, network operators and other parties interested
in the use of QoS parameters - should decide in co-operation, which parameters should be used in their particular
situation. This decision should take account of:
• The precise purpose for which they will be used.
• The general level of quality achieved by most operators.
• The degree to which the parameters will provide a reliable comparison of performance.
• The cost of measuring and reporting each parameter.
The parameters defined in the present document are applicable to any kind of Internet access independently of the
underlying technology.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
ETSI

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8 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TS 102 250-5: "Speech Processing, Transmission and Quality Aspects (STQ); QoS aspects
for popular services in GSM and 3G networks; Part 5: Definition of typical measurement profiles".
[2] ETSI TS 102 250-6: "Speech Processing, Transmission and Quality Aspects (STQ); QoS aspects
for popular services in GSM and 3G networks; Part 6: Post processing and statistical methods".
[3] ITU-T Recommendation G.1010: "End-user multimedia QoS categories".
[4] ITU-T Recommendation G.1020: "Performance parameter definitions for quality of speech and
other voiceband applications utilizing IP networks".
[5] ITU-T Recommendation Y.1540: "Internet protocol data communication service - IP packet
transfer and availability performance parameters".
[6] ITU-T Recommendation Y.1541: "Network performance objectives for IP-based services".
[7] IETF RFC 792: "Internet Control Message Protocol".
[8] ITU-T Recommendation I.350: "General aspects of quality of service and network performance in
digital networks, including ISDNs".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[9] ETSI TR 102 276: "User Group; Users' Quality of Service Criteria for Internet Access in Europe".
[10] ETSI EG 202 057-1: "Speech Processing, Transmission and Quality Aspects (STQ); User related
QoS parameter definitions and measurements; Part 1: General".
[11] ETSI EG 202 057-2: "Speech Processing, Transmission and Quality Aspects (STQ); User related
QoS parameter definitions and measurements; Part 2: Voice telephony, Group 3 fax, modem data
services and SMS".
[12] ETSI EG 202 057-3: "Speech Processing, Transmission and Quality Aspects (STQ); User related
QoS parameter definitions and measurements; Part 3: QoS parameters specific to Public Land
Mobile Networks (PLMN)".
ETSI

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9 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
NOTE: Since the purpose of the present document is to formulate definitions for QoS parameters, these
definitions are given in the main body of the text and are not repeated here.
authentication: process of verifying a claimed identity to ensure that the stated identity of a user is correct
authorization: process of determining if the presenter of certain credentials is authorized to access a resource or make
use of a service
call: generic term to describe the establishment, utilization, and release of a connection (bearer path) or data flow
email: messages automatically passed from one computer user to another, often through computer networks and/or via
modems over telephone lines
File Transfer Protocol (FTP): protocol that allows users to copy files between their local system and any system they
can reach on the network
host: computer that provides client stations with access to files and printers as shared resources to a computer network
Internet: computer network consisting of a worldwide network of computer networks that use the TCP/IP network
protocols to facilitate data transmission and exchange
Internet access: making available of facilities and/or services for the purpose of providing an access to the public
Internet in order to provide a user with access to services or resources of the Internet
NOTE 1: The Internet access can be separated in two parts, the physical and the logical access.
The physical access provides a connection form the user's premises to, but not including, the POP
(normally a dial-up circuit or broadband link or leased line) whereas the logical access consist of the
setting up of an account that later on enables the user by a login process with the ability to access to the
services and resources of the Internet (normally by assigning an IP address).
NOTE 2: The physical and logical access may be provided by different service providers.
NOTE 3: The function of the physical access may be provided by several interconnected networks.
Internet Access Provider (IAP): organization that provides users with an Internet access
Internet Protocol (IP): main internetworking protocol used in the Internet. Used in conjunction with the Transfer
Control Protocol (TCP) to form TCP/IP
IP address: four-byte number uniquely defining each host on the Internet, usually written in dotted-decimal notation
with periods separating the bytes
EXAMPLE: 217.111.27.1 for IP Version 4.
login process: multi-step process which includes both authentication and authorization as well as other system start-up
tasks in order to provide a user with access to services or resources
public Internet: part of the Internet that is available to the general public
NOTE: The access is normally provided by Internet access and Internet service providers.
ETSI

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10 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
physical access provider: organization that arranges the provision of physical access from the user's premises to the
POP
NOTE 1: Excluding, the POP.
NOTE 2: Usually a dial-up circuit or an ADSL link or leased line are used.
NOTE 3: The function of the physical access provider may be provided by several interconnected networks.
Public Telecommunications Network (PTN): telecommunications network used wholly or partly for the provision of
publicly available telecommunications services
router: device which forwards packets between networks
NOTE: The forwarding decision is based on network layer information and routing tables, often constructed by
routing protocols. An IP router forwards data based on IP source and destination addresses.
stakeholder: party having an interest in the level of quality of a service
telecommunications: technical process of sending, transmitting and receiving any kind of message in the form of signs,
voice, images or sounds by means of telecommunications systems
telecommunication services: provision of telecommunications and the provision of other additional services that are
closely related to the provision of telecommunications like e.g. billing, directory services
telecommunications systems: technical equipment or systems capable of sending, transmitting, switching, receiving,
steering or controlling as messages identifiable electromagnetic signals
user: individuals, including consumers, or organizations using or requesting publicly available telecommunications
services
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
DSL Digital Subscriber Line
FQDN Fully Qualified Domain Name
FTP File Transfer Protocol
GPRS General Packet Radio Service
GSM Global System for Mobile communications
IAP Internet Access Provider
ICMP Internet Control Message Protocol
IP Internet Protocol
kbit/s kilobit per second
NTP Network Termination Point
OS Operating System
PC Personal Computer
PING Packet InterNet Groper
PLMN Public Land Mobile Network
POP Point Of Presence
PTN Public Telecommunications Network
QoS Quality of Service
SMS Short Message Service
UMTS Universal Mobile Telecommunications System
WLAN Wireless Local Area Network
xDSL generic Digital Subscriber Line
ETSI

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11 Final draft ETSI EG 202 057-4 V1.2.0 (2008-05)
4 General considerations
4.1 Scope
4.1.1 Understanding of the term "Internet access"
Unlike to other (traditional) telecommunication services the Internet access - as it is used in these days - consists of
different connections and services that have to be available in combination in order to allow for a functional Internet
access. All these different connections and services can be understood as separate telecommunication services with their
own QoS aspects. However, the quality of services as perceived by the user accessed via the Internet like e.g. web
browsing and email will be influenced by the quality of each single element of the end-to-end connection/service.
Furthermore the term "Internet access" is not only understood by the naive user as an access in the real meaning of the
word, i.e. the provision of a physical connection and being able to establish connections to other parts or accesses of the
network. The user understands Internet access as having access to (end-to-end) services that rely on the transport
mechan
...

SLOVENSKI STANDARD
SIST-V ETSI/EG 202 057-4 V1.2.1:2009
01-april-2009
Vidiki obdelave, prenosa in kakovosti govora (STQ) - Definicije in meritve
parametrov QoS, ki se nanašajo na uporabnika - 4. del: Internetni dostop
Speech Processing, Transmission and Quality Aspects (STQ) - User related QoS
parameter definitions and measurements - Part 4: Internet access
Ta slovenski standard je istoveten z: EG 202 057-4 Version 1.2.1
ICS:
33.040.35 Telefonska omrežja Telephone networks
SIST-V ETSI/EG 202 057-4 V1.2.1:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-V ETSI/EG 202 057-4 V1.2.1:2009

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SIST-V ETSI/EG 202 057-4 V1.2.1:2009

ETSI EG 202 057-4 V1.2.1 (2008-07)
ETSI Guide


Speech Processing, Transmission and Quality Aspects (STQ);
User related QoS parameter definitions and measurements;
Part 4: Internet access

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SIST-V ETSI/EG 202 057-4 V1.2.1:2009
 2 ETSI EG 202 057-4 V1.2.1 (2008-07)



Reference
REG/STQ-00101-4
Keywords
internet, QoS
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
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
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
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2008.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI

---------------------- Page: 4 ----------------------

SIST-V ETSI/EG 202 057-4 V1.2.1:2009
 3 ETSI EG 202 057-4 V1.2.1 (2008-07)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .6
1 Scope.7
2 References.7
2.1 Normative references.8
2.2 Informative references.8
3 Definitions and abbreviations.9
3.1 Definitions.9
3.2 Abbreviations.10
4 General considerations .11
4.1 Scope.11
4.1.1 Understanding of the term "Internet access".11
4.1.2 Internet accesses covered.11
4.2 Use of the parameters .12
4.3 Parameters and measurement issues.12
4.3.1 Real traffic monitoring versus test calls.13
4.3.2 Measurement.14
4.4 Data collection issues .15
4.4.1 Reporting for different classes of customers.15
4.4.2 Non standard levels of QoS .15
4.4.3 Data processing.15
4.4.4 Data collection period.15
4.5 Comparability of measurements.15
4.6 Publication of QoS parameters.16
5 QoS parameters for Internet access .16
5.1 Login time.17
5.1.1 Definition.17
5.1.2 Application.17
5.1.3 Measurement and statistics .17
5.2 Data transmission speed achieved .17
5.2.1 Definition.17
5.2.2 Application.17
5.2.3 Measurement and statistics .17
5.3 Unsuccessful data transmission ratio.18
5.3.1 Definition.18
5.3.2 Application.18
5.3.3 Measurement and statistics .18
5.4 Successful log-in ratio .18
5.4.1 Definition.18
5.4.2 Application.19
5.4.3 Measurement and statistics .19
5.5 Delay (one way transmission time) .19
5.5.1 Definition.19
5.5.2 Application.19
5.5.3 Measurement and statistics .19
Annex A (normative): Reference connection.20
Annex B (normative): Measurement set-up .21
Annex C (normative): Guidance on the determination of representative test calls .24
ETSI

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 4 ETSI EG 202 057-4 V1.2.1 (2008-07)
Annex D (normative): Specification of test file.27
Annex E (normative): Combination of weekly or monthly results.28
Annex F (normative): Guidance on technical performance aspects of Internet accesses:
Delay, packet loss and jitter.29
F.1 QoS versus network performance .29
F.2 Implications of delay, packet loss and jitter .29
F.2.1 Delay.29
F.2.2 Jitter.30
F.2.3 Packet loss.30
F.2.4 Performance considerations for different applications .30
F.3 Further information .32
Annex G (normative): Further explanation of "X % of".33
Annex H (informative): Performance targets .34
Annex I (informative): Bibliography.36
History .37

ETSI

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SIST-V ETSI/EG 202 057-4 V1.2.1:2009
 5 ETSI EG 202 057-4 V1.2.1 (2008-07)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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 (http://webapp.etsi.org/IPR/home.asp).
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.
Foreword
This ETSI Guide (EG) has been produced by ETSI Technical Committee Speech Processing, Transmission and Quality
Aspects (STQ).
The present document is part 4 of a multi-part deliverable covering Speech Processing, Transmission and Quality
Aspects (STQ); User related QoS parameter definitions and measurements, as identified below:
Part 1: "General";
Part 2: "Voice telephony, Group 3 fax, modem data services and SMS";
Part 3: "QoS parameters specific to Public Land Mobile Networks (PLMN)";
Part 4: "Internet access".
EG 202 057-1 [i.2] contains general user related QoS parameter definitions and measurement methods that can be
applied to any service as well as user related QoS parameter definitions and measurement methods for voice, data and
fax services accessed via the public telecommunications network.
EG 202 057-2 [i.3] contains user related QoS parameter definitions and measurement methods for voice, modem data,
fax services and SMS accessed via the public telecommunications network. The data parameters are specified for the
case where a V.9x series modem is used since this kind of modem is in common use.
EG 202 057-3 [i.4] contains user related QoS parameter definitions and measurement methods specific to public land
mobile telecommunication networks (PLMN).
EG 202 057-4 (the present document) contains user related QoS parameter definitions and measurement methods
specific to Internet access.
The present document takes into account as far as practicable the following eight principles:
1) QoS parameters should be easily understood by the public, and be useful and important to them.
2) All parameters are applicable at the network termination point (where appropriate).
3) Where measurements are possible they should be made on the customer's premises, using in-service lines.
NOTE: Literally principles 2 and 3 imply that all measurements are carried out at the NTP. However, the NTP in
PLMNs is not precisely defined. Other methods are used to achieve an adequate representation of the
quality that would be perceived at the NTP for the parameters defined in the present document.
4) To be as realistic as possible, real traffic rather than test calls should be used as a basis of the measurements,
wherever possible.
5) Parameters should be capable of verification by independent organizations. This verification might be made by
direct measurements or by audit of service provider's measurements.
6) The accuracy of QoS values should be set to a level consistent with measurement methods being as simple as
possible with costs as low as possible.
ETSI

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SIST-V ETSI/EG 202 057-4 V1.2.1:2009
 6 ETSI EG 202 057-4 V1.2.1 (2008-07)
7) The parameters are designed for both statistical and individual application. The statistical values should be
derived by the application of a simple statistical function to the individual values. The statistical function
should be specified in this multi-part deliverable. This multi-part deliverable should also contain guidelines on
how statistically significant samples should be selected.
8) The statistical functions should be designed so QoS figures from different service providers can be compared
easily by users and in particular consumers.
Introduction
The present document provides definitions and measurement methods for various QoS parameters for Internet access.
The parameters were developed on the basis of the user's Quality of Service criteria identified in the TR 102 276 [i.1].
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1 Scope
The present document contains definitions and measurement methods for a range of user perceivable Quality of Service
(QoS) parameters. The purpose of these parameters is to define objective and comparable measures of the QoS
delivered to users/customers for use by users/customers. The present document applies to any telecommunication
service however some parameters may have a limited application.
The present document is intended to provide a menu from which individual items can be selected. There is no
obligation to use any or all of the parameters.
The QoS parameters are related primarily to services and service features and not to the technology used to provide the
services. Therefore the parameters should be capable of use when the services are provided on new technologies such as
IP and ATM or other packet switched technologies as well as on circuit switched technologies.
The establishment of target values for QoS is outside the scope of the present document. The QoS parameters listed in
the present document are also not intended to assess the complete QoS of a telecommunication service. The present
document provides a set of QoS parameters that covers specific user related QoS aspects rather than a complete list of
QoS parameters. This set has been chosen to address areas where monitoring of QoS is likely to be most worthwhile,
i.e. the areas that are most likely to be affected by any QoS problems.
If stakeholders wish to examine other QoS aspects they are recommended to follow the general approach of the present
document - as far as practicable - as a basis for the development of definitions and measurement methods for new
specific QoS parameters.
The set of QoS parameters is designed to be understood by the users of various telecommunications services. Sub-sets
of these parameters can be selected for use in different circumstances. For example a specific parameter might be
relevant for many users in some countries or markets but the same parameter might not be of relevance in others.
Therefore stakeholders - users, customers, regulators, service providers, network operators and other parties interested
in the use of QoS parameters - should decide in co-operation, which parameters should be used in their particular
situation. This decision should take account of:
• The precise purpose for which they will be used.
• The general level of quality achieved by most operators.
• The degree to which the parameters will provide a reliable comparison of performance.
• The cost of measuring and reporting each parameter.
The parameters defined in the present document are applicable to any kind of Internet access independently of the
underlying technology.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
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For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TS 102 250-5: "Speech Processing, Transmission and Quality Aspects (STQ); QoS aspects
for popular services in GSM and 3G networks; Part 5: Definition of typical measurement profiles".
[2] ETSI TS 102 250-6: "Speech Processing, Transmission and Quality Aspects (STQ); QoS aspects
for popular services in GSM and 3G networks; Part 6: Post processing and statistical methods".
[3] ITU-T Recommendation G.1010: "End-user multimedia QoS categories".
[4] ITU-T Recommendation G.1020: "Performance parameter definitions for quality of speech and
other voiceband applications utilizing IP networks".
[5] ITU-T Recommendation Y.1540: "Internet protocol data communication service - IP packet
transfer and availability performance parameters".
[6] ITU-T Recommendation Y.1541: "Network performance objectives for IP-based services".
[7] IETF RFC 792: "Internet Control Message Protocol".
[8] ITU-T Recommendation I.350: "General aspects of quality of service and network performance in
digital networks, including ISDNs".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI TR 102 276: "User Group; Users' Quality of Service Criteria for Internet Access in Europe".
[i.2] ETSI EG 202 057-1: "Speech Processing, Transmission and Quality Aspects (STQ); User related
QoS parameter definitions and measurements; Part 1: General".
[i.3] ETSI EG 202 057-2: "Speech Processing, Transmission and Quality Aspects (STQ); User related
QoS parameter definitions and measurements; Part 2: Voice telephony, Group 3 fax, modem data
services and SMS".
[i.4] ETSI EG 202 057-3: "Speech Processing, Transmission and Quality Aspects (STQ); User related
QoS parameter definitions and measurements; Part 3: QoS parameters specific to Public Land
Mobile Networks (PLMN)".
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3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
NOTE: Since the purpose of the present document is to formulate definitions for QoS parameters, these
definitions are given in the main body of the text and are not repeated here.
authentication: process of verifying a claimed identity to ensure that the stated identity of a user is correct
authorization: process of determining if the presenter of certain credentials is authorized to access a resource or make
use of a service
call: generic term to describe the establishment, utilization, and release of a connection (bearer path) or data flow
email: messages automatically passed from one computer user to another, often through computer networks and/or via
modems over telephone lines
File Transfer Protocol (FTP): protocol that allows users to copy files between their local system and any system they
can reach on the network
host: computer that provides client stations with access to files and printers as shared resources to a computer network
Internet: computer network consisting of a worldwide network of computer networks that use the TCP/IP network
protocols to facilitate data transmission and exchange
Internet access: making available of facilities and/or services for the purpose of providing an access to the public
Internet in order to provide a user with access to services or resources of the Internet
NOTE 1: The Internet access can be separated in two parts, the physical and the logical access.
The physical access provides a connection form the user's premises to, but not including, the POP
(normally a dial-up circuit or broadband link or leased line) whereas the logical access consist of the
setting up of an account that later on enables the user by a login process with the ability to access to the
services and resources of the Internet (normally by assigning an IP address).
NOTE 2: The physical and logical access may be provided by different service providers.
NOTE 3: The function of the physical access may be provided by several interconnected networks.
Internet Access Provider (IAP): organization that provides users with an Internet access
Internet Protocol (IP): main internetworking protocol used in the Internet. Used in conjunction with the Transfer
Control Protocol (TCP) to form TCP/IP
IP address: four-byte number uniquely defining each host on the Internet, usually written in dotted-decimal notation
with periods separating the bytes
EXAMPLE: 217.111.27.1 for IP Version 4.
login process: multi-step process which includes both authentication and authorization as well as other system start-up
tasks in order to provide a user with access to services or resources
public Internet: part of the Internet that is available to the general public
NOTE: The access is normally provided by Internet access and Internet service providers.
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physical access provider: organization that arranges the provision of physical access from the user's premises to the
POP
NOTE 1: Excluding, the POP.
NOTE 2: Usually a dial-up circuit or an ADSL link or leased line are used.
NOTE 3: The function of the physical access provider may be provided by several interconnected networks.
Public Telecommunications Network (PTN): telecommunications network used wholly or partly for the provision of
publicly available telecommunications services
router: device which forwards packets between networks
NOTE: The forwarding decision is based on network layer information and routing tables, often constructed by
routing protocols. An IP router forwards data based on IP source and destination addresses.
stakeholder: party having an interest in the level of quality of a service
telecommunications: technical process of sending, transmitting and receiving any kind of message in the form of signs,
voice, images or sounds by means of telecommunications systems
telecommunication services: provision of telecommunications and the provision of other additional services that are
closely related to the provision of telecommunications like e.g. billing, directory services
telecommunications systems: technical equipment or systems capable of sending, transmitting, switching, receiving,
steering or controlling as messages identifiable electromagnetic signals
user: individuals, including consumers, or organizations using or requesting publicly available telecommunications
services
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
DSL Digital Subscriber Line
FQDN Fully Qualified Domain Name
FTP File Transfer Protocol
GPRS General Packet Radio Service
GSM Global System for Mobile communications
IAP Internet Access Provider
ICMP Internet Control Message Protocol
IP Internet Protocol
kbit/s kilobit per second
NTP Network Termination Point
OS Operating System
PC Personal Computer
PING Packet InterNet Groper
PLMN Public Land Mobile Network
POP Point Of Presence
PTN Public Telecommunications Network
QoS Quality of Service
SMS Short Message Service
UMTS Universal Mobile Telecommunications System
WLAN Wireless Local Area Network
xDSL generic Digital Subscriber Line
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4 General consid
...