SIST-TP TR 101 329-1 V3.1.2:2004

SLOVENSKI STANDARD
01-april-2004
Harmonizacija telekomunikacij in internetnega protokola prek omrežij (TIPHON), 3.
izdaja - Kakovost storitve od konca do konca v sistemih TIPHON - 1. del: Splošni
vidiki kakovosti storitve (QoS)
Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON)
Release 3; End-to-end Quality of Service in TIPHON systems; Part 1: General aspects of
Quality of Service (QoS)
Ta slovenski standard je istoveten z: TR 101 329-1 Version 3.1.2
ICS:
33.020 Telekomunikacije na splošno Telecommunications in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Technical Report
Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON) Release 3;
End-to-end Quality of Service in TIPHON systems;
Part 1: General aspects of Quality of Service (QoS)

2 ETSI TR 101 329-1 V3.1.2 (2002-01)

Reference
RTR/TIPHON-05007 [2]
Keywords
internet, telephony, quality
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© European Telecommunications Standards Institute 2002.
All rights reserved.
ETSI
3 ETSI TR 101 329-1 V3.1.2 (2002-01)
Contents
Intellectual Property Rights.4
Foreword.4
Introduction .5
1 Scope.6
2 References.6
3 Definitions and abbreviations.6
3.1 Definitions.6
3.2 Abbreviations.7
4 Introduction to end-to-end Quality of Service (QoS).8
4.1 Main QoS parameters influenced by TIPHON systems .8
4.1.1 Call set-up quality.8
4.1.2 Call quality.8
4.1.3 Conversational speech quality .8
4.2 Further QoS parameters.9
4.3 TIPHON specific QoS relevant factors .9
4.3.1 Delay Jitter.9
4.3.2 Jitter buffers.10
4.3.3 Jitter Buffer Implementations .11
4.3.4 Jitter buffer monitoring capabilities.12
4.4 Physical components based on which a TIPHON service may be provided .12
4.4.1 IP terminal.12
4.4.2 IP access network .13
4.4.3 IP backbone.13
4.4.4 IWF (gateway/gatekeeper).13
4.4.5 SCN.13
4.4.6 Voice terminal connected to the SCN.14
5 Depiction of each TIPHON scenario by its reference connection.15
5.1 Reference connection for TIPHON scenario #0.15
5.2 Reference connection for TIPHON scenario #1.16
5.3 Reference connection for TIPHON scenario #2.16
5.4 Reference connection for TIPHON scenario #3.17
5.5 Reference connection for TIPHON scenario #4.17
Annex A: Bibliography.18
History .19

ETSI
4 ETSI TR 101 329-1 V3.1.2 (2002-01)
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 Technical Report (TR) has been produced by ETSI Project Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON).
The present document is part 1 of a multi-part deliverable covering End-to-end Quality of Service in TIPHON systems,
as identified below:
TR 101 329-1: "General aspects of Quality of Service (QoS)";
TS 101 329-2: "Definition of speech Quality of Service (QoS) classes";
TS 101 329-3: "Signalling and control of end-to-end Quality of Service (QoS)";
TS 101 329-5: "Quality of Service (QoS) measurement methodologies";
TR 101 329-6: "Actual measurements of network and terminal characteristics and performance parameters in
TIPHON networks and their influence on voice quality";
TR 101 329-7: "Design guide for elements of a TIPHON connection from an end-to-end speech transmission
performance point of view".
Quality of Service aspects of TIPHON Release 4 and 5 Systems will be covered in TS 102 024 and
TS 102 025 respectively (see Bibliography), and more comprehensive versions of the Release 3 documents listed above
will be published as part of Release 4 and 5 as work progresses.
ETSI
5 ETSI TR 101 329-1 V3.1.2 (2002-01)
Introduction
The present document forms one of a series of technical specifications and technical reports produced by TIPHON
Working Group 5addressing Quality of Service (QoS) in TIPHON Systems. The structure of this work is illustrated in
figure 1.
Introduction Definition of 5
Speech Classes
TR 101 329-1 TS 101 329-2
General Speech
QoS
Aspects
of QoS Classes
SPEC
REPORT
Generic QoS
Specific Aspects of QoS
TS 101 329-5 TR 101 329-6 TR 101 329-7
TS 101 329-3
QoS Measure- Actual Design
Control ment Test Guidelines
Methods Results
SPEC REPORT REPORT
SPEC
QoS signalling Measurement Repository of Useful info for
requirements methodologies real test results designers

Figure 1: Structure of TIPHON QoS Documentation for Release 3
ETSI
6 ETSI TR 101 329-1 V3.1.2 (2002-01)
1 Scope
The present document presents QoS related background information for IP networks that provide voice telephony in
accordance with all TIPHON scenarios.
It contains:
- a depiction of each TIPHON scenario by its reference connection;
- an overview of the physical components based on which a TIPHON service may be provided.
2 References
For the purposes of this Technical Report (TR) the following references apply:
[1] ETSI EG 202 306: "Transmission and Multiplexing (TM); Access networks for residential
customers".
[2] ETSI TS 101 312: "Telecommunications and Internet Protocol Harmonization Over Networks
(TIPHON); Network architecture and reference configurations; Scenario 1".
[3] ETSI TS 101 329-2: "Telecommunications and Internet Protocol Harmonization over Networks
(TIPHON); End to End Quality of Service in TIPHON Systems; Part 2: Definition of Quality of
Service (QoS) Classes".
[4] ETSI TS 101 329-5: "Telecommunications and Internet protocol Harmonization Over Networks
(TIPHON) Release 3; Technology Compliance Specification; Part 5: Quality of Service (QoS)
measurement methodologies".
[5] ITU-T Recommendation E.600: "Terms and definitions of traffic engineering".
[6] ITU-T Recommendation G.103: "Hypothetical reference connections".
[7] ITU-T Recommendation G.107: "The E-Model, a computational model for use in transmission
planning".
[8] ITU-T Recommendation G.177: "Transmission planning for voiceband services over hybrid
Internet/PSTN connections".
[9] ITU-T Recommendation I.350: "General aspects of quality of service and network performance in
digital networks, including ISDNs".
[10] ITU-T Recommendation P.310: "Transmission characteristics for telephone-band (300-3 400 Hz)
digital telephones".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
end-to-end delay jitter: estimate of the statistical variance of the voice frames interarrival time measured in
milliseconds and expressed as an unsigned integer
NOTE: The end-to-end delay jitter is defined to be the mean deviation (smoothed absolute value) of the
difference in voice frame spacing at the receiver compared to the sender for a pair of voice frames.
ETSI
7 ETSI TR 101 329-1 V3.1.2 (2002-01)
interarrival jitter: estimate of the statistical variance of the RTP data packet interarrival time measured in milliseconds
and expressed as an unsigned integer
NOTE: The interarrival jitter is defined to be the mean deviation (smoothed absolute value) of the difference in
packet spacing at the receiver compared to the sender for a pair of packets.
jitter amplitude: absolute difference in arrival time between the fastest and the slowest data packet or voice frame
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ADSL Asymmetric Digital Subscriber Line
BRAN Broadband Radio Access Networks
FDM Frequency Division Multiplex
GSM Global System for Mobile communications
ISDN Integrated Services Digital Network
IP Internet Protocol
ITU International Telecommunication Union
ITU-T ITU Telecommunication Standardization Sector (former CCITT)
IWF InterWorking Function
LAN Local Area Network
PSTN Public Switched Telephone Network
QoS Quality of Service
RTP Real Time Protocol
SCN Switched Communications Network
TDM Time Division Multiplex
UMTS Universal Mobile Telecommunications System
VDSL Very High Speed Digital Subscriber Line
xDSL ADSL, VDSL and other Digital Subscriber Line Techniques
ETSI
8 ETSI TR 101 329-1 V3.1.2 (2002-01)
4 Introduction to end-to-end Quality of Service (QoS)
4.1 Main QoS parameters influenced by TIPHON systems
End-to-end QoS in a TIPHON system is characterized in the TIPHON QoS documentation under two broad headings:
• call set-up quality; and
• call quality.
4.1.1 Call set-up quality
Call set-up quality is mainly characterized by the call set-up time which is perceived by the user as the responsiveness
of the service. Call set-up time is the time elapsed from the end of the user interface command by the caller (keypad
dialling, E-mail alias typing, etc.) to the receipt by the caller of a meaningful progress information. The present
document provides the exact definition of the various call set-up times for use in TIPHON systems, whereas ITU-T
Recommendation E.600 [5] provides more information on the definition of post-dialling delay in SCN systems.
4.1.2 Call quality
Call quality is characterized by the overall transmission quality rating R. Overall transmission quality rating (R)
describes the full acoustic-to-acoustic (mouth to
...