1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T P.10/G.100 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 4 (06/2015) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Vocabulary and effects of transmission parameters on customer opinion of t
2、ransmission quality SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS International telephone connections and circuits Transmission planning and the E-model Vocabulary for performance and quality of service Amendment 4: New definitions for inclusion in Recommendation ITU-T P.10/
3、G.100 Recommendation ITU-T P.10/G.100 (2006) Amendment 4 ITU-T P-SERIES RECOMMENDATIONS TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Vocabulary and effects of transmission parameters on customer opinion of transmission quality Series P.10 Voice terminal characteristics Series P.30 P.300
4、 Reference systems Series P.40 Objective measuring apparatus Series P.50 P.500 Objective electro-acoustical measurements Series P.60 Measurements related to speech loudness Series P.70 Methods for objective and subjective assessment of speech quality Series P.80 P.800 Audiovisual quality in multimed
5、ia services Series P.900 Transmission performance and QoS aspects of IP end-points Series P.1000 Communications involving vehicles Series P.1100 Models and tools for quality assessment of streamed media Series P.1200 Telemeeting assessment Series P.1300 Statistical analysis, evaluation and reporting
6、 guidelines of quality measurements Series P.1400 Methods for objective and subjective assessment of quality of services other than voice services Series P.1500 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T P.10/G.100 (2006)/Amd.4 (06/2015) i Recommendation ITU-T
7、 P.10/G.100 Vocabulary for performance and quality of service Amendment 4 New definitions for inclusion in Recommendation ITU-T P.10/G.100 Summary Amendment 4 to Recommendation ITU-T P.10/G.100 provides new definitions for narrowband signals, wideband signals, super-wideband signals and fullband sig
8、nals. The existing definitions for normal-band telephony, wideband telephony, super-wideband telephony and fullband telephony remain unchanged. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T P.10 1980-11-21 11.1002/1000/7976 2.0 ITU-T P.10 1984-10-19 11.1002/1000/5883 3.0 I
9、TU-T P.10 1988-11-25 11.1002/1000/1715 4.0 ITU-T P.10 1993-03-12 XII 11.1002/1000/1716 5.0 ITU-T P.10 1998-12-03 12 11.1002/1000/4535 5.1 ITU-T P.10 (1998) Amd. 1 2003-11-13 12 11.1002/1000/7039 6.0 ITU-T P.10/G.100 2006-07-14 12 11.1002/1000/8857 6.1 ITU-T P.10/G.100 (2006) Amd. 1 2007-01-25 12 11.
10、1002/1000/9068 6.2 ITU-T P.10/G.100 (2006) Amd. 2 2008-07-14 12 11.1002/1000/9542 6.3 ITU-T P.10/G.100 (2006) Amd. 3 2011-12-14 12 11.1002/1000/11456 6.4 ITU-T P.10/G.100 (2006) Amd. 4 2015-06-29 12 11.1002/1000/12513 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the addres
11、s field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T P.10/G.100 (2006)/Amd.4 (06/2015) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommu
12、nications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommuni
13、cations on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedu
14、re laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecom
15、munication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of thes
16、e mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU d
17、raws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members
18、 or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not r
19、epresent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T P.10/G.10
20、0 (2006)/Amd.4 (06/2015) 1 Recommendation ITU-T P.10/G.100 Vocabulary for performance and quality of service Amendment 4 New definitions for inclusion in Recommendation ITU-T P.10/G.100 Introduction The following definitions are to be included in Recommendation ITU-T P.10/G.100 in correct alphabetic
21、al order at the respective correct places. Fullband signal A signal that has no significant signal components outside the range 10 Hz to 20 000 Hz. A fullband signal can be generated by applying the filter from Table 1 to an unfiltered source signal recorded without band limitation in a high quality
22、 recording environment. The application of sub-sonic and rumble filters to the source before filtering to fullband is allowed. NOTE A real fullband transmission system may limit the passband further. The low-pass filter definition does not emulate a fullband transmission system, channel, device or c
23、odec. Table 1 Minimum bandwidth filter definition to derive a fullband signal from a unfiltered source signal Frequency (Hz) Fullband gain (dB) 10 20 (max) 20 0 to 3 30 0 19 500 0 20 000 0 to 3 21 000 40 (max) 24 000 50 (max) Narrowband signal A signal that has no significant signal components outsi
24、de the range 20 Hz to 4 000 Hz. A narrowband signal can be created by applying the filter from Table 2 to a fullband signal as defined in this Amendment, the upper cut-off frequency of 3 800 Hz is due to a realistic interpolation low-pass when re-sampling to 8 000 Hz sampling frequency. The narrowba
25、nd signal can also be derived by applying the filter in Table 2 to a wideband or super-wideband signal as defined in this Amendment. NOTE A real narrowband transmission system may limit the passband further. The low-pass filter definition does not emulate a narrowband transmission system, channel, d
26、evice or codec. 2 Rec. ITU-T P.10/G.100 (2006)/Amd.4 (06/2015) Table 2 Minimum bandwidth filter definition to derive a narrowband signal from a fullband signal Frequency (Hz) Narrowband gain (dB) 20 0 3 700 0 3 800 0 to 3 4 000 40 (max.) Super-wideband signal A signal that has no significant signal
27、components outside the range 20 Hz to 14 000 Hz. A super-wideband signal can be generated by applying the filter from Table 3 to a fullband signal. NOTE A real super-wideband transmission system may limit the passband further. The low-pass filter definition does not emulate a super-wideband transmis
28、sion system, channel, device or codec. Table 3 Minimum bandwidth filter definition to derive a super-wideband signal from a fullband signal Frequency (Hz) Super-wideband gain (dB) 20 0 13 500 0 14 000 0 to 3 15 000 40 (max) Wideband signal A signal that has no significant signal components outside t
29、he range 20 Hz to 8 000 Hz. A wideband signal can be generated by applying the filter from Table 4 to a fullband signal, the upper cut-off frequency of 7 600 Hz is due to a realistic interpolation low-pass when re-sampling to 16 000 Hz sampling frequency. The wideband signal can also be derived by a
30、pplying the filter in Table 2 to a super-wideband signal as defined in this Amendment. NOTE A real wideband transmission system may limit the passband further. The low-pass filter definition does not emulate a wideband transmission system, channel, device or codec. Table 4 Minimum bandwidth filter d
31、efinition to derive a wideband signal from a fullband signal Frequency (Hz) Wideband gain (dB) 20 0 7 400 0 7 600 0 to 3 8 000 40 (max) ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 Transmission
32、 planning and the E-model G.100G.109 General Recommendations on the transmission quality for an entire international telephone connection G.110G.119 General characteristics of national systems forming part of international connections G.120G.129 General characteristics of the 4-wire chain formed by
33、the international circuits and national extension circuits G.130G.139 General characteristics of the 4-wire chain of international circuits; international transit G.140G.149 General characteristics of international telephone circuits and national extension circuits G.150G.159 Apparatus associated wi
34、th long-distance telephone circuits G.160G.169 Transmission plan aspects of special circuits and connections using the international telephone connection network G.170G.179 Protection and restoration of transmission systems G.180G.189 Software tools for transmission systems G.190G.199 GENERAL CHARAC
35、TERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH ME
36、TALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE
37、AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 Printed in Switzerland Geneva, 2015 SERIES OF ITU-T RECOMMENDATIONS S
38、eries A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Aud
39、iovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Environment and ICTs, climate change, e-waste, energy efficiency; constr
40、uction, installation and protection of cables and other elements of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Serie
41、s P Terminals and subjective and objective assessment methods Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation networks Series Z Languages and general software aspects for telecommunication systems
