ETSI EN 300 903 V8.1.1 (2000-11)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Transmission planning aspects of the speech service in the GSM Public Land Mobile Network (PLMN) system (GSM 03.50 version 8.1.1 Release 1999)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 903 Version 8.1.1SIST EN 300 903 V8.1.1:2003en01-december-2003SIST EN 300 903 V8.1.1:2003SLOVENSKI
STANDARD



SIST EN 300 903 V8.1.1:2003



ETSI EN 300 903 V8.1.1 (2000-11)European Standard (Telecommunications series) Digital cellular telecommunications system (Phase 2+);Transmission planning aspectsof the speech service in the GSMPublic Land Mobile Network (PLMN) system(GSM 03.50 version 8.1.1 Release 1999)GLOBAL SYSTEM
FOR MOBILE COMMUNICATIONSR
SIST EN 300 903 V8.1.1:2003



ETSI ETSI EN 300 903 V8.1.1 (2000-11)2(GSM 03.50 version 8.1.1 Release 1999)
Reference REN/SMG-110350Q8R1 Keywords Digital cellular telecommunications system, Global System for Mobile communications (GSM) ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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© European Telecommunications Standards Institute 2000. All rights reserved.
SIST EN 300 903 V8.1.1:2003



ETSI ETSI EN 300 903 V8.1.1 (2000-11)3(GSM 03.50 version 8.1.1 Release 1999) Contents Intellectual Property Rights.7 Foreword.7 1 Scope.8 1.1 References.8 1.2 Abbreviations.10 1.3 Introduction.10 2 Network configurations.11 2.1 General.11 2.2 Model of the PLMN.11 2.3 Interfaces.11 2.4 Configurations of connections.12 2.4.1 General configurations of connections.12 2.4.2 Reference configurations to illustrate delay and echo control issues.12 2.5 4-wire circuits in the PLMN.12 3 Transmission performance.13 3.1 Overall Loss/Loudness ratings.13 3.1.1 Connections with handset MSs.14 3.1.2 Connections with handsfree MSs.14 3.1.3 Connections with headset MSs.14 3.2 Stability Loss.15 3.3 Delay.15 3.3.1 General.15 3.3.2 Sources of delay.15 3.3.2.1 Elements of the PLMN that cause delay.15 3.3.2.2 Elements of the PSTN that cause delay.16 3.3.3 Effects of delay.16 3.3.4 Allocation of delay to the PLMN.16 3.3.4.1 Allocation of delay to the PLMN when using a full rate system.16 3.3.4.2 Allocation of delay to the PLMN when using a half rate system.16 3.3.5 Delay of various network configurations.17 3.3.5.1 National and international connections with no echo control in the PSTN (reference configurations A).17 3.3.5.2 National and international connections with echo control in the PSTN (reference configurations B).17 3.3.5.3 Connections where re-routeing leads to a significant increase in transmission path length (reference configurations C).17 3.3.6 Delay related requirements on the MS.17 3.3.6.1 Full rate MS.17 3.3.6.2 Half rate MS.17 3.3.6.3 Handsfree MS.17 3.4 Echo.18 3.4.1 General.18 3.4.2 Electrical echo control in the PLMN (Reference configurations A).18 3.4.3 Acoustic echo control in the PLMN.18 3.4.3.1 Acoustic echo control in a handsfree MS.19 3.4.3.2 Acoustic echo control in a handset MS.19 3.4.3.3 Acoustic echo control in a headset MS.19 3.4.4 Interaction between tandem echo control devices (reference configurations B & C).19 3.5 Clipping.19 3.5.1 General.19 3.5.2 Properties of voice switches in the PLMN.19 3.5.3 Problems of tandem voice switching.20 3.6 Idle channel noise (handset and headset MS).20 3.6.1 Sending.20 3.6.2 Receiving.20 SIST EN 300 903 V8.1.1:2003



ETSI ETSI EN 300 903 V8.1.1 (2000-11)4(GSM 03.50 version 8.1.1 Release 1999) 3.7 Noise contrast.20 3.7.1 General.20 3.7.2 Elements of a PLMN which can cause noise contrast impairment.21 3.7.3 Reduction of noise contrast.21 3.7.3.1 Reduction of noise contrast by limiting the noise received by the microphone.21 3.7.3.1.1 Headset MS.21 3.7.3.1.2 Handset MS.22 3.7.3.1.3 Handsfree MS.22 3.7.3.2 Reduction of noise contrast by insertion of comfort noise.22 3.7.4 Consequence of the introduction of high comfort noise levels on other voice-operated devices.22 3.8 Sensitivity/frequency characteristics.22 3.8.1 Headset and Handset MSs.22 3.8.1.1 Sending.22 3.8.1.2 Receiving.23 3.8.2 Handsfree MS.23 3.8.2.1 Sending.23 3.8.2.2 Receiving.24 3.9 Distortion (handset and headset MS).24 3.9.1 Sending.24 3.9.2 Receiving.25 3.10 Sidetone (handset and headset MS).26 3.10.1 Sidetone loss.26 3.10.2 Sidetone distortion.26 3.11 Out-of-band signals.26 3.11.1 Discrimination against out-of-band input signals.26 3.11.1.1 Handset and headset MS.26 3.11.1.2 Handsfree MS.26 3.11.2 Spurious out-of-band signals.27 3.11.2.1 Handset and headset MS.27 3.11.2.2 Handsfree MS.27 3.12 Requirements for information tones.27 3.13 Crosstalk.27 3.13.1 Near and far end crosstalk.27 3.13.2 Go/return crosstalk.27 3.14 MS Ambient Noise Rejection.28 3.14.1 Full-Rate, (TCH-FS) MS Ambient Noise Rejection (handset MS).28 3.14.2 Full-Rate, (TCH-FS) MS Ambient Noise Rejection (handsfree MS).28 3.14.3 Half-Rate, (TCH-HS) MS and Dual-Rate (TCH-FS and TCH-HS) MS Ambient Noise Rejection.28 Annex A (informative): Considerations on the Acoustic Interface of the Mobile Station.37 A.1 Handsfree MS.37 A.2 Handset MS.37 A.3 Headset MS.37 A.4 Inter-reaction with DTX.37 Annex B (normative): Test considerations.38 B.1 Test signals.38 B.1.1 Sinusoidal signals.38 B.1.2 Artificial voice.38 B.2 Test signal levels.38 B.2.1 Sending.38 B.2.1.1 Handset and headset MSs.38 B.2.1.2 Office type Handsfree MS.38 B.2.1.3 Car type Handsfree MS.39 B.2.2 Receiving.39 B.3 Test rooms.39 B.3.1 Anechoic room.39 SIST EN 300 903 V8.1.1:2003



ETSI ETSI EN 300 903 V8.1.1 (2000-11)5(GSM 03.50 version 8.1.1 Release 1999) B.4 Test arrangement.40 B.4.1 Electro-acoustic equipment.40 B.4.2 Test arrangement for handsfree MS.41 B.4.2.1 Office type handsfree MS.41 B.4.2.2 Car type handsfree MS.41 B.4.2.3 Use of HATS for testing the receive characteristics of the car type handsfree MS.42 B.4.2.3.1 Equalization of HATS.42 B.4.2.3.2 Combination of ear signals.43 Annex C (normative): Transmission requirements testing.44 C.1 Loudness ratings.44 C.1.1 Sending Loudness Rating (SLR) – Handset MS.44 C.1.2 Sending Loudness Rating (SLR) – Handsfree MS.44 C.1.3 Receiving Loudness Rating (RLR) – Handset MS.44 C.1.4 Receiving Loudness Rating (RLR) - Handsfree MS.45 C.2 Idle Channel Noise.45 C.2.1 Sending.45 C.2.2 Receiving.45 C.3 Sensitivity/frequency characteristics.45 C.3.1 Sending - Handset MS.45 C.3.2 Sending – Handsfree MS.46 C.3.3 Receiving - Handset.46 C.3.4 Receiving - Handsfree.47 C.4 Distortion.47 C.4.1 Sending.47 C.4.2 Receiving.47 C.5 Variation of gain with input level.48 C.5.1 Sending.48 C.5.2 Receiving.48 C.6 Sidetone.48 C.6.1 Talker sidetone (STMR).48 C.6.2 Listener sidetone (LSTR).48 C.7 Sidetone distortion.49 C.8 Out-of-band signals.49 C.8.1 Discrimination against out-of-band input signal for handset and headset MS.49 C.8.2 Spurious out-of-band signals for handset and headset MS.49 C.8.3 Discrimination against out-of-band signals for handsfree MS.49 C.8.4 Spurious out-of-band emissions for handsfree MS.49 C.9 Acoustic echo loss.50 C.9.1 Acoustic echo loss – Handset MS.50 C.9.2 Acoustic echo loss – Handsfree MS.50 C.10 Delay for handsfree MS.51 C.10.1 Uplink.51 C.10.2 Downlink.51 C.10.3 Result.51 C.11 Ambient noise rejection.52 C.11.1 Full-Rate, (TCH-FS) MS Ambient Noise Rejection (handset MS).53 C.11.2 Full-Rate, (TCH-FS) MS Ambient Noise Rejection (handsfree MS).53 C.11.3 Half-Rate, (TCH-HS) MS and Dual-Rate (TCH-FS and TCH-HS) MS Ambient Noise Rejection.53 SIST EN 300 903 V8.1.1:2003



ETSI ETSI EN 300 903 V8.1.1 (2000-11)6(GSM 03.50 version 8.1.1 Release 1999) Annex D (normative): MS delay requirement definition.54 D.1 Full rate MS delay requirement definition.54 D.2 Half rate MS delay requirement definition.55 Annex E (informative): Adaptive gain control.56 Annex F (informative): Change Request History.57 History.58
SIST EN 300 903 V8.1.1:2003



ETSI ETSI EN 300 903 V8.1.1 (2000-11)7(GSM 03.50 version 8.1.1 Release 1999) 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://www.etsi.org/ipr). 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Special Mobile Group (SMG). The present document describes the transmission planning aspects pertaining to the speech service within the digital cellular telecommunications system (Phase 2+). The contents of the present document is subject to continuing work within SMG and may change following formal SMG approval. Should SMG modify the contents of the present document it will be re-released with an identifying change of release date and an increase in version number as follows: Version 8.x.y where: 8 indicates Release 1999 of GSM Phase 2+. x the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. y the third digit is incremented when editorial only changes have been incorporated in the specification.
National transposition dates Date of adoption of this EN: 24 November 2000 Date of latest announcement of this EN (doa): 28 February 2001 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 August 2001 Date of wi
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