1、GSM GSM 03.14 November 1996 Version 5.0.0 Source: ETSI TC-SMG Reference: TS/SMG-O30314Q ICs: 33.020 Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM) GLOBAL SYSTEM FOR MOBILE COMiMIJNICATIONS Digital cellular telecommunications system; Support of Du
2、al Tone Multi-Frequency signalling (DTMF) via the GSM system (GSM 03.14) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p
3、=etsi, s=secretariat - Internet: secretariat8etsi.fr Tel.: +33 4 92 94 42 O0 - Fax: +33 4 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in ali media. 8 European Telecommunic
4、ations Standards Institute 1996. All rights reserved. STD-ETSI GSM 03-14-ENGL 1776 3L100855 0L57LL5 87b Page 2 GSM 03.14 version 5.0.0: November 1996 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you
5、 have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. STD-ETSI GSM 03*/4-ENGL L77b 3900855 OL59LLb 702 Page 3 GSM 03.14 version 5.0.0: November 1996 Contents Foreword . 5 1 Scope 7 2 Normative references 7 3 Abbrevi
6、ations . 7 4 Requirement 7 5 Cause of DTMF generation . 7 6 Support of DTMF across the air interface . 8 6.2 Specific 8 6.1 General 8 6.3 Tone durations . 8 7 Effect of Handover 12 7.1 Internal Handover 12 7.2 External Handover . 12 History 13 Page 4 GSM 03.14 version 5.0.0: November 1996 Blank Page
7、 Page 5 GSM 03.14 version 5.0.0: November 1996 Foreword This Global System for Mobile communications Technical Specification (GTS) has been produced by the Special Mobile Group (SMG) Technical Committee (TC) of the European Telecommunications Standards Institute (ETSI). This GTS defines the Disconti
8、nuous Reception (DRX) in the GSM system within the digital cellular telecommunications system. GTS are produced by TC-SMG to enable the GSM Phase 2+ specifications to become publicly available, prior to submission for the formal ETSI standards approval procedure to become European Telecommunications
9、 Standards (ETS). This ensures the earliest possible access to GSM Phase 2+ specifications for all Manufacturers, Network operators and implernentors of the Global System for Mobile communications. The contents of this GTS are subject to continuing work within TC-SMG and may change following formal
10、TC-SMG approval. Should TC-SMG modify the contents of this GTS it will then be republished by ETSI with an identifying change of release date and an increase in version number as follows: Version 5.x.y where: y the third digit is incremented when editorial only changes have been incorporated in the
11、specification; x the second digit is incremented for all other types of changes, .e. technical enhancements, corrections, updates, etc. STD-ETSI GSM 03.14-ENGL 377b 3400855 0359337 Li33 Page 6 GSM 03.14 version 5.0.0: November 1996 Blank Page STD-ETSI GSM 03-LLi-ENGL L99b 3400855 OL59L20 133 Page 7
12、GSM 03.14 version 5.0.0: November 1996 1 Scope This Global System for Mobile communications Technical Specification (GTS) describes how Dual Tone Multi Frequency (DTMF) signals are supported in the GSM system. 2 Normative references This GTS incorporates by dated and undated reference, provisions fr
13、om other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this GTS only when incorporated in it by amendment or revisio
14、n. For undated references, the latest edition of the publication referred to applies. 31 i41 GSM O1 .O4 (ETR 350): “Digital cellular telecommunication system (Phase 2+); Abbreviations and acronyms“. GSM 05.02 (ETS 300 908): “Digital cellular telecommunications system (Phase 2+); Multiplexing and mul
15、tiple access on the radio path“. CEPT TES 34-08: “Automatic sender for push-button multifrequency signalling“. CEPT TES 46-02: “Multifrequency signalling system to be used for push-button telephones“. 3 Abbreviations Abbreviations used in this GTS are listed in GSM 01.04. 4 Requirement Dual Tone Mul
16、ti Frequency (DTMF) is an inband one out of four plus one out of four signalling system, primarily used from terminal instruments in telecommunication networks. The international recommendations which apply are CEPT recommendations T/CS 34-08 (sender) and TES 46-02 (receiver) as detailed in subclaus
17、es 6.2 and 6.3. In the GSM system the MSC must support DTMF in the mobile to land direction. The support of this facility in the land to mobile direction is for further study. The use of DTMF is only permitted when the speech teleservice is being used or during the speech phase of alternate speech/d
18、ata and alternate speech/facsimile teleservices. The responsibility for checking this lies in the MS. 5 Cause of DTMF generation A user may cause a DTMF tone to be generated by depression of a key in the Mobile Station (MS). Optionally (on a MS basis) manufacturers of mobile equipment may choose to
19、allow DTMF to be controlled from a remote terminal. The man-machine interface questions associated with this facility are not discussed further in this GTS. STD-ETSI GSM 03.L4-ENGL L77b m 3400855 0L57L21 07T m Page 8 GSM 03.14 version 5.0.0: November 1996 6 Support of DTMF across the air interface 6
20、.1 General A message based signalling system is used across the GSM air interface. This requires that the relevant user action (e.g. a key depression) is interpreted by the MS as a requirement for a DTMF digit to be sent, this is converted by the MS into a message, the message is transmitted across
21、the air interface, and is converted by the MSC into a DTMF tone which is applied towards the network, which should then respond with an acknowledgement. When the user completes the key depression, an message that the DTMF sending should cease is also passed to the MSC, which again will respond with
22、an acknowledgement. 6.2 Specific The messages to be sent across the air interface will use the frame stealing mode of transmission. The messages when sent across the air interface should contain the following information: a) START DTMF : Containing the digit value (O-S,A,B,C,D,*,#); b) START DTMF AC
23、KNOWLEDGE: Containing the digit value (O-S,A,B,C,D,*,#) corresponding to the DTMF tone that the network applies towards the remote user; c) STOP DTMF : No further info; d) STOP DTMF ACKNOWLEDGE: No further info. Only a single digit will be passed in each START DTMF and START DTMF ACKNOWLEDGE message
24、. The messages will be passed transparently through the base station and interpreted at the MSC. On receipt of a START DTMF message, the MSC will connect the correct dual-tone to line. This tone will remain connected until either the call is cleared or a STOP DTMF message is received. As an operator
25、 option, the tone may be ceased after a pre-determined time whether or not a STOP DTMF message has a been received. The tones that are to be generated by the MSC are specified as follows: - - - Durations as specified below. Frequencies are defined in CEPT Recommendation TICS 34-08; Tone sending leve
26、ls are defined nationally; 6.3 Tone durations The minimum length of tone generated by the switch should be according to CEPT recommendation TICS 46-02. The minimum gap between two subsequent tones should be according to CEPT recommendation TICS 46-02. There is no defined maximum length to the tone,
27、which will normally cease when a STOP DTMF message is received from the MS. However, the operator may choose to put a pre-defined time limit on the duration of tones sent to line as mentioned in 6.2. Figures 1 to 3 show an overview of how the DTMF should operate. NOTE: The transmission time of the m
28、essages over the air interface on FACCH/F or FACCH/H, see GSM 05.02, ensures that the minimum length of tones and minimum gap between tones according to TICS 46-02 are fulfilled. STDnETSI GSM 03.LLi-ENGL L99b = 3400855 0159122 lOb Page 9 GSM 03.14 version 5.0.0: November 1996 MMI MS BSS MSC key X de
29、pressed - START DTMF (X) - START DTMF (X) START DTMF - I START DTMF ACKNOWLEDGE ACKNOWLEDGE (X)c ACKNOWLEDGE - Il Key X Released - STOPDTMF - STOPDTMF Tone OFF STOP DTMF ACKNOWLEDGE STOP DTMF ACKNOWLEDGE ACKNOWLEDGE - Ta TP Association time for DTMF Generator in MSC, implementation dependent but low
30、. Pre-determined maximum tone length, operator option. Figure 1: Single DTMF Transmission NOTE: If the Network operator implements the time limit option (see subclause 6.2), then the tone ends if the timer expires before the “Stop DTMF“ is received. _ STDSETSI GSM 03-14-ENGL 177b m 3400855 0157123 7
31、iZ = Page 10 GSM 03.14 version 5.0.0: November 1996 MMI MS BSS MSC key X depressed - START DTMF (X) key X released - START DTMF (X) START DTMF START DTMF ACKNOWLEDGE (X) ACKNOWLEDGE (X)* ACKNOWLEDGE - 4. -.-.- STOP DTMF - STOPDTMF ACKNOWLEDGE -.-.- STOP DTMF ACKNOWLEDGE b STOP DTMF ACKNOWLEDGE - Ta
32、Tone X ON II/ Ill Tp I 1 I II 1 Il Ill Tone OFF Ta TP Association time for DTMF Generator in MSC, implementation dependent but low. Pre-determined maximum tone length, operator option. Figure 2: Single DTMF Transmission, short key depression STD-ETSI GSM 03-Li-ENGL L77b 3400855 OL59L24 887 Page 11 G
33、SM 03.14 version 5.0.0: November 1996 MMI MS BSS MSC key X depressed - START DTMF X) key X released key Y depressed key Y released - START DTMF (X) _* - START DTMF START DTMF ACKNOWLEDGE (X ACKNOWLEDGE (X)* ACKNOWLEDGE - .-*-.-. STOP DTMF STOPDTMF r STOP DTMF ACKNOWLEDGE STOP DTMF ACKNOWLEDGE ACKNOW
34、LEDGE START DTMF (Y) START DTMF (Y) *. START DTMF START DTMF ACKNOWLEDGE (Y, ACKNOWLEDGE (Y)* ACKNOWLEDGE - STOP DTMF STOPDTMF STOP DTMF ACKNOWLEDGE STOP DTMF ACKNOWLEDGE - ACKNOWLEDGE 4 - Ta Tone X ON III Tp I 1 I II I II III Tone OFF _* 11 1 _+ - Ta Tone Y ON 11 1 III I II III Tone OFF Tp I 1 I II
35、 Ta TP Association time for DTMF Generator in MSC, implementation dependent but low. Pre-determined maximum tone length, operator option. Figure 3: Two single DTMF Transmissions, short key depressions _ I STD-ETSI GSM 03-LLI-ENGL 179b 3900855 0159125 715 W Page 12 GSM 03.14 version 5.0.0: November 1
36、996 7 Effect of Handover 7.1 Internal Handover There is unlikely to be any impact on DTMF due to internal handover. 7.2 External Handover Depending on the exact moment when handover occurs, there may be a slight possibility of cutting short a DTMF tone. For protocol reasons, in the case of an MSC receiving a STOP DTMF message when no tone is being sent, it should respond with an acknowledgement as usual. No other impact is seen due to external handover. History Document history November 1996 Publication of version 5.0.0 (based on version 4.1.1) ISBN 2-7437-1171-X Dpt lgal : Novembre 1996
