1、 ETSI TS 123 014 V14.0.0 (2017-03) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Support of Dual Tone Multi-Frequency (DTMF) signalling (3GPP TS 23.014 version 14.0.0 Release 14) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUN
2、ICATIONSRETSI ETSI TS 123 014 V14.0.0 (2017-03)13GPP TS 23.014 version 14.0.0 Release 14Reference RTS/TSGC-0123014ve00 Keywords GSM,UMTS 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 Associatio
3、n but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print ver
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9、d by the GSM Association. ETSI ETSI TS 123 014 V14.0.0 (2017-03)23GPP TS 23.014 version 14.0.0 Release 14Intellectual 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 publicl
10、y 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 We
11、b server (https:/ipr.etsi.org/). 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
12、 become, essential to the present document. Foreword The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference betwe
13、en GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2
14、of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 123 014 V14.0.0 (2017-03)33GPP TS 23.014 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword
15、 . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Abbreviations . 5g34 Requirement . 5g35 Cause of DTMF generation 6g36 Support of DTMF across the air interface 6g36.1 General . 6g36.2 Specific . 6g36.3 Tone durations 7g37 Effect of Handover . 10g37.1 Internal Handover . 10
16、g37.2 External Handover 11g3Annex A (informative): Change history . 12g3History 13g3ETSI ETSI TS 123 014 V14.0.0 (2017-03)43GPP TS 23.014 version 14.0.0 Release 14Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document defi
17、nes Dual Tone Multi Frequency (DTMF) signalling within the 3GPP system. The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of this TS, it will be re-released by the TSG with an identifyin
18、g change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 Indicates TSG approved document under change control. y the second digit is incremented for all changes of substance,
19、i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the specification; ETSI ETSI TS 123 014 V14.0.0 (2017-03)53GPP TS 23.014 version 14.0.0 Release 141 Scope The present document describes how Dual Tone Multi
20、Frequency (DTMF) signals are supported in the 3GPP system. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version number
21、, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that docum
22、ent in the same Release as the present document. 1 Void. 1a 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 45.002: “Multiplexing and Multiple Access on the Radio Path“. 3 ETSI ES 201 235-1, v1.1.1: “Specification of Dual Tone Multi-Frequency (DTMF); Transmitters and Receivers; Part
23、1: General“. 4 ETSI ES 201 235-2, v1.2.1: “Specification of Dual Tone Multi-Frequency (DTMF); Transmitters and Receivers; Part 2: Transmitters“. 5 ETSI ES 201 235-3, v1.2.1: “Specification of Dual Tone Multi-Frequency (DTMF); Transmitters and Receivers; Part 3: Receivers“. 6 ITU-T Recommendation H.2
24、45: “Control protocol for multimedia communication“ 3 Abbreviations For the purposes of the present document, the abbreviations used in the present document are listed in 3GPP TR 21.905 1a. 4 Requirement Dual Tone Multi Frequency (DTMF) is an inband one out of four plus one out of four signalling sy
25、stem, primarily used from terminal instruments in telecommunication networks. The international recommendations which apply are ETSI ES 201 235 3, 4, 5 as detailed in subclauses 6.2 and 6.3. For PCS 1900 for North America the Standards which apply are operator specific. In the 3GPP system the MSC mu
26、st 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/data and alternate speech/facsimile telese
27、rvices; the DTMF is transmitted across the radio interface as specified in subclause 6 of this specification; and - during a multimedia call; the DTMF is transmitted across the radio interface using the H.245 UserInputIndication message (see ITU-T H.245 6). This is transparent for the MSC. ETSI ETSI
28、 TS 123 014 V14.0.0 (2017-03)63GPP TS 23.014 version 14.0.0 Release 14The 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 equ
29、ipment may choose to allow DTMF to be controlled from a remote terminal. The man-machine interface questions associated with this facility are not discussed further in the present document. 6 Support of DTMF across the air interface 6.1 General A message based signalling system is used across the 3G
30、PP system 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 the air interface, and is converted by the MSC into a DTMF
31、 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 an acknowledgement. 6.2 Specific The messages to be sent a
32、cross 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 (0-9,A,B,C,D,*,#); b) START DTMF ACKNOWLEDGE: Containing the digit value (0-9,A,B,C,D,*,#) cor
33、responding 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. The messages will be passed transparently through the base
34、 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 option, the tone may be ceased after a pre-determined time
35、whether or not a STOP DTMF message has been received. ETSI ETSI TS 123 014 V14.0.0 (2017-03)73GPP TS 23.014 version 14.0.0 Release 14The tones that are to be generated by the MSC are specified as follows: - Frequencies are defined in ETSI ES 201 235-1 3 (for PCS 1900 for North America this is operat
36、or specific); - Tone sending levels are defined in ETSI ES 201 235-2 4 (for PCS 1900 for North America this is operator specific); - Durations as specified below. 6.3 Tone durations The network shall ensure that the minimum length of tone and the minimum gap between two subsequent tones according to
37、 ETSI ES 201 235-2 4 is achieved. For PCS 1900 for North America this is operator specific. NOTE 1: In ETSI ES 201 235-2 4 the minimum duration of a DTMF tone is 65 ms. NOTE 2: In ETSI ES 201 235-2 4 the minimum gap between DTMF tones is 65 ms. There is no defined maximum length to the tone, which w
38、ill 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 clause 6.2. Figures 1 to 3 show an overview of how the DTMF should operate. Ta Association time for DTMF Generat
39、or in MSC, implementation dependent but low. Tp Pre-determined maximum tone length, operator option. T1 Minimum length of tone. 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. Figure 1: Sing
40、le DTMF Transmission ETSI ETSI TS 123 014 V14.0.0 (2017-03)83GPP TS 23.014 version 14.0.0 Release 14Ta Association time for DTMF Generator in MSC, implementation dependent but low. Tp Pre-determined maximum tone length, operator option. T1 Minimum length of tone. Figure 2: Single DTMF Transmission,
41、Short Key Press ETSI ETSI TS 123 014 V14.0.0 (2017-03)93GPP TS 23.014 version 14.0.0 Release 14Ta Association time for DTMF Generation in MSC, implementation dependant but low. Tp Pre-determined maximum tone length, operator option. T2 Minimum gap between tones. Figure 3: Two Single DTMF Transmissio
42、n ETSI ETSI TS 123 014 V14.0.0 (2017-03)103GPP TS 23.014 version 14.0.0 Release 14T1 Minimum length of tones T2 Minimum gap between tones. Figure 4: Two Single DTMF Transmissions, Short Gap Between Key Presses 7 Effect of Handover 7.1 Internal Handover There is unlikely to be any impact on DTMF due
43、to internal handover. ETSI ETSI TS 123 014 V14.0.0 (2017-03)113GPP TS 23.014 version 14.0.0 Release 147.2 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
44、 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. ETSI ETSI TS 123 014 V14.0.0 (2017-03)123GPP TS 23.014 version 14.0.0 Release 14Annex A (informative): Change history Change history TSG CN# Spec Version CR
45、 New Version Subject/Comment Apr 1999 3GPP TS 03.14 7.0.0 Transferred to 3GPP CN1 CN#03 23.014 3.0.0 Approved at CN#03 CN#06 23.014 3.0.0 001r1 R99 3.1.0 Clarification of DTMF procedure CN#11 23.014 3.1.0 Rel-4 4.0.0 TSG CN#11 decided to issue this specification as Release 4 on 03-2001 NP-16 23.014
46、4.0.0 Rel-5 5.0.0 TSG CN#16 decided to issue this specification as part of release 5 on June 2002. ETSI/MCC updated this version with references and editorials. NP-17 NP-020365 23.014 N1-021655 (wrongly used N1-021654 inside the CR itself) 5.0.0 006 Rel-5 5.1.0 Dual Tone Multi-Frequency signalling :
47、 Support in the whole 3GPP system, and editorial modifications. Cat A CR NP-26 23.014 5.1.0 007 Rel-6 6.0.0 Introduction of new references for DTMF 6.0.0 7.0.0 Upgraded to Rel-7 (MCC) CP-42 23.014 7.0.0 008r1 Rel-8 8.0.0 DTMF transmission during multimedia call CP-46 8.0.0 Rel-9 9.0.0 Upgraded to Re
48、l-9 (MCC) CP-51 9.0.0 Rel-10 10.0.0 Upgraded to Rel-10 (MCC) CP-57 10.0.0 Rel-11 11.0.0 Upgraded to Rel-11 (MCC) CP-65 11.0.0 Rel-12 12.0.0 Upgraded to Rel-12 (MCC) CP-70 12.0.0 Rel-13 13.0.0 Upgraded to Rel-13 (MCC) Change history Date Meeting TDoc CR Rev Cat Subject/Comment New version 2017-03 CT-75 - - - Update to Rel-14 version (MCC) 14.0.0 ETSI ETSI TS 123 014 V14.0.0 (2017-03)133GPP TS 23.014 version 14.0.0 Release 14History Document history V14.0.0 March 2017 Publication
