1、 ETSI TS 123 014 V15.0.0 (2018-06) 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 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUN
2、ICATIONSRETSI ETSI TS 123 014 V15.0.0 (2018-06)13GPP TS 23.014 version 15.0.0 Release 15Reference RTS/TSGC-0123014vf00 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、ed and owned by the GSM Association. ETSI ETSI TS 123 014 V15.0.0 (2018-06)23GPP TS 23.014 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these ess
10、ential 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 updat
11、es are available on the ETSI Web 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 serve
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13、, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produ
14、ced by ETSI 3rd Generation Partnership Project (3GPP). 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 bet
15、ween 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.
16、2 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 V15.0.0 (2018-06)33GPP TS 23.014 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Forewo
17、rd . 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 .
18、10g37.2 External Handover 11g3Annex A (informative): Change history . 12g3History 13g3ETSI ETSI TS 123 014 V15.0.0 (2018-06)43GPP TS 23.014 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The present document defines D
19、ual 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 identifying cha
20、nge 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, i.e.
21、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 V15.0.0 (2018-06)53GPP TS 23.014 version 15.0.0 Release 151 Scope The present document describes how Dual Tone Multi Frequ
22、ency (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, etc
23、.) 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 document i
24、n 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 1: Ge
25、neral“. 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.245: “
26、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 system,
27、 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 must su
28、pport 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 teleservice
29、s; 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. The responsibi
30、lity for checking this lies in the MS. ETSI ETSI TS 123 014 V15.0.0 (2018-06)63GPP TS 23.014 version 15.0.0 Release 155 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 equipmen
31、t 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 3GPP sy
32、stem 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 tone
33、 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 across
34、 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,*,#) correspo
35、nding 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 stat
36、ion 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 wheth
37、er or not a STOP DTMF message has been received. ETSI ETSI TS 123 014 V15.0.0 (2018-06)73GPP TS 23.014 version 15.0.0 Release 15The 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 operator sp
38、ecific); - 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 ETSI
39、 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 will n
40、ormally 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 Generator in
41、 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: Single DT
42、MF Transmission ETSI ETSI TS 123 014 V15.0.0 (2018-06)83GPP TS 23.014 version 15.0.0 Release 15Ta 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, Short
43、 Key Press ETSI ETSI TS 123 014 V15.0.0 (2018-06)93GPP TS 23.014 version 15.0.0 Release 15Ta 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 Transmission ETS
44、I ETSI TS 123 014 V15.0.0 (2018-06)103GPP TS 23.014 version 15.0.0 Release 15T1 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 to in
45、ternal handover. ETSI ETSI TS 123 014 V15.0.0 (2018-06)113GPP TS 23.014 version 15.0.0 Release 157.2 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
46、 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 V15.0.0 (2018-06)123GPP TS 23.014 version 15.0.0 Release 15Annex A (informative): Change history Change history TSG CN# Spec Version CR New
47、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 4.0.0
48、 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 : Supp
49、ort 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 Rel-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
