1、 ETSI TS 1Digital cellular telecoBasMobile-services SwitcLay(3GPP TS 48.0TECHNICAL SPECIFICATION148 004 V13.0.0 (2016communications system (Phaase Station System - ching Centre (BSS - MSC) inayer 1 specification .004 version 13.0.0 Release 13GLOBAL SYSTEMOBILE COMMUN16-01) hase 2+); interface; 13) T
2、EM FOR ICATIONSRETSI ETSI TS 148 004 V13.0.0 (2016-01)13GPP TS 48.004 version 13.0.0 Release 13Reference RTS/TSGG-0248004vd00 Keywords GSM 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 Associat
3、ion 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 v
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7、cept as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. All rights reserved
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9、 GSM Association. ETSI ETSI TS 148 004 V13.0.0 (2016-01)23GPP TS 48.004 version 13.0.0 Release 13Intellectual 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 availa
10、ble 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
11、 (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 become,
12、 essential to the present document. Foreword This Technical Specification (TS) has been produced 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 in
13、terpreted as being references to the corresponding ETSI deliverables. The cross reference between 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
14、 not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 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 148 004 V13.0.0 (201
15、6-01)33GPP TS 48.004 version 13.0.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Abbreviations . 5g34 Layer 1 Specification 6g3Annex A (informative): Change History 7g3History 8g3ETSI ETSI TS 148 004 V13.0.0 (2
16、016-01)43GPP TS 48.004 version 13.0.0 Release 13Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG mod
17、ify the contents of the present document, it will be re-released by the TSG with an identifying 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 or greater indicates TSG
18、 approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 148 004 V13.0.0 (2016-01)
19、53GPP TS 48.004 version 13.0.0 Release 131 Scope The present document defines the structure of the physical layer (layer 1) of the BSS-MSC interface for supporting traffic channels. Use of the physical layer for supporting Signalling System No.7 signalling links is covered in Technical Specification
20、 3GPP TS 48.006. The physical layer is the lowest layer in the OSI Reference Model and it supports all functions required for transmission of bit streams on the physical medium. For the present document only digital transmission will be considered, the use of analogue transmission is a national conc
21、ern. 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.) or non-specific. For a specific reference, subse
22、quent 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 in the same Release as the present document. 1 3GPP TR 2
23、1.905: “Vocabulary for 3GPP Specifications“. 2 ITU-T Recommendation G.705: “Characteristics of plesiochronous digital hierarchy (PDH) equipment functional blocks“. 3 ITU-T Recommendation G.709: “Interfaces for the Optical Transport Network (OTN)“. 4 ITU-T Recommendation G.711: “Pulse Code Modulation
24、 (PCM) of voice frequencies“. 5 ITU-T Recommendation G.732: “Characteristics of primary PCM multiplex equipment operating at 2 048 kbit/s“. 6 3GPP TS 48.006: “Signalling transport mechanism specification for the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface“. 7 ANSI T1
25、.102-1993: “Digital Hierarchy - Electrical Interface“. 8 ANSI T1.403.01-1999: “Title: Network and Customer Installation Interfaces - (ISDN) Primary Rate Layer 1 Electrical Interfaces Specification (Includes revision of ANSI T1.408-1990 and partial revision of ANSI T1.403-1995)“. 9 ANSI T1.107-1995:
26、“Digital Hierarchy - Formats Specifications“. 10 3GPP TS 48.020: “Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface“. 3 Abbreviations For the purposes of the present document, the abbreviations gieven in 3GPP TR 21.905 1 apply. ETSI ETSI TS 148 004 V13
27、.0.0 (2016-01)63GPP TS 48.004 version 13.0.0 Release 134 Layer 1 Specification All ITU-T recommendations referred to are Blue Book. Layer 1 shall utilise digital transmission: - at a rate of 2 048 kbit/s with a frame structure of 32 x 64kbit/s time slots, as specified in ITU-T Recommendation G.705 c
28、lause 3 for E1 interface; or - at a rate of 1 544 kbit/s with a frame structure of 24 x 64 kbit/s time slots, as specified in T1.102 specification for T1 interface. Therefore the physical/electrical characteristics are defined in ITU-T Recommendation G.703 for E1 interface or ANSI T1.403 specificati
29、on T1 interface. The functional characteristics are defined in ITU-T Recommendation G.732 clauses 2 and 3 for E1 interface or ANSI T1.107 specification for T1 interface. Fault conditions should be treated in accordance with ITU-T Recommendation G.732 clause 4 for E1 interface or ANSI T1.403 specific
30、ation for T1 interface. Speech encoding shall be the A-law or Mu-law (for North America) as defined in ITU-T Recommendation G.711. The idle pattern must be transmitted on every timeslot that is not assigned to a channel, and to every timeslot of a channel that is not allocated to a call. The idle pa
31、ttern shall be 01010100 in ITU-T based systems and 01111111 in ANSI based systems. Synchronisation at the BSS for the transmitted 2 048/1544 kbit/s bit stream shall be derived from the received 2 048/1 544 kbit/s bit stream. Data encoding is covered in Technical Specification 3GPP TS 48.020. NOTE: A
32、 predetermined number of the 56/64kbit/s time slots may be used for signalling, to one or more base station systems. 56kbit/s is applicable to T1 interface only. ETSI ETSI TS 148 004 V13.0.0 (2016-01)73GPP TS 48.004 version 13.0.0 Release 13Annex A (informative): Change History TSG # TSG Doc. CR Rev Subject/Comment New version January 2016 - - - Release 13 version created based on v12.0.0 13.0.0 ETSI ETSI TS 148 004 V13.0.0 (2016-01)83GPP TS 48.004 version 13.0.0 Release 13History Document history V13.0.0 January 2016 Publication
