1、Released: 10 May, 1994 GSM 03.45 Version: 4.4.0 Source: ETSI TC-SMG Reference: GSM 03.45 UDC: 621.386.21 Key words: European digital cellular telecommunications system, Global System for Mobile communications (GSM) European digital cellular telecommunications system (Phase 2); Technical realization
2、of facsimile group 3 transparent (GSM 03.45) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: 06921 Sophia Antipolis Cedex - FRANCE Office address: Route des Lucioles - Sophia Antipolis - Vaibonne - FRANCE Tel.: + 33 92 94 42 O0 - Fax: + 33 93 65 47 16 European T
3、elecommunications Standards Institute 1 994. All rights reserved. No part may be reproduced except as authorised by written permission. The copyright and the foregoing restriction on reproduction extend to all media in which the information may be embodied. Page 2 GSM 03.45 version 4.4.0 _ Whilst ev
4、ery care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Standards Approval Dept.“ at the address shown on the title page. 3404583 OLL6800 133
5、 Page 3 GSM 03.45 version 4.4.0 Contents . Foreword 5 0.1 SCOPE . 7 0.2 Normative references . 7 0.3 Definitions and abbreviations 8 1 SERVICE DEFINITION 8 2 NETWORK ARCHITECTURE . 9 REFERENCE CONFIGURATION AT THE MOBILE STATION 10 GSM Facsimile Machine functionality 11 4 CONNECTION TYPES 12 Informa
6、tion transfer protocol model 13 Interactions with T.30 14 4.2.1.1 Message detection . 15 4.2.2 Speed conversion for BCS phases 15 Group 1 and Group 2 support 16 4.2.3.3 Non-standard facilities . 16 7200 bit/s Facsimile Document Transfer 16 4.2.3.5 Procedure interrupts . 17 4.2.4 Speed checking . 17
7、Radio Channel Modification Procedures . 17 3 3.1 3.2 Fax Adaptor functionality 11 4.1 4.2 4.2.1 Link control strategy 14 4.2.3 Compatibility checking . 16 2400 bit/s handshaking . 16 4.2.3.1 4.2.3.2 4.2.3.4 4.3 4.3.1 4.3.2 In Call Modification (ICM) . 17 Channel Mode Modify (CMM) . 18 5 USE OF TERMI
8、NAL ADAPTATION FUNCTIONS 19 Standard TAFs for synchronous services . 19 Specific TAFs for facsimile service 19 5.2.1 Working principle 19 Basic protocol structure . 20 5.2.2.1 Frame formats . 21 5.2.3 Protocol description . 21 5.2.3.1 IDLE state . 22 5.2.3.2 BCS-REC state 22 5.2.3.3 BCS-TRA state .
9、22 5.2.3.4 MSG-REC state 22 5.1 5.2 5.2.2 5.2.3.5 MSG-TRA state 23 5.2.4 DCS and TCF processing 23 5.2.5 DCN (disconnect) frame . 24 5.2.6 Clocking . 24 Timeouts 5.2.7 25 5.3.1 Frame detection 25 5.3.2 Message phase . 25 5.3.3 5.3 Specific TAFs for facsimile service (T.30/A) . 25 Additional CMM requ
10、est . 25 6 SIGNALING ASPECTS 26 Handling of Tonal Signals . . . .26 Call establishment . . . , - . . , . .26 6.2.1 Mobile Terminated Call - Speech then Fax . 26 6.2.2 Mobile Terminated Call - Auto answer , . 27 6.2.3 Mobile Originated call - Speech then Fax i 27 6.2.4 Mobile Originated call - Auto c
11、alling . . . . . 28 6.2.5 Mobile Originated call - Manual calling . . . . 28 Call release . 28 6.1 6.2 6.3 7 . INTERWORKING TO FIXED NETWORKS . 29 7.1 Interworking to PSTN , . . . . . 29 7.2 Interworking to ISDN . 30 Appendix I. (Informative) Protocol entities from CCITT T.30 and T.4 . . . 31 Append
12、ix II (Informative) Procedure examples . . 33 Number of pages: 45 Foreword This space is reserved for the ETS version of this document. - - - - . - 3q04583 0336803 942 Page 7 GSM 03.45 version 4.4.0 0.1 SCOPE This Specification deals with the procedures allowing the technical realization of the Grou
13、p 3 facsimile Service within the GSM PLMN using transparent Network support, according to the definition of Teleservice 61 and 62 specified in the TS GSM 02.03. 0.2 Normative references This ETS incorporates by dated and undated reference, provisions from other publications. These normative referenc
14、es 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 ETS only when incorporated in it by amendment or revision. For undated references, the latest edition o
15、f the publication referred to applies. i11 r 21 i31 i43 i51 i61 i81 91 i101 i111 121 i1 31 GSM O1 .O4 : “European digital cellular telecommunication system (Phase 2): “Abbreviations and acronyms“. GSM 02.03 : “European digital cellular telecommunication system (Phase 2); Teleservices supported by a
16、GSM Public Land Mobile Network (PLMN)“. GSM 03.1 O : “European digital cellular telecommunication system (Phase 2); GSM Public Land Mobile Network (PLMN) connection types“. GSM 04.02 : “European digital cellular telecommunication system (Phase 2); GSM Public Land Mobile Network (PLMN) access referen
17、ce configuration“. GSM 04.08 : “European digital cellular telecommunication system (Phase 2); Mobile radio interface layer 3 specification“. GSM 04.2 1 : “European digital cellular telecommunication system (Phase 2); Rate adaption on the Mobile Station - Base Station System (MS - BSS) interface“, GS
18、M 07.01 : “European digital cellular telecommunkation system (Phase 2); General on Terminal Adaptation Functions (TAFI for Mobile Stations M S) I. GSM 07.03 : “European digital cellular telecommunication system (Phase 2); Terminal Adaptation Functions (TAF) for services using synchronous bearer capa
19、bilities“. GSM 09.07 : “European digital cellular telecommunication system (Phase 2); General requirements on interworking between the Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)“. CCITT Recommendation T.35: “Proced
20、ure for the allocation of CCITT members codes“. CCITT Recommendation F. 1 60 Fascicle 11.5: “General operational provision for the international public facsimile“. CCITT Recommendation T.4 Fascicle V11.3: “Standardization of group 3 facsimile apparatus for document transmission“. CCITT Recommendatio
21、n T.30 Fascicle V11.3: “Procedures for document facsimile transmission in the general switched telephone network“. Previous page is blank _ _._ - _ - -_ 3404583 OLLb804 889 Page 8 GSM 03.45 version 4.4.0 i1 41 i1 51 i1 61 17 71 t181 i1 91 i201 CCITT Recommendation V.21 Fascicle VIII.I: “300 bits per
22、 second duplex modem standardized for use in the general switched telephone network“. CCITT Recommendation V.24 Fascicle VIII.1: “List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE)“. CCiTT Recommendation V.25bis Fascicle VI
23、1I.I: “Automatic calling and/or answering equipment on the general switched telephone network (GSTN) using the 1 OO-series interchange circuits“. CCITT Recommendation V.27ter Fascicle VIII.I: “4800/2400 bits per second modem standardized for use in the general switched telephone network“. CCITT Reco
24、mmendation V.29 Fascicle VIII.I: “9600 bits per second modem standardized for use on point-to-point 4-wire leased telephone- type circuits“. CCITT Recommendation V.33 Fascicle VII1.I: I 14400 bits per second modem standardized for use on point-to-point 4-wire leased telephone- type circuits“. CCITT
25、Recommendation X.300 Fascicle V111.6: “General principles for interworking between public networks, and between public networks and other networks for the provision of data transmission services“. 0.3 Definitions and abbreviations In addition to those below abbreviations used in this specification a
26、re listed in GSM 01.04. BCS CTI 05 CT106 CT107 CT108.2 CT1 O9 CT114 CT115 FAIMT FAIIWF MSG Binary Coded Signalling phase of Facsimile transmission as per CCITT T.30 Interchange Circuit 105 as per CCITT V.24 Interchange Circuit 106 as per CCITT V.24 Interchange Circuit 107 as per CCITT V.24 Interchan
27、ge Circuit 108/2 as per CCITT V.24 Interchange Circuit 1 O9 as per CCITT V.24 Interchange Circuit 1 14 as per CCITT V.24 Interchange Circuit Il 5 as per CCITT V.24 The Fax Adaptor specifically located at MT side The Fax Adaptor specifically located at IWF side Message phase of Facsimile transmission
28、 as per CCITT T.30 All protocol entities from CCITT Facsimile Recommendations (T.4 and T.30) apply; in this specification they are referenced to in the same way as in the above CCITT Recommendations (see also Appendix 1 to this Specification). 1 SERVI CE DEFIN ITION The fixed network Group 3 Facsimi
29、le service, as basically defined in CCITT Recommendation F. 160, is an international telematic service for IS0 A4 document transmission between two facsimile stations. The service specification is comprised of two parts: the control protocol described in CCITT Recommendation T.30, and the document t
30、ransmission coding described in CCITT Recommendation T.4. The GSM facsimile Teeservice is intended to allow facsimile connections between group 3 apparatus using: . - - a GSM PLMN as a stand alone facility, for mobile to mobile communication; a GSM PLMN to gain access to fixed networks PSTN and ISDN
31、, for mobile to/from land communication. For this .Teleservice, the document coding is as CCITT Recommendation T.4 with no modifications. The protocol used is CCIlT Recommendation T.30 modified within the PLMN as detailed in this Specification. The interworking between different networks is based on
32、 CCIlT Recommendation X.300. The particular features of this Teleservice are: - it uses point-point communication; - the information transfer capability is dual “Speech“/“Group 3 Facsimile“ for Teleservice 61 and “Group 3 Facsimile“ only for Teleservice 62; - both mobile originated and terminated ca
33、lls are supported; - the information transfer mode is circuit, duplex, synchronous and symmetric; - different end-to-end transfer rates are used within the same call to take advantage of the better radio path error rate; - use of a cfandard synchronous terminal adaptation function (as per TS GSM 07.
34、03) within the MS. 2 NETWORK ARCHITECTURE The network architecture applicable to this Teleservice is shown in Fig 1/03.45, below. Fig. 1/03.45 Network architecture This shows the case of mobile to fixed network interworking. For mobile to mobile calls, there would effectively be a loop back within t
35、he PLMN, using two IWFs. . Page 10 GSM 03.45 version 4.4.0 3404583 OLLb80b 65% 3 REFERENCE CONFIGURATION AT THE MOBILE STATION reference configurations described in this section are defined as per TS GSM 04.02. I I I I # FAX 2w I I I I Fig. 2/03.45 Reference configurations The Teleservice definition
36、 in TS GSM 02.03 regards the group 3 facsimile terminal as a 2-wire analogue terminated equipment, In order to connect this to the MT2 a separate “Fax Adaptor“ device is necessary. This configuration, shown in Fig.2a/03.45, has to be considered as the standard configuration, so that all the existing
37、 Group 3 facsimile apparatus can be connected to the PLMN. An alternative realisation would be to combine a standard group 3 facsimile machine and the Fax Adaptor into a specially developed “GSM facsimile machine“ , directly providing a digital output. Although such a device must appear to the MT2 a
38、s identical to the Fax Adaptor he. with an identical interface and protocol), it would allow for a significantly smaller and simpler facsimile machine. This configuration is shown in Fig.2d/03.45 and is regarded as a desirable alternative. In addition of course, it is always possible to realise an M
39、TO, as per Fig.2f/03.45, where both the facsimile and mobile termination functions are considered to be part of one integrated unit. The remaining configurations concern the use of an S interface and are considered as optional configurations. Their use is for further study. The particular terminal a
40、daptation functions used are those detailed in TS GCM 07.03 and the interface to the MT2 used is synchronous V.24 with an option for support of V.25bis procedures for autocaliing and autoanswering. - _ -_ - _ - H 3404583 0116807 598 Page 11 GSM 03.45 version 4.4.0 3.1 Fax Adaptor functionality The F
41、ax Adaptor block, Fig.3/03.45, is intended to specifically complement the Group 3 facsimile apparatus in order to be able to communicate over a GSM PLMN. COMPOSE MODEM I TONE HANDLING Fig.3/03.45 Fax Adaptor scheme Whether it has to be a function internal to the GSM PLMN, or an external accessory as
42、sociated with the Group 3 apparatus, is beyond the scope of this Specification, and in any case, does not affect at all the working of the procedure as here described. It can be functionally partitioned in two sections: - an analogue section, dealing with: - the modulation and demodulation processes
43、 according to CCITT Recommendation V.21, V.27ter and V.29 as explained in T.4 and T.30; - handling of the signalling on the 2-wire path to the facsimile machine, including autocalling and autoanswer functions where necessary (see section 61. - a digital section, dealing with: - monitoring and where
44、necessary, manipulation of the T.30 protocol as detailed in the rest of this Specification; - overall control of the adaptor; - connection over the synchronous V.24 interface to the MT as described in TC GSM 07.03; - where necessary, autocalling and autoanswering functions according to V.25bis. In t
45、he following this specification will reference the Fax Adaptor functionality, considering the most general case where it operates as a full-featured (see Fig.3/03.45) separate block (see Fig.2a/03.45), as this reference configuration is implicitly or explicitly exhaustive of all service related tech
46、nical aspects. 3.2 GSM Facsimile Machine functionality The special GSM facsimile machine shown in the MS configuration of Fig.2d/03.45 has a similar functionality to the digital part of the Fax Adaptor, but without any of the analogue portions. It appears over the V.24 interface as identical to the
47、Fax Adaptor, .e. the MT2 needs to have no - - -_ 3404583 OLLb808 424 Page 12 GSM 03.45 version 4.4.0 Protocol type of fig.6 of TS GSM 03.10 Model 6:Speech knowledge of the particular configuration used. Access to TAF of the Mobile Station _-_ When necessary this reference configuration, will be expl
48、icitly referenced to in the following; otherwise all technical aspects relevant to the configuration implicitly apply. Intermediate rate RA1 to RA2 4 CONNECTION TYPES BS-MSC/IWF connection element Table 1 /03.45 shows the connection. elements attributes applicable to this Teleservice(), adapted from
49、 TS GSM 03.10. Model 5: Facsimile Group 3 C/D/S UD1 - 9.6kbith - 4.8kbitk - 2.4kbit/ (*I Radio interface connection element SpeechlGSM - A-law I ccIrr C/D/S UD1 C/D/S UD1 C/D/S UD1 - 12.0kbith - 6.0kbitk - 3.6kbitk C = Circuit switched D = Full-duplex S = Synchronous UD1 = Unrestricted Digital Information Table 1 /03.45 Elements of connection types The Fig.4/03.45 shows the scheme of a typical GSM PLMN connection for this Teleservice, considering respectively R and S access at Network Termination. To grant fu
