1、ETSI TR 1 O1 634 V7.0.0 (1999-08) Technical Report Digital cellular telecommunications system (Phase 2+); Support of Teletex in a GSM Public Land Mobile Network (PLMN) (GSM 03.44 version 7.0.0 Release 1998) (GSM 03.44 version 7.0.0 Release 1998) 2 ETSI TR 1 O1 634 V7.0.0 (1 999-08) Reference RTWSMG-
2、040344Q7 (f4003i04.PDF) Keywords Digital cellular telecommunications system, Global System for Mobile communications (GSM) ETSI Postal address F-O6921 Sophia Antipoiis Cedex - FRANCE Ofice address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Siret No 348 623 562 00017 - NAF 742 C Asso
3、ciation but non lucratif enregistre la Sous-Prfecture de Grasse (06) No 7803/88 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Internet secretariat b etsi.fr Individual copies of this ETSI deliverable can be downloaded from htp:/www.etsi.org If you find errors in the present document, send your comm
4、ent to: editorbetsi.fr CoiDvriaht Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 1999. Ali rights reserved. (GSM 03.44 version 7.0.0
5、Release 1998) 3 ETSI TR 101 634 V7.0.0 (1999-08) Contents Intellectual Property Rights . 4 Foreword 4 1 2 2.1 3 3.1 3.2 3.3 4 4.1 4.2 4.3 4.4 4.5 Scope 5 References 5 Abbreviations . 6 Introduction 6 Teletex service definition . 6 Context for the Support of Teletex in a GSM PLMN 7 Reference Configur
6、ation of a Teletex Mobile Station . 8 Interworking for Teletex Support 8 Global Network Configuration for Teletex 8 Network Interworking Scenarios . 9 Mobile-to-mobile Communication . 10 Use of GSM Supplementary Services 10 High Layer Compatibility Information Element 11 Annex A (informative): Telet
7、ex Document Store (TDS) 12 A.l Introduction 12 A.2 Minimum Set of Functions 12 A.3 A.4 Receiving Teletex Documents into the Document Store . 13 Getting Teletex Documents from the Document Store . 13 Annex B (informative): Change Request History . 14 History 15 (GSM 03.44 version 7.0.0 Release 1998)
8、4 ETSI TR 101 634 V7.0.0 (1999-08) Intellectual 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 available for ETSI members and non-members, and can be found in SR o
9、00 314: “Intellectual Properly Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). Pursuant to the ETSI IPR
10、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 SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Tech
11、nical Report (TR) has been produced by the Special Mobile Group (SMG). The present document describes the Support of teletex in a digital cellular telecommunication system. The contents of the present document is subject to continuing work within SMG and may change following formal SMG approval. Sho
12、uld SMG modify the contents of the present document it will be re-released with an identifying change of release date and an increase in version number as follows: Version 7.x.y where: 7 indicates Release 1998 of GSM Phase 2+ x the second digit is incremented for all changes of substance, i.e. techn
13、ical enhancements, corrections, updates, etc. y the third digit is incremented when editorial only changes have been incorporated in the specification. STD-ETSI TR 101 634-ENGL 1999 3400855 O440410 bBO (GSM 03.44 version 7.0.0 Release 1998) 5 ETSI TR 101 634 V7.0.0 (1999-08) 1 Scope The present docu
14、ment describes the support of the teletex service by a GSM Public Land Mobile Network (PLMN). 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 publicatio
15、n, edition number, version number, etc.) or non-speci fic. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number.
16、 For this Release 1998 document, references to GSM documents are for Release 1998 versions (version 7.x.y). 111 c21 31 41 151 c71 91 1111 1121 CCITT F.200 series Recommendations, Fascicle 11.5: “Telematic, data transmission and teleconference services-Operations and quality of service“. CCITT T.300
17、series Recommendations, Fascicle VIIS: “Terminal equipment and protocols for telematic services“. CCITT X.200 series Recommendations, Fascicle VI11.4 Data communication networks: services an facilities, interfaces“. CCITT X.300 series Recommendations, Fascicle VIII.6: “Data communication networks: i
18、nterworking between networks, mobile data transmission systems,intemetwork management“. CCITT X.400 series Recommendations, Fascicle VIII.7: “Data communication networks: message handling systems“. CCITT T.0 series Recommendations, Fascicle VII.3 Terminal equipment and protocols for telematic servic
19、es (T.60,T.61 ,T.62)“. CCITT T.65 series Recommendations, Fascicle VIIS: “terminal equipment and telematic services (T.70)“. CCITT X. 1 series Recommendations, Fascicle VIII.2: “Data communication networks: services and facilities, interfaces (X.21,X.31,X.32)“. CCITT X.40 series Recommendations, Fas
20、cicle VIII.3: “Data communication networks: transmission, singnalling and switching, network aspects, maintenance and administrative arrangements( X.52,X.7 1 ,X.75)“. CCIT V series Recommendations, Fascicle VIII. 1 : “ Data communication over the telephone network (V.110)“. GSM 01.04: “Digital cellu
21、lar telecommunication system (Phase 2+); Abbreviations and acronyms“. GSM 02.02: “Digital cellular telecommunications system (Phase 2+); Bearer Services (BS) supported by a GSM Public Land Mobile Network (PLMN)“. GSM 02.03: “Digital cellular telecommunications system (Phase 2+); Teleservices support
22、ed by a GSM Public Land Mobile Network (PLMN)“. GSM 03.10: “Digital cellular telecommunication system (Phase 2+); GSM Public Land Mobile Network (PLMN) connection types“. STD-ETSI TR LO1 b34-ENGL 1999 3400855 0440411 5 Routeing of calls to/from Public Data Networks (PDN)“. GSM 07.01 : “Digital cellu
23、lar telecommunications system (Phase 2+); General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)“. GSM 07.03: “Digital cellular telecommunications system (Phase 2+); Terminal Adaptation Functions (TAF) for services using synchronous bearer capabilities“. GSM 09.01 : “Digital cellula
24、r telecommunication system (Phase 2+); General network interworking scenarios“. GSM 09.04: “Digital cellular telecommunication system (Phase 2+); Interworking between the Public Land Mobile Network (PLMN) and the Circuit Switched Public Data Network (CSPDN)“ GSM 09.06: “Digital cellular telecommunic
25、ations system (Phase 2+); Interworking between a Public Land Mobile Network (PLMN) and a Packet Switched Public Data Networknntegrated Services Digital Network (PSPDNaSDN) for the support of packet switched data transmission services“. I GSM 09.07: “Digital cellular telecommunications system (Phase
26、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)“. Abbreviations In addition to those below, definitions used in the present document are listed in GSM 01.04. AU CF G
27、MSC HDLC IWU LAPB PLP TDS TID Ttx Tb-MS Ttx-TE Tx VCS Access Unit (CCITT X.31) Conversion Facility (for Ttx/Tx service interworking) Gateway MSC High Level Data Link Control Interworking Unit (CCITT X.7 l/CCITT X.75) Link Access Procedure Balanced Packet Layer Protocol Teletex Document Store Termina
28、l Identification (CCITT F.200) Teletex Teletex Mobile Station (i.e. a MS with Ttx terminal connected) Teletex Terminal Equipment Telex Virtual Circuit Service 3 Introduction 3.1 Teletex service definition The teletex (Ttx) service is an international telematic service as defined in CCITT F.200-serie
29、s of recommendations. As an essential characteristic it provides a basic level of compatibility between all terminals participating in the service. Normally the service shall operate on a fully automatic basis and be open continuously. (GSM 03.44 version 7.0.0 Release 1998) 7 ETSI TR 1 O1 634 V7.0.0
30、 (1 999-08) Teletex subscriber equipment shall be in accordance with the CCITT recommendations T.60, T.61, T.62, and T.70. Especially it shall a) have unique terminal identifications (TID); b) be able to send andor receive documents without terminal operator intervention; c) have a certain set of in
31、dications to the terminal operator; d) in principle be able to accept calls continuously, if call numbers are published in the directories (In order to meet this requirement, it is allowed to use a document storage facility which can be network or customer premises based.); e) be able to prepare doc
32、uments being forwarded to the telex service using appropriate conversion facilities within the network. According to the CCITT T.70 (version 1988) the teletex service may be offered in the following types of networks: a) the Circuit Switched Public Data Network (CSPDN); b) the Packet Switched Public
33、 Data Network (PSPDN); c) the Public Switched Telephone Network (PSTN); and d) the Integrated Services Digital Network (ISDN). The interworking between the different networks may be based on CCITT X.300-series of recommendations. 3.2 Context for the Support of Teletex in a GSM PLMN Considering that
34、a) international roaming of teletex subscribers must be supported; b) all CEPT countries have PSPDNs; c) PSPDNs providing an access unit AU (X.31 case A) support procedures according to CCITT X.32; d) each CEPT country will have an ISDN; e) ISDNs may provide the VCS; f) the teletex service supported
35、 by a GSM PLMN can participate in the internationally available teletex service, i.e. ali teletex terminals, for which a call number is published in the service directory, can communicate with each other. the following basic assumptions will apply: a) In principle no specific network interworking fu
36、nctions shall be necessary in a VPLMN for the support of teletex. b) No specific additional bearer service other than those defined in GSM 02.02 shall be needed in a VPLMN. c) Ttx specific IWFs, if any, must not have any impact on the MS of a roaming subscriber. d) Both PSTN and ISDN, if available,
37、may be used as a transit network to the PSPDN. e) Presently no service interworking (especially for telex) directly from the GSM PLMN is provided. Conversion facilities within the fixed networks shall be used. NOTE: A mobile terminated call may be forwarded to a document storage facility called Tele
38、tex Document Store (TDS), if available, when the addressed Ttx-MS is temporarily unable to accept a call. The provision and the location of such a store is at the PLMN operators discretion (e.g. within the PLMN or within a fixed network). STDmETSI TR LOL b34-ENGL 3999 3400855 0440433 39T .I - _ (GSM
39、 03.44 version 7.0.0 Release 1998) 8 ETSI TR 1 O1 634 V7.0.0 (1 999-08) 3.3 Reference Configuration of a Teletex Mobile Station The reference configuration (figure UGSM 03.44) is equivalent to those configurations in GSM 07.03. An explicit TA may be used between the R- and the S-interface reference
40、point. The configuration TE1-MT1 can only be supported by means of a specialized TAF including protocol conversion, if necessary, to guarantee the compatibility at the radio interface. For the time being this may be a national option. Further configurations may be possible. I - Teletex Mobile Statio
41、n (Ttx-MS) - X.25 (X.21, X.2lbis V-series) Figure l/GSM 03.44: Reference Configuration of a Teletex Mobile Station 4 Interworking for Teletex Support 4.1 Global Network Configuration for Teletex Presently teletex is offered in the CSPDN, the PSPDN, the PSTN, and in the very next future in the ISDN.
42、Figure UGSM TS 03.44 shows the different networks to which a GSM PLMN may have to interwork, when supporting the communication between teletex terminals. STDmETSI TR LO1 b34-ENGL 1999 3400855 0440434 226 9 - (GSM 03.44 version 7.0.0 Release 1998) 9 ETSI TR 1 O1 634 V7.0.0 (1 999-08) opt ion function
43、 (reference annex) *I This interworking requires a Ttx-specific IWF within the PLMN (see section 4.2) Figure UGSM 03.44: Global Network Configuration For service interworking with telex the national fixed network based TWTx conversion facility (CF) shall be used. For roaming subscribers this results
44、 in an international access. Whether the conversion facilities are prepared to receive such calls is not in the scope of the present document. 4.2 Network Interworking Scenarios The following network interworking scenarios may be derived from the global network configuration. Some scenarios allow fo
45、r different implementations of an IWF. For the interworking functions needed between the PLMN and the different networks refer to GSM TS 09.06 and 09.07. The choice of interworking scenario and the IWF is at the PLMN operators discretion. The PLMN and the particular PDN may be connected directly or
46、via (a) transit network(s). 1) Direct interworking PLMN to PSPDN nn nnnl I u- UUUI I I TE H MT p BSS H MSC H IWF H PSPDN I pLm _- J - 2) Interworking PLMN to PSPDN via ISDN 3) Interworking PLMN to PSPDN via PSTN nn nnnl I u- uu-I II I I TE H MT BSS H MSC H IWF H PSTN H PSPDN I pm _-_- J - - 4) Inter
47、working PLMN to PSPDN via ISDNPSTN STD-ETSI TR 101 b34-ENGL 1797 m 3400855 0440435 3b2 m (GSM 03.44 version 7.0.0 Release 1998) 10 ETSI TR 101 634 V7.0.0 (1999-08) 5) Direct interworking PLMN to CSPDN with protocol conversion NOTE: 6) Interworking PLMN to CSPDN via ISDN with protocol conversion This
48、 is a national option, because specific functionality in the IWF is needed . - -I il I II I I TE H MT BSS H MSC H IWF H ISDN H CSPDN I uu NOTE: 7) Direct interworking PLMN to ISDN with protocol conversion This is a national option, because specific functionality in the IWF is needed . NOTE: Presentl
49、y this interworking case applies only to the Ttx service within an ISDN using T.70-CSPDN protocols. Figure WGSM 03.44: Network Interworking Scenarios For the interworking PLMN to the different networks the following GSM specifications apply: PLMN to CSPDN: GSM 09.04 PLMN to PSPDN: GSM 09.06 PLMN to PSTNASDN: GSM 09.07 4.3 Mobile-to-mobile Communication A communication from a mobile to another mobile is treated like a call frondto a fixed network subscriber, e.g. using the packet functions as per GSM 09.06. 4.4 Use
