1、3404583 OL05bbL 997 Released: February IO, 1994 GSM 09.05 Version: 4.4.1 Date: January 21, 1994 Source: ETSI TC-SMG Reference: GSM 09.05 UDC: 621.396.21 Key words: European digital cellular telecommunications system, Global System for Mobile communications (GSM) European digital cellular telecommuni
2、cation system (Phase 2); Interworking between the Public Land Mobile Network (PLMN) and the Packet Switched Public Data Network (PSPDN) for Packet Assembly/Disassembly (PAD) facility access (GSM 09.05) I ONLY I ETSI European Telecornmunications Standards institute ETSI Secretariat Postal address: 06
3、921 Sophia Antipolis Cedex - FRANCE Office address: Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE Tel.: + 33 92 94 42 O0 - Fax: + 33 93 65 47 16 _ _ European Telecommunications Standards Institute 1 994. All rights reserved. No part may be reproduced except as authorised by written permi
4、ssion. The copyright and the foregoing restriction on reproduction extend to all media in which the information may be embodied. 3404583 0305662 823 Page 2 GSM 09.05 version 4.4.1 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical o
5、r 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. Page 3 GSM 09.05 version 4.4.1 Contents Foreword . 5 O SCOPE 7 . 1 Normative references 7 2 DEFINITIONS AND ABBREVIATIONS . 9 3 Ci
6、rcuit switched access to a PAD in the PSPDN (Basic PAD access) . 9 3.1 General . 9 Visited PAD access . 11 3.2 3.3 Home PAD access 10 4 Dedicated PAD access . 12 Location of the Dedicated PAD . 12 PAD internal to the PLMN . 12 4.3 GSM profile . 13 Routing to and selection of PAD functions . 13 4.4.1
7、 Introduction 13 General selection procedures . 13 Minimum Standard access functionality 14 Additional access functionality 14 Dedicated PAD functionality . 15 Transparent bearer service . 15 Identification and technical aspects of charging 15 Supplementary service Interworking 16 4.1 Definition 12
8、4.2 PAD external to the PLMN 12 4.2.1 4.2.2 4.4 4.4.2 4.4.3 4.4.4 4.5 4.6 4.7 4.8 4.9 Non Transparent bearer service 15 ANNEX 1 (Normative) 17 ANNEX 2 (Normative) 18 ANNEX 3 (Informative) . 20 ANNEX 4 (Informative) . 22 Number of pages: 22 3404583 0305bb4 bTb = . Page 5 GSM 09.05 version 4.4.1 Forew
9、ord This space is reserved for the ETS version of this document. Previous page is blank = 3404583 OI105bb5 532 Page 7 GSM 09.05 version 4.4.1 O SCOPE The purpose of this Technical Specification (TS) is to identify the interworking functions and requirements to support PAD services in the PLMN. GSM 0
10、9.05 applies to PAD access in order to provide communications with host systems connected to PSPDN for MSs. Within this TS, the requirements for accessing an existing PAD in a PSPDN (basic PAD access) or accessing a dedicated PAD are considered separately. In each case, the general problem of chargi
11、ng is examined. This TS considers only the access by a MS to a PAD and not the reverse access (Le. only mobile originated calls are supported). 1 Normative references This ETS incorporates by dated and undated reference, provisions from other publications. These normative references are cited at the
12、 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 of the publication r
13、eferred to applies. 1 1 GSM O1 .O4 (ETR 100): “European digital cellular telecommunication system (Phase 2); Definitions, abbreviations and acronyms“. i21 CCITT Recommendation E.164: “Numbering plan for the ISDN era“. I31 i41 i51 I61 i71 81 I91 Il01 11 11 i121 CCITT Recommendation X.121: “Internatio
14、nal numbering plan for public data networks“. CCITT Recommendation X.3: “Packet assembly disassembly facility (PAD) in a public data network“. CCITT Recommendation X.28: “DTE/DCE interface for a start-stop mode data terminal accessing the PAD in a public data network situated in the same country“. C
15、CITT Recommendation X.29: “Procedure for exchange of control information and user data between a PAD and a packet mode DTE“. CCITT Rec. X.75: “Packet switched signalling system between public networks providing data transmission services“. GSM 02.02 : “European digital cellular telecommunication sys
16、tem (Phase 2); Bearer Services (BS) supported by a GSM Public Land Mobile Network (PLMN)“. GSM 03.03 : “European digital cellular telecommunication system (Phase 2); Numbering, addressing and identification“. GSM 03.1 O : “European digital cellular telecommunication system (Phase 2); GSM Public Land
17、 Mobile Network (PLMN) connection types“. GSM 04.08 : “European digital cellular telecommunication system (Phase 2); Mobile radio interface layer 3 specification“. GSM 04.21 : “European digital cellular telecommunication system Previous page is blank 3404583 Ol.105666 977 W * Page 8 GSM 09.05 versio
18、n 4.4.1 (Phase 2); Rate adaption on the Mobile Station - Base Station System (MS - BSS) interface “. i1 31 i141 11 51 i1 61 11 71 i181 GSM 07.01 : “European digital cellular telecommunication system (Phase 2); General on Terminal Adaptation Functions (TAF) for Mobile Stations IMS)“. GSM 07.02 : “Eur
19、opean digital cellular telecommunication system (Phase 2); Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities“. GSM 08.20 : “European digital cellular telecommunication system (Phase 2); Rate adaption on the Base Station System - Mobile-services Switching Centre
20、(BSS - MSC) interface“. GSM 09.03 : “European digital cellular telecommunication system (Phase 2); Signalling requirements on interworking between the Intergrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN) and the Public Land Mobile Network (PLMN) “ . GSM 09.07 : “Eu
21、ropean digital , cellular telecommunication system (Phase 2); General requirements on interworking between the Public Land Mobile Network (PLMN) and the Intergrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)“. ENV 41 901 (1 987): “Information systems interconnection
22、- X.29-mode procedures between a packet mode DTE or a PAD and a PAD via a public or private X.25 packet switched network or IS0 8208 packet level entity and IS0 7776 link level entity. X.3 character-mode access via a public or private PAD attached to an X.25 packet switched network or IS0 8208 packe
23、t level entity and IS0 7776 link level entity. X.28 character-mode access via a telephonic circuit or data circuit to a PAD“. 3404583 0305667 305 Page 9 GSM 09.05 version 4.4.1 2 DEFINITIONS AND ABBREVIATIONS Abbreviations used in this specification are listed in GSM 01.04. Facility Request The Tabl
24、e 09.05/7 (given in Annex 41, extracted from CCITT Rec. X.28 lists the facility request/indication codes. Note: The facility “ closed user group “ is not part of the dedicated PAD access. 3 Circuit switched access to a PAD in the PSPDN (Basic PAD access) 3.1 General The basic PAD access is the acces
25、s to a X.28 dial in port in a PSPDN without or via one or more transit ISDN or PSTN networks. This access is provided by GSM bearer services 21 - 26. However, it should be noted that the X.28 PAD does not support out-band flow control and does not support 7 bit characters without parity. The general
26、 interworking requirements are defined in GSM 09.07. Note: In cases where no transit networks are used, the interface between the PLMN and the PAD is outside the scope of this TS and implementation dependent. Bearer Service in GSM PLMN 21 22 23 24 25 26 Access at Mobile Station Data Cct 300 bit/s Da
27、ta Cct 1.2kbit/s Data Cct 1200/75 bit/s Data Cct 2.4kbit/s Data Cct 4.8kbit/c Data Cct 9.6 kbitls Bearer service in ISDN (note 1) Cct mode 3.1 kHz Audio Bearer service in PSTN (note 1) Cct mode 3.1 KHz Audio Note 1: if used as a transit network Note 2: The default profile of the accessed PAD applies
28、. Bearer service in PSPDN (note 2) Table 09.05/1 Network interworking requirements for basic PAD access 3404583 0305668 243 COUNTRY A (home country) Page 10 GSM 09.05 version 4.4.1 COUNTRY B (visited country) 3.2 Home PAD accens PCPDN Home PAD access would normally be available for a mobile subscrib
29、er both when he/she is present in the home PLMN and when in a visited PLMN. Figure 09.05/1 illustrates both of these examples where he/she is accessing a PAD via the home PSTN. To access the PAD the user would need to be registered with the PSPDN and have hidher own NUI if a specific profile or loca
30、l charging are required. In this instance to initiate a call to the PAD the mobile subscriber sets up a call to the PSTN number associated with the PAD. The interworking function provides only the necessary modem, RLP (if required) etc., as indicated in the call Set-up message and does not provide a
31、ny additional functionality associated with PAD access. This access being available to the mobile subscriber from the home PLMN implies the use of a national PSTN call and when in a foreign PLMN the use of an international PSTN call. . I-I . . PSTN/ISDN A : PSTN/ISDN B PLMNA : Mobile Station :. PLMN
32、 B Mobile Stat ion Figure 09.05/1 Home PAD access 3404583 0105669 188 HOST COUNTRY A (home country) PSPDN . Page 11 GSM 09.05 version 4.4.1 COUNTRY B (vi sited country ) . PSPDN PAD PSTN/ISDN B : 3.3 Visited PAD access When the mobile subscriber is within a PLMN in a foreign country an alternative t
33、o home PAD access is given in Figure 09.05/2. The PAD used in this case is a PAD within the visited country. In this case the mobile subscriber initiates a PSTN call to the PAD in the visited country, and utilises the international link within the PSPDN. The mobile subscriber would need to be regist
34、ered with the visited PSPDN to obtain an NUI if a specific profile or local charging are required, plus needing to know the correct PSTN number for accessing the PAD. The mobile subscriber would also need to know the user procedure for connecting to the PAD including the presentation of the NUA (int
35、ernational/national). Again the interworking function would not provide any additional requirements over and above the normal PSTN interworking. Mobile Stat ion Figure 09.05/2 Visited PAD Access W 3404583 OL05b70 9TT Page 12 GSM 09.05 version 4.4.1 4 Dedicated PAD access 4.1 Definition The “dedicate
36、d PAD access“ provides the shortest possible connection from the PLMN to a PAD for both home subscribers staying in the home PLMN as well as roaming foreign subscribers in the visited PLMN. The MT or TA does not use the E.164 address of the PAD. A common access procedure as described below being app
37、lied by all PLMNs supporting this type of service hides the differences of existing PADs in GSM countries for GSM PLMN subscribers. The mobile subscriber has only a subscription to his home PLMN for the use of the “dedicated PAD access“. The applicable GSM bearer services are those of the 40-series.
38、 The dedicated PAD provides general PAD functions according to CCITT Rec. X.3, X.28 and X.29 and in addition PLMN specific functions (e.g. identification, profile selection) as defined in this specification. in this type of PAD access, the PLMN has direct access to a PAD e.g dedicated link, etc. In
39、this TS there is no difference between a PAD which has ail its entry ports connected to the PLMN and a PAD which has only some entry ports dedicated to the PLMN. For roaming subscribers, the user accesses a dedicated PAD of the visited PLMN, in that respect GSM 09.05 does not allow access to the ded
40、icated PAD within the home PLMN. In this case only figure 09.05/2 is valid. In this case, the PAD is either an existing one or one which is provided by the PLMN. It is a network operator option as to which should be provided. When the PAD is restricted solely to PLMN use then it is defined as a GSM
41、variant PAD. Charging procedures are covered in section 4.8. It is this type of PAD access and the procedures necessary to invoke it that will be discussed in the rest of this section. It is a network operators option as to whether basic or basic and dedicated PAD access should be provided . 4.2 Loc
42、ation of the Dedicated PAD 4.2.1 PAD external to the PLMN In some cases, the dedicated PAD may be physically outside the PLMN (e.g. part of the PSPDN) a) This case takes into account PADs which are not part of the PLMN but are connected to it by dedicated circuits. b) This case takes into account PA
43、Ds which are not part of the PLMN, but where the PLMN establishes a circuit switched connection to the PAD in the PSTN/ISDN automatically, .e. the user does not enter the directory number of the PAD, only the normal dedicated PAD short code access number. The interface between the PLMN and the PAD (
44、PSPDN) including administrative arrangements is based on bilateral agreement between network operators. 4.2.2 PAD internal to the PLMN This case takes into account PADs which are part of the PLMN and are connected to the PSPDN or to the ISDN PH via X.25 or X.75. - -. -_ W 3404583 0105671 836 W Page
45、13 GSM 09.05 version 4.4.1 It is possible that each MSC within the PLMN offers PAD access by a PAD integrated in the MSC. 4.3 GSM profile There is a common set of profiles for the dedicated PAD access described in the annexes. The user may use the default profile or may select one of the profiles de
46、fined in the annexes or may set individual parameters amongst those in the GSM profiles. The profiles listed are: 1) GSM default profile (Annex 1). 2) GSM Version of five PAD profiles (Annex 2). 3) European Pre Standard ENV 41901 (Annex 3) 4.4 Routing to and selection of PAD functions 4.4.1 Introduc
47、tion Two user friendly methods are defined to access a PAD. These are - a minimum standard access functionality which provides an uniform access to a PAD on a GSM PLMN - additional access functionalities which provide enhanced functions on some PLMNs, e.g. special profiles or auto selection of a ter
48、minal on a PSPDN (X.28 direct call) 4.4.2 General seiection procedures Access to the PAD is determined by the value “X.28 dedicated access, universal NUI“ in the bearer capability element “signalling access protocol“ of the SETUP message (see GSM TS 07.01). In addition, there is an indication in the
49、 type of number (TON) field that it is a dedicated short code access, plus the appropriate NPI (private numbering plan) and short code information in the called party BCD Number. The MSC/IWF on identifying the TON as “dedicated access, short code“, uses the short code number to select a dedicated PAD/PAD profile and routes the call according to the short code selected to the appropriate PAD using the requested profile. When no short code information is contained then the default GSM profile is selected. In addition the MSC/IWF “registers“ the user on PAD using the PLMN registrat
