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Content for  TS 44.057  Word version:  18.0.0

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1…   4… 
1 Scope  1.1 Scope of the Technical Specification  1.2 Application to the interface structures  1.3 Structure of layer 3 procedures  1.4 Test procedures  1.5 Transmission layer  1.6 Overview of control procedures  1.7 Applicability of implementations  2 References  3 Definitions, abbreviations and Random values  3.1 Definitions  3.2 Abbreviations  3.3 Random values 
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1  Scope  p. 7

The present document specifies the procedures used at the CTS system interface with the supervision part i.e. the interface between the CTS-FP and the CTS-SN.
Only CTS regular supervising procedures are described; FMC management is not intended to be standardised.
The present document does not specify the transmission layer but only the layer 3.
When the notations for "further study" or "FS" or "FFS" are present in the present document they mean that the indicated text is not a normative portion of the present document.
The structured functions and procedures of this protocol and the relationship with other layers and entities are described in general terms in GSM 04.07.
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1.1  Scope of the Technical Specification  p. 7

The procedures currently described in the present document are for supervising management over the CTS-FP/CTS-SN interface.

1.2  Application to the interface structures  p. 7

The layer 3 procedures apply to the interface structures defined in GSM 04.03. GSM 04.07 gives the general description of layer 3 including procedures, messages format and error handling.

1.3  Structure of layer 3 procedures  p. 7

A building block method is used to describe the layer 3 procedures.
The basic building blocks are "elementary procedures" provided by the protocol control entities.
Complete layer 3 transactions consist of specific sequences of elementary procedures. The term "structured procedure" is used for these sequences.

1.4  Test procedures  p. 7

Test procedures of the CTS / Fixed Network interface signalling are described in the GSM 11.56 series.

1.5  Transmission layer  p. 7

The transmission layer is out of scope of the present document. One implementation could be a V.22bis modem with an HDLC based protocol.

1.6  Overview of control procedures  p. 7

1.6.1  List of procedures  p. 7

The following procedures are specified in the present document:
The elementary procedures can be combined to form structured procedures. Examples of such structured procedures are given in clause 5. This part of the Technical Specification is only provided for guidance to assist implementations.
Clause 6 specifies actions to be taken on various error conditions and also provides rules to ensure compatibility with future enhancements of the protocol.
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1.7  Applicability of implementations  p. 8

The applicability of procedures of the present document for the fixed part is dependent on the services and functions which are to be supported by a fixed part.

2  References  p. 8

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, 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 in the same Release as the present document.
[1]
GSM 01.02: "Digital cellular telecommunications system (Phase 2+); General description of a GSM Public Land Mobile Network (PLMN)".
[2]
GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms".
[3]
GSM 02.02: "Digital cellular telecommunications system (Phase 2+); Bearer Services (BS) supported by a GSM Public Land Mobile Network (PLMN)".
[4]
GSM 02.03: "Digital cellular telecommunications system (Phase 2+); Teleservices supported by a GSM Public Land Mobile Network (PLMN)".
[5]
GSM 02.09: "Digital cellular telecommunications system (Phase 2+); Security aspects".
[6]
GSM 02.11: "Digital cellular telecommunications system (Phase 2+); Service accessibility".
[7]
GSM 02.17: "Digital cellular telecommunications system (Phase 2+); Subscriber Identity Modules (SIM); Functional characteristics".
[8]
GSM 02.40: "Digital cellular telecommunications system (Phase 2+); Procedures for call progress indications".
[9]
GSM 03.01: "Digital cellular telecommunications system (Phase 2+); Network functions".
[10]
GSM 03.03: "Digital cellular telecommunications system (Phase 2+); Numbering, addressing and identification".
[11]
GSM 03.13: "Digital cellular telecommunications system (Phase 2+); Discontinuous Reception (DRX) in the GSM system".
[12]
GSM 03.14: "Digital cellular telecommunications system (Phase 2+); Support of Dual Tone Multi Frequency signalling (DTMF) via the GSM system".
[13]
GSM 03.20: "Digital cellular telecommunications system (Phase 2+); Security related network functions".
[14]
GSM 03.22: "Digital cellular telecommunications system (Phase 2+); Functions related to Mobile Station (MS) in idle mode and group receive mode".
[15]
GSM 04.02: "Digital cellular telecommunications system (Phase 2+); GSM Public Land Mobile Network (PLMN) access reference configuration".
[16]
GSM 04.03: "Digital cellular telecommunications system (Phase 2+); Mobile Station - Base Station System (MS - BSS) interface; Channel structures and access capabilities".
[17]
GSM 04.04: "Digital cellular telecommunications system (Phase 2+); Layer 1; General requirements".
[18]
GSM 04.05: "Digital cellular telecommunications system (Phase 2+); Data Link (DL) layer; General aspects".
[19]
GSM 04.06: "Digital cellular telecommunications system (Phase 2+); Mobile Station - Base Station System (MS - BSS) interface; Data Link (DL) layer specification".
[20]
GSM 04.07: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface signalling layer 3; General aspects".
[21]
GSM 04.10: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3; Supplementary services specification; General aspects".
[22]
GSM 04.11: "Digital cellular telecommunications system (Phase 2+); Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface".
[23]
GSM 04.12: "Digital cellular telecommunications system (Phase 2+); Short Message Service Cell Broadcast (SMSCB) support on the mobile radio interface".
[24]
GSM 04.80: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 supplementary services specification; Formats and coding".
[25]
GSM 04.81: "Digital cellular telecommunications system (Phase 2+); Line identification supplementary services; Stage 3".
[26]
GSM 04.82: "Digital cellular telecommunications system (Phase 2+); Call Forwarding (CF) supplementary services; Stage 3".
[27]
GSM 04.83: "Digital cellular telecommunications system (Phase 2+); Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 3".
[28]
GSM 04.84: "Digital cellular telecommunications system (Phase 2+); MultiParty (MPTY) supplementary services; Stage 3".
[29]
GSM 04.85: "Digital cellular telecommunications system (Phase 2+); Closed User Group (CUG) supplementary services; Stage 3".
[30]
GSM 04.86: "Digital cellular telecommunications system (Phase 2+); Advice of Charge (AoC) supplementary services; Stage 3".
[31]
GSM 04.88: "Digital cellular telecommunications system (Phase 2+); Call Barring (CB) supplementary services; Stage 3".
[32]
GSM 05.02: "Digital cellular telecommunications system (Phase 2+); Multiplexing and multiple access on the radio path".
[33]
GSM 05.05: "Digital cellular telecommunications system (Phase 2+); Radio transmission and reception".
[34]
GSM 05.08: "Digital cellular telecommunications system (Phase 2+); Radio subsystem link control".
[35]
GSM 05.10: "Digital cellular telecommunications system (Phase 2+); Radio subsystem synchronization".
[36]
GSM 07.01: "Digital cellular telecommunications system (Phase 2+); General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)".
[37]
GSM 09.02: "Digital cellular telecommunications system (Phase 2+); Mobile Application Part (MAP) specification".
[38]
GSM 09.07: "Digital cellular telecommunications 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)".
[39]
GSM 11.10: "Digital cellular telecommunications system (Phase 2+); Mobile Station (MS) conformance specification".
[40]
GSM 11.21: "Digital cellular telecommunications system (Phase 2+); Base Station System (BSS) equipment specification".
[41]
ISO/IEC 646 (1991): "Information technology - ISO 7-bit coded character set for information interchange".
[42]
ISO/IEC 6429: "Information technology - Control functions for coded character sets".
[43]
ISO 8348 (1987) (Addendum 2): "Information processing systems - Data communications - Network service definition".
[44]
ITU-T Recommendation E.163: "Numbering plan for the international telephone service".
[45]
ITU-T Recommendation E.164: "The international public telecommunication numbering plan".
[46]
ITU-T Recommendation E.212: "The international identification plan for mobile terminals and mobile users".
[47]
ITU-T Recommendation F.69 (1993): "The international telex service - Service and operational provisions of telex destination codes and telex network identification codes".
[48]
ITU-T Recommendation I.330: "ISDN numbering and addressing principles".
[49]
ITU-T Recommendation I.440 (1989): "ISDN user-network interface data link layer - General aspects".
[50]
ITU-T Recommendation I.450 (1989): "ISDN user-network interface layer 3 - General aspects".
[51]
ITU-T Recommendation I.500 (1993): "General structure of the ISDN interworking recommendations".
[52]
ITU-T Recommendation T.50: "International Reference Alphabet (IRA) (Formerly International Alphabet No. 5 or IA5) - Information technology - 7-bit coded character set for information interchange".
[53]
ITU-T Recommendation Q.931: ISDN user-network interface layer 3 specification for basic control".
[54]
ITU-T Recommendation V.21: "300 bits per second duplex modem standardized for use in the general switched telephone network".
[55]
ITU-T Recommendation V.22: "1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits".
[56]
ITU-T Recommendation V.22bis: "2400 bits per second duplex modem using the frequency division technique standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits".
[57]
ITU-T Recommendation V.23: "600/1200-baud modem standardized for use in the general switched telephone network".
[58]
ITU-T Recommendation V.26ter: "2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits".
[59]
ITU-T Recommendation V.32: "A family of 2-wire, duplex modems operating at data signalling rates of up to 9600 bit/s for use on the general switched telephone network and on leased telephone-type circuits".
[60]
ITU-T Recommendation V.110: "Support by an ISDN of data terminal equipments with V-Series type interfaces".
[61]
ITU-T Recommendation V.120: "Support by an ISDN of data terminal equipment with V-Series type interfaces with provision for statistical multiplexing".
[62]
ITU-T Recommendation X.21: "Interface between Data Terminal Equipment and Data Circuit terminating Equipment for synchronous operation on public data networks".
[63]
ITU-T Recommendation X.25: "Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit".
[64]
ITU-T Recommendation X.28: "DTE/DCE interface for a start-stop mode Data Terminal Equipment accessing the Packet Assembly/Disassembly facility (PAD) in a public data network situated in the same country".
[65]
ITU-T Recommendation X.30: "Support of X.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by an Integrated Services Digital Network (ISDN)".
[66]
ITU-T Recommendation X.31: "Support of packet mode terminal equipment by an ISDN".
[67]
ITU-T Recommendation X.32: "Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and accessing a packet-switched public data network through a public switched telephone network or an integrated services digital network or a circuit-switched public data network".
[68]
ITU-T Recommendation X.75 (1988): "Packet-switched signalling system between public networks providing data transmission services".
[69]
ITU-T Recommendation X.121: "International numbering plan for public data networks".
[70]
ETSI ETS 300 102-1: "Integrated Services Digital Network (ISDN); User-network interface layer 3; Specifications for basic call control".
[71]
ETSI ETS 300 102-2: "Integrated Services Digital Network (ISDN); User-network interface layer 3; Specifications for basic call control; Specification Description Language (SDL) diagrams".
[72]
ISO/IEC 10646: "Information technology - Universal Multiple-Octet Coded Character Set (UCS)".
[73]
GSM 02.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony System (CTS), Phase 1; Service description; Stage 1".
[74]
GSM 03.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony System (CTS), Phase 1; CTS Architecture Description; Stage 2".
[75]
GSM 03.52: "Digital cellular telecommunications system (Phase 2+); GSM-CTS; Overall description of the CTS radio interface; Stage 2".
[76]  Void.
[77]
GSM 04.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony System (CTS), Phase 1; CTS radio interface layer 3 specification".
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3  Definitions, abbreviations and Random values  p. 12

3.1  Definitions  p. 12

For the purposes of the present document, the following terms and definitions apply:
initialised Fixed Part:
Fixed Part which have been supplied with the necessary data to provide CTS service on the CTS radio interface. The CTS-FP initialisation procedure is performed at the Fixed Part installation and can be performed whenever the Fixed Part have been de-initialised.
de-initialised Fixed Part:
Fixed Part which does not contain the required data to offer CTS service. A de-initialised Fixed Part cannot offer any service.
enrolled Mobile Station:
Mobile Station is said to be enrolled on a Fixed Part if it has exchanged some data with this Fixed Part enabling attachement (e.g.in order to perform outgoing calls).
de-enrolled Mobile Station:
Mobile Station that is no more known by the Fixed Part.
CTS radio interface:
Radio interface between the Mobile Station and the Fixed Part.
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3.2  Abbreviations  p. 12

For the purposes of the present document, the abbreviations given in GSM 01.04 apply.

3.3  Random values  p. 12

In a number of places in the present document, it is mentioned that some value must take a "random" value, in a given range, or more generally with some statistical distribution.
It is required that there is a low probability that two equipments in the same conditions (including the case of two equipments of the same type from the same manufacturer) will choose or get the same value.

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