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Content for  TS 27.001  Word version:  17.0.0

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1  ScopeWord‑p. 7

The present document is based on the principles of terminal adaptor functions presented in the ITU-T I-series of Recommendations (I.460 to I.463).
The PLMN supports a wide range of voice and non-voice services in the same network. In order to enable non-voice traffic in the PLMN there is a need to connect various kinds of terminal equipment to the Mobile Termination (MT). The target of the present document is to outline the functions needed for the terminal adaptation.
The bearer services are described in TS 22.002 and the general network configuration is described in TS 23.002. The PLMN access reference configuration is defined in TS 24.002. The various connection types used in the A/Gb mode or GERAN Iu mode PLMN are presented in TS 43.010. Terminology used in the present document is presented in TR 21.905 and 3GPP TR 25.990 [47]. For support of data services between a PLMN and other networks see TS 29.007.
The present document is valid for a 2nd generation PLMN (A/Gb mode) as well as for a 3rd generation PLMN (Iu mode). If text applies only for one of these systems it is explicitly mentioned by using the terms "A/Gb mode" and "UTRAN Iu mode". If text applies to both of the systems, but a distinction between the ISDN/PSTN and the PLMN is necessary, the term "PLMN" is used.
The support of these services is still optional. The specification of these services is not within the scope of the present document. For that, the reader is referred to former releases.
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2  ReferencesWord‑p. 7

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]  Void.
[2]
TS 22.002: "Circuit Bearer Services (BS) supported by a Public Land Mobile Network (PLMN)".
[3]
TS 22.003: "Circuit Teleservices supported by a Public Land Mobile Network (PLMN)".
[4]
TS 23.002: "Network architecture".
[5]
TS 43.010: "GSM Public Land Mobile Network (PLMN) connection types".
[6]
TS 24.002: "GSM - UMTS Public Land Mobile Network (PLMN) access reference configuration".
[7]
TS 24.008: "Mobile radio interface layer 3 specification; Core network protocols -Stage 3".
[8]
TS 44.021: "Rate adaption on the Mobile Station - Base Station System (MS - BSS) interface".
[9]
TS 24.022: "Radio Link Protocol (RLP) for circuit switched bearer and teleservices".
[10]
TS 45.005: "Radio transmission and reception".
[11]
TS 27.002: "Terminal Adaptation Functions (TAF) for services using Asynchronous bearer capabilities".
[12]
TS 27.003: "Terminal Adaptation Functions (TAF) for services using Synchronous bearer capabilities".
[13]  Void.
[14]  Void.
[15]  Void.
[16]  Void.
[17]  Void.
[18]  Void.
[19]  Void.
[20]  Void.
[21]
TS 29.007: "General requirements on interworking between the Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)".
[22]  Void.
[23]  Void.
[24]  Void.
[25]  Void.
[26]
ITU-T V-series Recommendations: "Data communication over the telephone network".
[27]  Void.
[28]
ITU-T X-series Recommendations: "Data networks and open system communication".
[29]  Void
[30]
ITU-T Recommendation X.150 (11/88): "Data Communication Networks: Transmission, Signalling and Switching, Network Aspects, Maintenance and Administrative Arrangements".
[31]  Void.
[32]
ITU-T Recommendation V.250 (05/99): "Serial asynchronous automatic dialling and control".
[33]
ITU-T Recommendation V.54 (11/88): "Loop test devices for modems".
[34]
ITU-T Recommendation V.110 (10/96): "Support by an ISDN of data terminal equipments with V-Series type interfaces".
[35]
ITU-T Recommendation I.460 (02/99), ITU-T Recommendation I.461 (also published as ITU-T Recommendation X.30 [70] ), ITU-T Recommendation I.462 (also published as ITU-T Recommendation X.31 (11/95)), ITU-T Recommendation I.463 (also published as ITU-T Recommendation V.110 [34]): "ISDN Overall Network Aspects and Functions, User Network Interfaces".
[36]
ITU-T Recommendation Q.931 (1998): "ISDN user network interface layer 3 specification for basic call control".
[37]
ETSI ETR 018 ed.4 (1995-11): "Integrated Services Digital Network (ISDN), Application of the Bearer Capability (BC), High Layer Compatibility (HLC) and Low Layer Compatibility (LLC) information elements by terminals supporting ISDN services".
[38]
ISO/IEC 6429: 1992: "Information technology - Control functions for coded character sets".
[39]  Void.
[40]  Void.
[41]  Void.
[42]
ITU-T Recommendation V.120 (10/96): "Support by an ISDN of data terminal equipment with V-Series type interfaces with provision for statistical multiplexing".
[43]
TS 23.034: "High Speed Circuit Switched Data (HSCSD) - Stage 2".
[44]
ISO/IEC 13239 (1997) Information Technology: "Telecommunications and information exchange between systems - High-level data link control (HDLC) procedures"
[45]  Void.
[46]
TR 21.905: "Vocabulary for 3GPP Specifications".
[47]
TR 25.990: "Vocabulary for UTRAN".
→ to date, withdrawn by 3GPP
[48]
TS 25.322: "Radio Link Control (RLC) protocol specification".
[49]  Void.
[50]
Mobile Internet Access Forum: "PIAFS Specification Ver. 1.1, 2.1".
[51]
ITU-T Recommendation V.80 (08/96): "In-band DCE control and synchronous data modes for asynchronous DTE".
[52]
TS 43.045: "Technical realization of facsimile group 3 service - transparent".
[53]
TS 45.001: "Physical layer on the radio path; General description".
[54]
TS 22.034: "High Speed Circuit Switched Data (HSCSD); Stage 1".
[55]
TS 23.107: "Quality of Service QoS concept and architecture".
[56]
TS 48.020: "Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface".
[57]
TS 22.001: "Principles of circuit telecommunication services supported by a Public Land Mobile Network (PLMN)".
[58]
ITU-T Recommendation I.440: (also published as ITU-T Recommendation Q.920 [71]).
[59]
ITU-T Recommendation I.450: (also published as ITU-T Recommendation Q.930 [72]).
[60]
ITU-T Recommendation H.223 (07/01): "Multiplexing protocol for low bit rate multimedia communication".
[61]
ITU-T Recommendation H.245: "Control protocol for multimedia communication".
[62]
ITU-T Recommendation V.21 (11/88): "300 bits per second duplex modem standardized for use in the general switched telephone network".
[63]
ITU-T Recommendation V.22 (11/88): "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".
[64]
ITU-T Recommendation V.22bis (11/88): "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 ".
[65]
ITU-T Recommendation V.26ter (11/88): "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".
[66]
ITU-T Recommendation V.31 (11/88): "Electrical characteristics for single-current interchange circuits using optocouplers".
[67]
ITU-T Recommendation V.32 (03/93): "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".
[68]
ITU-T Recommendation V.34 (02/98): "A modem operating at data signalling rates of up to 33 600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits".
[69]
ITU-T Recommendation V.42 (03/02): "Error-correcting procedures for DCEs using asynchronous-to-synchronous conversion".
[70]
ITU-T Recommendation X.30 (03/93): "Support of X.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by an Integrated Services Digital Network (ISDN) ".
[71]
ITU-T Recommendation Q.920 (03/93): "ISDN user-network interface data link layer - General aspects".
[72]
ITU-T Recommendation Q.930 (03/93): "ISDN user-network interface layer 3 - General aspects".
[74]
TS 23.146: "Technical realisation of facsimile Group 3 service - non-transparent".
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3  Definitions and abbreviationsWord‑p. 11

3.1  DefinitionsWord‑p. 11

The term 'Mobile Station' ( MS ) in the present document is synonymous with the term 'User Equipment' (UE ) as defined in TR 21.905.
The term 'TE2' in the present document is synonymous with the term 'TE' as defined in TR 21.905.
The term 'MT2' in the present document is synonymous with the term 'MT' as defined in TR 21.905.
For the purposes of the present document the following terms and definitions given in TR 21.905 and the following apply:
A/Gb mode:
indicates that the text applies only to a system or sub-system which operate in A/Gb mode of operation, i.e. with a functional division that is in accordance with the use of an A or a Gb interface between the radio access network and the core network
Iu mode:
indicates that the text applies only to a system or a sub-system which operates in Iu mode of operation, i.e. with a functional division that is in accordance with the use of an Iu-CS or Iu-PS interface between the radio access network and the core network
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3.2  AbbreviationsWord‑p. 11

For the purposes of the present document, the abbreviations given in TR 21.905 and 3GPP TR 25.990 [47] and the following apply:
CALL PROC
CALL PROCEEDING
CALL CONF
CALL CONFIRMED
CONNACK
CONNECT ACKNOWLEDGEMENT
EDGE channel
A general term referring to channels based on 8PSK modulation; i.e. TCH/F28.8, TCH/F32.0, and TCH/F43.2.
FTM
Frame Tunnelling Mode
PIAFS
PHS Internet Access Forum Standard
PHS
Personal Handyphone System

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