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5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 3.2 Handover | |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 3.2.1 Definitions | The following case are required:
i) handover between physical channels of the same Base Station System (BSS). This capability could be used in the following situations:
- when the physical channel carrying the call is subject to interference or other disturbances;
- when a physical channel or channel equipment carrying... |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 3.2.2 Procedures | The procedures are described in Technical Specification GSM 03.09. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 3.3 Call re-establishment | Re-establishment of a call may be performed when a traffic channel (TCH) has been lost during the call, e.g. when a handover could not be completed in time.
Call re-establishment is only performed on TCHs and when the call is in the connected state (see Technical Specification GSM 04.08). The procedures are specified i... |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4 Additional network functions for call handling | |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.1 Queuing | As a PLMN option MS originating and/or MS terminating calls may be queued at the BSS. (NOTE: this queuing is additional to that for normal call handling). However, the following condition must be met:
- for MS terminating calls the queuing must not conflict with abnormal release conditions in the fixed network. In gene... |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.2 Off-Air-Call-Set-Up (OACSU) | |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.2.1 General | OACSU may be implemented in PLMNs in order to increase the call handling capacity of the PLMN.
OACSU may be implemented in PLMNs on an optional basis subject to the following conditions:
i) OACSU should not be used for calls to an international number;
ii) OACSU should not be used for incoming international calls, ex... |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.2.2 Signalling procedures | Signalling procedures supporting OACSU are specified in Technical Specification GSM 04.08. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3 Security related services | PLMNs will offer three security related services on the radio path: confidentiality of the user identity, confidentiality of user data and confidentiality of signalling information elements and connectionless user data. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.1 Identity confidentiality | This service provides for the privacy of the identities of subscribers. An intruder cannot identify which subscriber is using a certain resource on the radio path. Instead of IMSI a temporary identity is used. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.1.1 Circuit switched services | This identity (TMSI) is a local number only valid in a given location area. The TMSI is allocated by the VLR and is sent to the MS in a ciphered mode, when ciphering is available as a network option. The IMSI and IMEI should also be transmitted in ciphered mode, whenever the procedure allows this, and when ciphering is... |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.1.2 Packet switched services | The packet temporary mobile subscriber identity (P-TMSI) is a local number only valid in a given routing area. The P-TMSI is allocated by the SGSN and is sent to the MS in a ciphered mode, when ciphering is available as a network option.
The structure of the TLLI is defined in Technical Specification GSM 03.03. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.2 User data confidentiality | This service provides for the confidentiality of anything transmitted on a traffic channel. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.2.1 Circuit switched services | Encryption/decryption is done in the MS and BSS with a key which is calculated in both the MS and network. Detailed information is given in Technical Specification GSM 03.20. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.2.2 Packet switched services | Encryption/decryption is done in the MS and SGSN with a key which is calculated in both the MS and network. Detailed information is given in Technical Specification GSM 03.20. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.3 Signalling Information Element Confidentiality | This service provides for the confidentiality of anything transmitted on a signalling channel |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.3.1 Circuit switched services | Signalling information to control the service offered to a subscriber or connectionless user data can be encrypted/decrypted. Encryption/decryption is done in the MS and BSS with a key which is calculated in both the MS and the network. Detailed information is given in Technical Specification GSM 03.20. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.3.3.2 Packet switched services | Signalling information to control the service offered to a subscriber can be encrypted/decrypted. Encryption/decryption is done in the MS and SGSN with a key which is calculated in both the MS and the network. Detailed information is given in Technical Specification GSM 03.20. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.4 Discontinuous Reception | Discontinuous reception is a technique used to reduce the battery consumption ofMSs. The operation of the technique is specified in Technical Specification GSM 03.13. This function must be supported by the network, but is optional forMSs. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.5 Discontinuous Transmission | Discontinuous transmission is a technique used to reduce overall interference level on the radio interface, and to reduce the battery consumption in the MSs. The operation of the technique is specified in Technical Specification GSM 05.08. This function must be supported by the MSs, whereas only the receiver requiremen... |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 4.6 Support of DTMF | DTMF is supported as defined in Technical Specification GSM 03.14. |
5a0e7a8690c6d7a6c171103231d5c462 | 03.01 | 5 Network management oriented network functions | Network management functions are dealt with in the 12 series of GSM Technical Specifications. An overview is given in Technical Specification GSM 12.00.
Annex A (informative):
Change Request History
Change history
SMG No.
TDoc. No.
CR. No.
Section affected
New version
Subject/Comments
SMG#07
4.0.4
ETSI Publication
SMG... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 1 Scope | The present document describes the support of Videotex service within the GSM PLMN network, taking into account the service definition as per CCITT Recommendation F.300 and Bearer Services specified in GSM 02.02 for a GSM PLMN. |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 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 publication, edition number, version number, etc.) or non‑specific.
• For a specific reference, subsequent revisions do not apply.
• Fo... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 2.1 Abbreviations | In addition to those below, abbreviations used in the present document are listed in GSM 01.04.
AU Access Unit
SBVT Syntax Based Videotex Terminal
VAP Videotex Access Point
VSC Videotex Service Centre
VTX host The computer dedicated to Videotex service |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 3 Service definition | The Videotex service is an interactive service that by means of proper access points and standardized procedures provide the access to data base information stored in host computers external to the PLMN, via public telecommunication networks.
The basic elements considered for a Videotex system are:
- the user terminal;... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 3.1 Videotex service in the GSM context | Figure1 shows the basic concept underlying all the GSM Bearer Services, as defined in GSM 02.02.
The most general case is the GSM PLMN interworking with a Transit Network (PSTN and/or ISDN, none), interconnected to a Terminating Network (PSPDN, PSTN and/or ISDN).
Figure 1/03.43: GSM Bearer Service scheme
As the informa... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 4 Network architecture | As identified in CCITT Recommendation F.300, various configurations are permitted for the structure of a Videotex system. A terminal can be connected to a Videotex host server:
- directly by a telecommunication network;
- via a Packet Assembly/Disassembly (PAD);
- via a Videotex Access Point (VAP);
- via a Videotex Ser... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 4.1 Videotex host directly connected to PSTN/ISDN | When it is assumed that the Videotex centre is directly connected to the PSTN/ISDN, the network scheme is as shown in figureig.2 /03.43.
Figure 2/03.43: VTX host directly connected to PSTN/ISDN
With reference to the general scheme in figure1/03.43, the terminating network (in this case working as transit network as wel... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 4.2 Videotex host accessed via PAD | Figure 3/03.43 summarizes this configuration, outlining all possible network alternatives.
Figure 3/03.43: VTX host accessed via PAD
The main service alternative concerns basic/dedicated PAD access.
In case of basic PAD access, the transit network (PSTN and/or ISDN) is utilized to access the PAD, remotely located with ... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 4.3 Videotex host accessed via VAP | Figure 4/03.43 summarizes this configuration, outlining all possible network alternatives.
Figure 4/03.43: VTX host accessed via VAP
Circuit Mode access to the VAP via ISDN transit network (and BS 3x) is according to ETS 300 079 and ETS 300 080.
Concerning Packet Mode access to VAP, again the main choice concerns basic... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 4.4 Videotex host accessed via VSC | Though the Videotex Access Function is explicitly separate with respect to the Videotex host, no impact results on the overall Network architecture.
Actually the VSC can be considered a front-end function of the same Videotex host (either physically separate or integrated), so that all the above configuration in princi... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 5 Reference configuration of the Mobile Station (MS) | The following types of reference configuration of the MS are possible:
Figure 5/03.43: Reference Configuration of the MS
The definitions of the functional blocks shown in figure 5 are reported in GSM 04.02.
Concerning specific Videotex functions of the terminal, full support of end-to-end protocols for Syntax-based Vid... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 6 Bearer Service configuration and settings | Support of Videotex service on the the GSM PLMN is via GSM standard Bearer Services, as specified in various GSM Technical Specificationa. In the following specific reference on the main technical aspects are reviewed. |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 6.1 Connection Types | Transparent or non-transparent network support can be requested to the GSM PLMN for Videotex service.
The information transfer protocol models are those in figure 6/GSM 03.10, models 1a, 2a, 3a, 4a for ISDN-related MS configurations, and models 1b, 2b, 3b, 4b for PSTN-related MS configurations.
Concerning "Circuit mode... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 6.2 Terminal Adaption functions | The TAFs used for Videotex are the asynchronous and synchronous standards defined in GSM 07-series; rate adaption functions are those specified in GSM 04.21 and GSM 08.20. |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 6.3 Signalling aspects | All GSM standard rates (up to 9 600 bit/s) can be used for Videotex on a GSM PLMN; appropriate settings in BC-IE and LLC (where applicable) fix the rate on the GSM connection, and identify the voiceband modem to be used (when applicable) by the IWF.
When a 1 200/75 bit/s Bearer Capability is requested, the 75 bit/s rat... |
157bacc4edc4bb5d3eed6ec0265827dd | 03.43 | 6.4 Network interworking | Ad-hoc Specifications are devoted in the GSM normative to explicitly cover the aspects of PLMN interworking; being Videotex service a generic application running on top of GSM standard Bearer services, all technical aspects in those GSM specifications apply.
The reference are:
- GSM 09.07, which details interworking re... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 7 Indicates GSM Phase 2+ Release 1998; | x the second digit is incremented for technical enhancements, corrections, updates, etc
y the third digit is incremented when editorial only changes have been incorporated in the specification.
National transposition dates
Date of adoption of this EN:
21 July 2000
Date of latest announcement of this EN (doa):
31 Octobe... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 1 Scope | The present document defines the stage 2 description for the Cordless Telephony System (CTS) based on GSM radio. As the second stage of a three-level structure, it is derived from the stage 1 service description.
As mentioned already in the stage 1 description, a phased approach is indispensable to have an early first ... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 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 publication, edition number, version number, etc.) or non‑specific.
• For a specific reference, subsequent revisions do not apply.
• Fo... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 3 Definitions and abbreviations | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 3.1 Definitions | Besides the definitions according to the CTS stage 1 service description [2] the following definitions are applicable to the present document:
Fixed network: A PSTN or ISDN network.
Access network: the network on which the CTS-FP is connected and which carries the incoming and outgoing calls to the CTS-FP. It could be ... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 3.2 Abbreviations | The following list describes the abbreviations and acronyms used in the present document. The GSM abbreviations explained in GSM 01.04 [1] are not included below.
CTS Cordless Telephony System
CTS FRA CTS Frequency allocation functional entity
CTS HLR CTS Home Location Register Functional entity
CTS-FP CTS-Fixed Part
C... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4 Main concepts | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.1 CTS definition | The CTS operator can provide a CTS service which allows (using a modified GSM radio interface) to provide a cordless telephone service attached to the fixed network or to a cellular network. The services offered by CTS are limited to the type of network to which the CTS-FP is connected. In order to offer this service t... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.2 CTS Network | A CTS network is defined to be made up of one or more CTS cells. When a CTS network has more than one cell these cells are synchronised (in frequency, at TDMA frame edges and TDMA frame number) on the radio interface. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.3 CTS Role models | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.3.1 CTS FP owner's role model | CTS role model for a CTS FP subscriber
In order to receive a valid CTS-GFL the CTS-FP owner needs to have a subscription (2) with a CTS operator. This subscription is materialised by a CTS-SIM card stored in the CTS-FP. The CTS operator has an agreement (3) with a DPLMN part of a GSM operator1 to use its frequencies fo... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.3.2 CTS MS subscriber's role model | CTS MS subscriber's role model
The CTS-MS subscriber has a valid subscription (1) with a GSM operator who allows CTS operations. In case of roaming, the VPLMN shall confirm the authorisation to do CTS operations to this CTS-MS.
The CTS MS subscriber has agreement (2) with one CTS-FP owner that allows him to enrol on hi... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.4 CTS Radio interface | The CTS radio interface is based on the use of a modified GSM radio interface as specified in [5].
The concept is to construct a modified GSM radio interface which requires no change of ME hardware, only software need be changed. The modified GSM radio interface shall (on both uplink and downlink) only cause minimal di... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.4.1 Adaptive Frequency Allocation | In order to minimise interference between CTS networks and GSM networks, an Adaptive Frequency Allocation (AFA) mechanism is adopted, where by the CTS FP chooses frequencies within a valid GFL where the up link and down link is interfered the least. The concept and the mechanisms used are described in more detail in [5... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.4.2 Total Frequency Hopping | To reduce further the possibility of interference (with the GSM PLMNs and others CTS-FP/MS pairs) a Total Frequency Hopping (TFH) mechanism is adopted. The concept of TFH and the mechanisms used are described in more detail in [5]. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.4.3 CTS and GSM compatibility issues | CTS service cannot be offered to existing mobile implementations without a change of software.
Compatibility issues for GSM mobiles which are not operating in CTS mode may be solved by two ways:
• the CTS radio interface is designed in order to create minimum disturbance to existing mobile implementations as specified ... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.5 CTS operational requirements | The CTS operator together with agreements from the GSM operator can define the coverage conditions under which CTS service can be offered to the subscriber. The following coverage conditions are identified:
• GSM coverage from the DPLMN. That is to say where the coverage of the DPLMN meets the cell (re)selection criter... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.5.1 GSM coverage from DPLMN | In this case the CTS FP's coverage is fully within the coverage of the DPLMN.
Figure 1: GSM coverage from DPLMN |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.5.2 Limited GSM coverage from DPLMN | Two cases are identified.
Figure 2: Limited GSM coverage from DPLMN
The coverage of the DPLMN is partially achieved in the range of the CTS FP.
Figure 3: Limited coverage from DPLMN within T TRANSPORT
The coverage of the DPLMN is not achieved in the range of the CTS FP but is located within a distance, such that, the t... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.5.3 No GSM coverage from DPLMN | The time between leaving DPLMN and entering the CTS FP coverage is longer than T_TRANSPORT.
Figure 4: No GSM coverage |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.6 CTS Reference Model | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.6.1 General CTS Reference Model | The general reference model of the CTS service has the following additional network elements:
• the CTS-HLR is the functional entity handling CTS-FP subscriptions;
• the CTS-SN is the functional entity performing the communication with CTS-FP via the Cf interface which uses the fixed network as a bearer.
The Cd' interf... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.6.2 Simplified CTS reference model (limited enrolment control) | Initial CTS introduction should may allow an easy introduction of the service. This section deals with simplified CTS reference model.
Simplification of the CTS reference model can be achieved if the CTS operator chooses that enrolment is only checked locally in the CTS-FP see section 4.9.1 Enrolment control at the CTS... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.6.3 Simplified CTS reference model (Licence exempt CTS band) | This section is relative to the usage of CTS capable devices with a CTS license exempt radio band.
In this case the frequency allocation for CTS usage is defined directly by national authorities. All the radio information relative to CTS usage are stored in the CTS-FP by the CTS-FP manufacturer. These radio information... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.6.4 CTS connected to PLMN reference model | In the case of a CTS-FP connected to a GSM network the general reference model is modified as described below:
Figure 7: Simplified CTS reference model (limited enrolment control)
The Cf interface between the CTS-FP and the fixed network is replaced by a GSM standard Um interface with a GSM network. On this Um interfac... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7 GSM Operator control of CTS service | The GSM operator has control of the CTS service that is operating in his PLMN. The stage 3 CTS specifications shall ensure that it shall not be possile to operate a CTS service without the permission of the GSM operator.
When a CTS capable mobile accesses a GSM PLMN it will be provided with information in order to allo... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.1 CTS System control | Control of the CTS operation depends of the frequency scenario of the country (or region) in which CTS service is to be provided. Two scenarios are foreseen:
• licence exempt frequency band is used for CTS operation; this is where the relevant authority in a country (or region) has allocated a frequency band for CTS se... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.2 GSM Operator control of CTS frequency list | One of the major concepts of CTS is the control of the frequencies for use by the CTS-FPs. The frequency allocation for CTS operation is termed the GFL (Generic Frequency List).
The GFL is the frequency allocation that either a GSM operator has agreed to give to the CTS operator for the operation of a CTS service withi... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.3 CTS system initialisation for license exempt frequency band for CTS operation | In this case the frequency allocation for CTS usage is defined directly by national authorities. All the radio information relative to CTS usage are stored in the CTS-FP by the CTS-FP manufacturer. These radio information are linked with a geographical information which informs the CTS-FP in which country (or region) t... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.4 CTS system initialisation with DPLMN coverage and limited coverage | In order to avoid that the CTS service be too cumbersome to own, the initialisation of the CTS FP is such that the precise GFL for CTS operational purposes may be obtained sometime after CTS operation has been started. This means that for a short period of time the CTS-FP need not be using the GFL that is best suited t... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.4.1 First stage CTS-FP initialisation (Temporary GFL allocation) | The CTS-FP SIM shall have a telephone number which is preloaded by the CTS operator when the service is subscribed. This Telephone number is used by the CTS-FP to call the CTS-SN. The CTS-SN can verify the validity of the subscription and perform authentication of the CTS-FP at this stage. The CTS-FP shall also perform... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.4.2 Second stage CTS-FP initialisation (GFL confirmation) | As part of the signalling procedures the CTS-FP shall demand the CTS-MS to provide location information to the CTS‑FP see "9.1.2 Update of CTS FP frequencies". The CTS-FP stores this information and provides it to the CTS‑SN the next time the CTS-FP contacts the CTS-SN. The CTS-SN/CTS-FRA uses this information to alloc... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.5 CTS system initialisation without DPLMN coverage | The initialisation of a GFL without DPLMN coverage is FFS. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.6 GFL update | Once a GFL is confirmed, the GFL may be updated by the operator as part of the regular changes he makes in his frequency plan of the network. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.6.1 CTS FP GFL update | Subsequent GFL allocations need not involve the CTS-MS and can be made directly by dialogue between the CTS–FP and the CTS-SN.
In order that frequency planning of the DPLMN can be taken into account when the GFL is updated the CTS-FP with the help of the CTS-MS(s) collects the identity of DPLMN cells which surround the... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.7.7 Erasure of GFL in the CTS FP | The CTS FP will erase a GFL when the period of validity for a GFL expires. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.8 De-initialisation of CTS FP | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.8.1 CTS Operator control mode | A CTS FP will become de-initialised if the CTS FP is:
• Disconnected from the mains power for a period of time [10 minutes]; and/or
• Disconnected from the PSTN connection for a period of time [10 minutes]; and/or
• When the CTS-SIM is removed from the CTS-FP;
• When specifically commanded by CTS SN.
In addition to thi... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.8.2 Licence exempt mode | A CTS-FP will de-initialise itself if the country code reported by any attached mobiles does not correspond with the country code stored in the CTS-FP. This is made according with the following procedure:
• In order to avoid illegal roaming of CTS-FP, the CTS-MS(s) collects the identity of DPLMN cells which surround th... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9 CTS MS Enrolment | Enrolment is the process of obtaining permission to use the CTS service of a CTS-FP by a CTS-MS. The enrolment process may involve the verification of agreements between a CTS-MS subscriber with a CTS operator, a GSM operator and a CTS-FP subscriber and the exchange of information for control of the CTS subscription at... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9.1 Enrolment control at the CTS-FP | Enrolment control at the CTS-FP can be controlled by the operator either:
• pre-populating the SIM of the CTS FP with IMSI ranges; or
• by the CTS-SN during signalling exchanges between the CTS-SN and CTS-FP.
In each of the above cases the CTS-FP is given information as to the range of IMSI values [16 ranges] that the ... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9.2 Enrolment control at the CTS-SN | The CTS-SN can control initial enrolment and surveys enrolment for previously enrolled CTS-MS.
The enrolment process performed at the CTS-SN gives a CTS-MS the right to have CTS services on a CTS-FP for a certain period of time (determined by the CTS operator). This period of time shall not be capable of being altered ... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9.2.1 Initial enrolment at the CTS-SN | The CTS-FP may contact the CTS-SN via the access network to demand enrolment of a CTS-MS. In this case the IMSI of the CTS-MS is given to the CTS-SN.
In this case the CTS-SN shall perform range checking on the IMSI to verify roaming agreements and may interrogate (under operator control) the HLR of the CTS-MS in order ... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9.2.2 Subsequent enrolment at the CTS-SN | Subsequent enrolment is required to check that enrolled CTS-MSs still have the right of using CTS service. As part of the supervisory activities the CTS-FP requires to contact the CTS-SN at specific points in time either for reallocation of the GFL or other supervisory procedures. During these communications the CTS-SN... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9.3 Agreement between the CTS FP Subscriber and CTS MS subscribers | The CTS FP subscriber chooses to give the right to a CTS MS subscribers to have access to his CTS FP.
This is performed by the CTS FP owner entering information into the CTS FP as defined by [4].
The CTS FP will only allow the CTS MS to have access once the CTS operator authorisation procedure has been successfully com... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.9.4 CTS authorisation check of enrolment of a CTS MS onto a CTS FP | Enrolment of the CTS MS to a CTS FP involves:
• Optional Authentication of the CTS MS by the HPLMN via the CTS-SN;
• Optional Subscription check for the CTS MS by the HPLMN via the CTS-SN.
Confirmation of enrolment requires mutual authentication to taken place as described in [4]. The enrolment of a CTS-MS has an assoc... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.10 De-enrolment of CTS MS from a CTS-FP | The CTS FP can receive a command to remove the enrolment of a specific CTS MS at any time see [4].
If the validity period for a particular CTS MS expires then the specific CTS MS shall become de-enrolled.
De-enrolment can be commanded by either the CTS-FP subscriber or the CTS-SN. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.10.1 Mutual autentication | Mutual authentication is a concept whereby the CTS MS/CTS FP can check that the controlling network is a valid network. This protection mechanism is needed to ensure that both GSM and CTS operator can protect themselves from intrusion see ref [4]. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.11 CTS MM and CM layers | The message exchange on the Um* interface shall be (as close as possible) to the GSM 04.08 interface. The exceptions to this are the security procedures as specified in [4] which may be substituted in place of the normal GSM procedures. The CTS standard still allows the use of the normal GSM authentication and cipherin... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.12 CTS MM and CM layers on the fixed network side | The CTS standard specifies the protocols on the CTS Um* interface only. The standard specifying the split between these layers on the fixed network side is left open to implementation. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.13 CTS Mobility services | CTS mobility services are to be specified for the CTS Um* interface only. Mobility in the fixed network (i.e. towards other nodes in the fixed network) is out of scope of this recommendation. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.13.1 CTS support in idle mode | Cell selection and reselection mechanisms are described in [5].
It should be possible for the CTS MS subscriber to choose preferences between either GSM or CTS coverage. When in CTS coverage, it should be possible that the user set preferences between different CTS coverage. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.13.2 CTS attach and detach | CTS mobility services offer the ability to attach an enrolled CTS-MS to a CTS-FP. The camping of a CTS-MS on a CTS-FP requires that the CTS-MS performs an attachment to the CTS FP.
In the case where a CTS-MS is disabled (i.e. turned off, etc) whilst attached to the CTS-FP, the CTS-MS can, under certain circumstances, i... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.14 CTS CM layer | The CTS CM layer is specified for the local CTS system only. The CTS CM layer in the fixed network is out of scope of the present document.
The CTS CC layer is specified in GSM 04.08 section 5. The CTS CC layer is modified in order to introduce extra functions (eg Hook Flash) as specified in [4] |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.14.1 CTS service indication | Once attached to a CTS-FP the MS shall indicate that CTS service is available.
The CTS user can define a name (alphanumeric name, icon, etc) for each of the CTS cells to which it has access (i.e. attached). The MS will, when attached and in coverage of a CTS cell and if required by the user, indicate to the user the cu... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 4.15 Subscriber information for CTS | A CTS-MS subscriber may be enrolled on several CTS FPs. It shall be possible for the subscriber to establish an order of preference between the allowed CTS-FPs.
Subscriber specific CTS information can be stored and managed in the HLR.
In addition to subscriber details in the HLR, it is also necessary for subscriber spe... |
fcc930975597116eb21de958d20d3f3d | 03.56 | 5 Transmission | No specific requirements are identified. |
fcc930975597116eb21de958d20d3f3d | 03.56 | 6 Information storage | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 6.1 Information managed per CTS-MS subscriber | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 6.1.1 Stored in the CTS-MS SIM | |
fcc930975597116eb21de958d20d3f3d | 03.56 | 6.1.2 Stored in the HLR | CTS MS subscriber CTS subscription may be stored in the HLR. |
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