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101 953-2-1
6.3 Tests for pass band loss requirements (on-hook)
6.3.1 Tests for on-hook requirement for the case of high impedance injection Table 21 Test case name: On hook requirement for the case of high impedance injection Reference: TS 101 952-2-1 [2], clause 6.4.1 Test purpose: To evaluate the magnitude of voltage gain of the splitter in the range 200 Hz to 2 800 Hz for the o...
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6.4 Tests for pass band loss requirements (off-hook)
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6.4.1 Tests for off-hook pass band insertion loss
NOTE: To maintain the same structure as in TS 101 952-2-1 [2] this clause has been added. However, it will be kept empty as the tests for off-hook pass band insertion loss are covered by the tests for off-hook pass band insertion loss distortion.
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6.4.2 Tests for off-hook pass band insertion loss distortion
Table 27 Test case name: Off-hook pass band insertion loss and insertion loss distortion Reference: TS 101 952-2-1 [2], clauses 6.5.1 and 6.5.2 Test purpose: To evaluate the insertion loss in the off-hook case Test configuration: See Test Set-up; DUT not configured Test set-up: U F R F Feeding Bridge A R DC Signal V I ...
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6.5 Tests for return loss requirements
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6.5.1 Tests for return loss requirements options A and B
Table 30 Test case name: Return Loss Requirements for option A and B Reference: TS 101 952-2-1 [2], clause 6.6 Test purpose: To evaluate the splitter return loss when tested with the test parameters as given in the related standards Test configuration: See Test Set-up; DUT not configured ETSI ETSI TR 101 953-2-1 V1.1.1...
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6.6 Tests for requirements relating to metering pulses
6.6.1 Tests for requirements relating to metering pulses at 12 kHz or 16 kHz Table 33 Test case name: Requirements relating to metering pulses at 12 kHz or 16 kHz Reference: TS 101 952-2-1 [2], clauses 6.5.1 and 6.5.2 Test purpose: To evaluate the insertion loss in the off-hook case Test configuration: See Test Set-up;...
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6.7 Tests for unbalance about earth
TS 101 952-2-1 [2] requires the unbalance about earth to be measured up to 12 MHz under the application of DC feeding. Applying a feeding bridge and a holding circuit to an unbalance test set-up means a significant impact to the set-up´s balance about earth, especially at higher frequencies. However, the evaluation of ...
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6.7.1 Tests for the unbalance about earth (LCL/LCTL) without feeding
Table 37 Test case name: Unbalance about earth without feeding Reference: TS 101 952-2-1 [2], clause 6.8.1 Test purpose: To evaluate the longitudinal conversion (transfer) loss of a splitter when no feeding is applied Test configuration: See Test Set-up; DUT not configured Test set-up: 150 Ω Uo Splitter (DUT ) LINE a b...
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6.8 Tests for VDSL band requirements
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6.8.1 Tests for On-hook loss for VDSL over POTS splitters
Table 43 Test case name: On-hook loss for VDSL over POTS splitters Reference: TS 101 952-2-1 [2], clause 6.9.1 Test purpose: To evaluate the on-hook loss (voltage drop) of the splitter from LINE to POTS for signals in the VDSL frequency range Test configuration: See Test Set-up; DUT not configured Test set-up: Feeding ...
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6.8.2 Tests for Off-hook isolation
Table 46 Test case name: Off-hook isolation Reference: TS 101 952-2-1 [2], clause 6.9.2 Test purpose: To evaluate the isolation of the POTS port to VDSL signals and vice versa in the upper frequency range, when POTS is off-hook Test configuration: See Test Set-up; DUT not configured Test set-up: Feeding Bridge Holding ...
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6.9 Tests for noise
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6.9.1 Tests for audible noise level
Table 49 Test case name: Audible noise level Reference: TS 101 952-2-1 [2], clause 6.10.1 Test purpose: To evaluate the unwanted noise signal which is produced in the splitter itself without any other signals applied Test configuration: See Test Set-up; DUT not configured NOTE: This test only applies, if the splitter u...
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6.9.2 Tests for VDSL band noise level
Table 52 Test case name: VDSL band noise level Reference: TS 101 952-2-1 [2], clause 6.10.2 Test purpose: To evaluate the unwanted noise signal which is produced in the splitter itself without any other signals applied Test configuration: See Test Set-up; DUT not configured NOTE: This test only applies, if the splitter...
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6.10 Tests for distortion
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6.10.1 Tests for POTS band intermodulation distortion
Table 55 Test case name: POTS band intermodulation distortion Reference: TS 101 952-2-1 [2], clause 6.11.1 Test purpose: To evaluate the unwanted POTS signal distortion caused by intermodulation effects in the splitter Test configuration: See Test Set-up; DUT not configured Test set-up: Noise Level meter Feeding Bridge...
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6.11 Tests for signal delay Impacts
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6.11.1 Tests for group delay distortion
Table 59 Test case name: Group delay distortion Reference: TS 101 952-2-1 [2], clause 6.12 Test purpose: To measure the increase in group delay distortion in the POTS band caused by the splitter with VDSL load, relative to the lowest measured delay without the splitter, when tested with the test parameters as given in ...
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6.12 Tests for requirements related to POTS effects
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6.12.1 Tests for requirements related to POTS transient effects
Table 62 Test case name: Requirements related to POTS transient effects Reference: TS 101 952-2-1 [2], clause 6.13 Test purpose: To measure the increase in group delay distortion in the POTS band caused by the splitter with VDSL load, relative to the lowest measured delay without the splitter, when tested with the test...
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1 Scope
The purpose of the present document is to specify the rules for the management of the Standard GSM GPRS Encryption Algorithm 2 (GEA2). The management structure is defined in clause 4. This structure is defined in terms of the principals involved in the management of the GEA2 (ETSI, ETSI SMG, GEA2 Custodian and Approved...
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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...
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3 Abbreviations
For the purposes of the present document, the following abbreviations apply: GEA2 GSM GPRS Algorithm 2 GPRS General Packet Radio Service GSM Group Special Mobile SAGE Security algorithms Group of Experts
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4 GEA2 Management Structure
The management structure is depicted in Figure 1. The figure shows the three principals involved in the management of the GEA2 and the relationships and interactions between them. ETSI is the owner of the GEA2 algorithm. The ETSI Secretariat together with ETSI SMG sets the approval criteria for receipt of the algorithm...
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5 Distribution Procedures
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5.1 Distribution by GEA2 Custodian
The following procedures for distributing the GEA2 to Approved Recipients are defined with reference to Figure 1. 1) The GEA2 Custodian receives a written request for N copies of the GEA2 Specification (see note 1), where N should not be bigger than six. 2) The GEA2 Custodian checks whether the requesting organization ...
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5.2 Transfers by a Beneficiary
An organization which has already been approved and has obtained GEA2 specification may transfer one or more of these specifications to a second organization which requires the specification. ETSI ETSI TR 101 740 V1.1.1 (1999-08) 9 In this case, the first organization shall ensure that the second organization meets the...
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6 Approval Criteria
The approval criteria are set by the ETSI Secretariat together with ETSI SMG and maintained by the GEA2 Custodian. The GEA2 Custodian may recommend changes to these criteria. In order for an organization to be considered an Approved Recipient of the GEA2 it shall satisfy at least one of the following criteria: C1 The o...
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7 The GEA2 Custodian
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7.1 Responsibilities
The GEA2 Custodian is expected to perform the following tasks: T1 To approve requests for the GEA2 by reference to the Approval Criteria given in clause 6. T2 To exchange the Confidentiality and Restricted Usage Undertaking with Approved Recipients as described in clause 5. T2bis To obtain the Administrative authorizat...
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7.2 Appointment
The GEA2 Custodian is: ETSI Secretariat The contact person is: Mr Pierre De Courcel Fax +33 4 93 65 47 16 ETSI Email pierredecourcel@etsi.fr F-06921 Sophia Antipolis Cedex France The GEA2 Custodian will ask a fee from the recipient to cover the cost of distribution of the specification document 1 and specification docu...
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1 Scope
The present document gives guidance on the requirements for the provision of relay services in all telecommunications networks. The present document is applicable to all kinds of relay services especially those which enable a text telephone user to converse with a telephone user and to relay services which enable a tex...
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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...
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3 Definitions and abbreviations
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3.1 Definitions
For the purposes of the present document, the following definitions apply: automatic relay service: service that enables a conversation between two terminals using different communication modes by providing the facility of automatic conversion between the two modes in substantially real time operator: person whose prim...
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3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply: DTMF Dual Tone Multi Frequency EDT European Deaf Telephone GSM Global System for Mobile communication SMS Short Message Service TRS Text Relay Service
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4 General
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4.1 Relay service
A relay service is telecommunications service that enables users of different modes of communication to interact by providing conversion between the modes of communication. Figure 1: Communication via relay service using a telephone network Such a service can be an automatic service using, for example, V.18 modems, to ...
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4.2 Text/text relay service
A text/text relay service is a dedicated relay service, which enables two text telephone users to interact with one another, providing any necessary protocol conversion. The service shall accept calls to and from any terminal compatible with V.18 protocols. The service may be provided through a normal connection over t...
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4.3 Text relay service
A text relay service is a dedicated relay service enabling a text telephone user to interact with a voice telephone user. The conversion between the two modes of communication may typically be provided by means of a human intermediary. The service shall accept calls to or from any text terminal compatible with V.18 pro...
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4.4 Spoken to spoken relay service
A spoken to spoken relay service is a dedicated service that enables communication between speech impaired telephone users and other users by providing skilled assistance between them. This assistance is provided by a specially trained operator. The service would normally be provided through an ordinary connection over...
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4.5 Videophone relay service
A videophone relay service is a dedicated service that enables a deaf signer using a videophone to interact with a voice telephone user. The conversion between the two modes of communication would normally be provided by means of a human intermediary. The service shall accept calls to and from any videophone terminal c...
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4.6 Additional services
The additional services such as call diversion or message storage that are provided on most telephone networks can be made available in conjunction with any form of relay service. These additional services would normally be provided at the user's option at an additional charge, but may alternatively be provided as part...
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5 Service description
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5.1 Basic Text Relay Service (TRS)
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5.1.1 Text/speech conversion
The Text Relay Service should, as its basic service, provide the facility for the conversion of text from a text telephone to voice to a voice telephone and vice versa in substantially real time. All connections set up from the TRS to the text telephone subscriber should be connected in text-mode, so that the recipient...
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5.1.2 Emergency services
The relay service should provide a text user with access to the whole range of public emergency services, preferably via the normal emergency service dialling code.
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5.1.3 Directory enquiry services
The relay service should provide a text user with access to the whole range of national and international directory enquiry services, preferably via the normal directory service dialling code.
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5.1.4 Calling line identification presentation (CLIP)
When a call is made using the relay service, the calling line identity (CLI) that is forwarded to the called party should be the CLI of the originating caller, not that of the relay service. When calling line identity restriction (CLIR) has been activated, the CLI should not be forwarded to the called party. ETSI ETSI ...
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5.1.5 Connected line identification presentation (COLP)
When a user with the COLP service activated makes a call using the relay service, provision should be made to forward the connected line identity to the calling party. When the called party has activated connected line identification restriction (COLR), the connected line identity should be withheld.
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5.1.6 Talk through
The service should provide a speech path in both directions when required so as to permit a voice-to-voice connection.
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5.1.7 Voice messaging
Where a called party has incoming calls diverted to a voice message facility, provision should be made to permit a textphone user to leave a voice message.
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5.1.8 Text messaging
Where a textphone user has incoming calls forwarded to a text message facility, provision should be made to permit a voice telephone user to leave a text message.
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5.2 Basic spoken to spoken relay service
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5.2.1 Text/speech conversion
The spoken to spoken relay service should, as its basic service, provide skilled operator assistance to enable communication between a speech impaired user and any other user.
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5.2.2 Emergency services
The relay service should provide a speech-impaired user with access to the whole range of public emergency services, preferably via the normal emergency service dialling code.
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5.2.3 Directory enquiry services
The relay service should provide a speech-impaired user with access to the whole range of national and international directory enquiry services, preferably via the normal directory service dialling code.
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5.2.4 Calling line identification presentation (CLIP)
When a call is made using the relay service, the calling line identity (CLI) that is forwarded to the called party should be the CLI of the originating caller, not that of the relay service. When calling line identity restriction (CLIR) has been activated, the CLI should not be forwarded to the called party.
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5.2.5 Connected line identification presentation (COLP)
When a user with the COLP service activated makes a call using the relay service, provision should be made to forward the connected line identity to the calling party. When the called party has activated connected line identification restriction (COLR), the connected line identity should be withheld. ETSI ETSI TR 101 8...
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5.2.6 Talk through
The service should provide a speech path in both directions when required so as to permit a voice-to-voice connection.
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5.2.7 Voice messaging
Where a called party has incoming calls diverted to a voice message facility, provision should be made to permit a speech-impaired user to leave a voice message.
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5.2.8 Text messaging
Where a speech-impaired user has incoming calls forwarded to a message facility, provision should be made to permit a voice telephone user to leave a message.
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5.3 Basic videophone relay service
5.3.1 Signing to speech conversion The videophone relay service should, as its basic service, provide skilled operator assistance to enable communication between a signing user and any other user. The signing language used should be the appropriate national sign language. All connections from the videophone relay servi...
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5.3.2 Emergency services
The relay service should provide a signing user with access to the whole range of public emergency services, preferably via the normal emergency service dialling code.
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5.3.3 Directory enquiry services
The relay service should provide a signing user with access to the whole range of national and international directory enquiry services, preferably via the normal directory service dialling code.
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5.3.4 Calling line identification presentation (CLIP)
When a call is made using the relay service, the calling line identity (CLI) that is forwarded to the called party should be the CLI of the originating caller, not that of the relay service. When calling line identity restriction (CLIR) has been activated, the CLI should not be forwarded to the called party.
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5.3.5 Connected line identification presentation (COLP)
When a user with the COLP service activated makes a call using the relay service, provision should be made to forward the connected line identity to the calling party. When the called party has activated connected line identification restriction (COLR), the connected line identity should be withheld.
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5.3.6 Talk through
The service should provide a speech path in both directions when required so as to permit a voice-to-voice connection. ETSI ETSI TR 101 806 V1.1.1 (2000-06) 12
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5.3.7 Voice messaging
Where a called party has incoming calls diverted to a voice message facility, provision should be made to permit a speech-impaired user to leave a voice message.
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5.3.8 Text messaging
Where a speech-impaired user has incoming calls forwarded to a message facility, provision should be made to permit a voice telephone user to leave a message.
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5.4 Additional services
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5.4.1 General
A relay service user should have available all of the normal supplementary services. Where a supplementary service offers the facility for the user to record a voice message, provision should be made for the relay service to record the message on behalf of a user.
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5.4.2 Call forwarding
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5.4.2.1 Call forwarding, text telephony
A supplementary service should be available which permits a text telephone user to have incoming calls forwarded to a text announcement. The message may invite the caller to leave a text message. The text telephone user should be able to interrogate the service to read any messages that have been left. A text telephone...
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5.4.2.2 Call forwarding, video telephony
A supplementary service should be available which permits a videophone user to have incoming calls forwarded to a video announcement. The message may invite the caller to leave a video message. The videophone user should be able to interrogate the service to read any messages that have been left. A videophone user shou...
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5.4.3 Message waiting indication
Where a relay service user has activated a messaging service, means should be available to provide a message waiting indication.
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5.4.4 Alarm calls
Provision should be made on any alarm call service to provide an appropriate text announcement in place of (or in addition to) any voice announcement. Where possible, provision should be made for an equivalent video announcement.
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5.4.5 Do not disturb
Provision should be made on any do not disturb service to provide an appropriate text announcement in place of (or in addition to) any voice announcement. Where possible, provision should be made for an equivalent video announcement. ETSI ETSI TR 101 806 V1.1.1 (2000-06) 13
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5.4.6 Advice of charge
Provision should be made on any advice of charge service to provide an appropriate text announcement in place of (or in addition to) any voice announcement. Where possible, provision should be made for an equivalent video announcement.
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5.4.7 Call progress information
Where a relay service is provided by a dedicated text relay service, call progress information shall be provided in the form of appropriate text messages. Where possible, provision should be made for an equivalent video announcement.
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5.5 Facsimile services
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5.5.1 Fax to text conversion
Any service providing for the central receipt of fax messages and their conversion to a speech message should make provision to provide the conversion into a message suitable for receipt by any text telephone compatible with V.18 protocols. Where possible, provision should be made for an equivalent video message.
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5.5.2 Text to fax conversion
Any service providing for the central receipt of speech messages and their conversion to fax messages should make provision to receive messages from a text telephone in any form compatible with V.18 protocols. Where possible, provision should be made for receipt of an equivalent video announcement.
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5.6 Short message service (SMS)
GSM SMS service centres should have provision to receive messages from a text telephone over the fixed network in any form compatible with V.18 protocols. The service centre shall then reformat the message into that provided by the short message service, for delivery to the mobile station.
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5.7 Paging
Any paging service centre providing for the central receipt of speech messages should make provision to receive messages from a text telephone in any form compatible with V.18 protocols. Where possible, provision should be made for receipt of an equivalent video message.
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6 Call handling
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6.1 Operator procedures
The operator should, in a conversion situation, always inform the user that the call is from a relay service and that the following conversation is going though that relay service. The operator should, in a conversion situation, exchange messages in a neutral way. The operator should try to convey the spirit of all utt...
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6.2 Confidentiality
According to trade practice the operators are prohibited from disclosing the content of any relayed translation. Operators should consider all transactions confidential. The operator may not disclose what has been learned about the individuals, trade secrets, business relations or issues concerning national defence. Pr...
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6.3 Calls to stored voice services
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6.3.1 Messaging services
The operator should assist users to leave and retrieve messages on voice processing systems.
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6.3.2 Transaction services
Using the relay service, the relay service user should be able to receive assistance in using any stored voice service, which requires the use of a tone sender. The operator calls the actual service and translates the spoken message into the appropriate format. The operator should, in agreement with the relay service s...
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6.3.3 Data base access
The operator should provide any special assistance required for accessing on line databases such as for online voting and search of news and train timetables.
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6.4 Profanity, obscenity and illegality
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6.4.1 Conversations
Operators should handle all conversations irrespective of any profane obscene or illegal content. They should be permitted to pass any conversation to another operator a supervisor if they are upset by its content. Illegal activities e.g. drug purchases should be treated as normal calls and be covered by normal confide...
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6.4.2 Obscenity directed to operator
Operators should not be required to tolerate obscenity directed at them. Such calls may be transferred to a supervisor who should try to determine why the caller is using obscenity and to explain that it is inappropriate. ETSI ETSI TR 101 806 V1.1.1 (2000-06) 15
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6.5 Language translation
The conversion of any conversation should be carried out in the language of the Country or region where the relay service is based. Where more than one language exists in that Country or region, conversion into all appropriate languages should be available. Translation into other European languages from that/those used...
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7 System requirements
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7.1 Organization plan
The provider should draw up an organization plan that specifies who has the over all responsibility for the various areas of the relay service. The organization should include a service manager designated by the provider who, among other things, has the overall responsibility for the relay service. The service manager ...
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7.2 System reliability