SIST I-ETS 300 400 E1:2003

• Abstract:

  To specify minimum common requirements for a payphone to be connected to a digital subscriber access in the Integrated Service Digital Network (ISDN) and to define conformance testing.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI I-ETS 300 400 ed.1 (1995-03) - Integrated Services Digital Network (ISDN); Telephony terminals; Payphones

SIST I-ETS 300 400 E1:2003 is the Slovene adoption of I-ETS 300 400 Edition 1 from ETSI. It defines the minimum common requirements for an ISDN payphone terminal and the tests used to check conformance, so it is the document to use when specifying, designing, or verifying payphones for ISDN access.

What does SIST I-ETS 300 400 E1:2003 specify?

SIST I-ETS 300 400 E1:2003 specifies the technical characteristics of a payphone terminal for the 3,1 kHz telephony service on ISDN basic access, and it organizes those requirements into network access, telephony, messages, keypad functions, payment methods, and power-fail behavior. It also includes normative test specifications and an informative annex of optional payphone facilities.

The standard applies to terminal equipment in the TE1 functional group and to terminals connected at the coincident S and T reference point. The introduction also makes clear that it does not set requirements for any particular operating environment.

Annex	What it covers
Annex A	Normative test specifications, including test conditions and checks for audio levels and card return
Annex B	Informative descriptions of optional payphone facilities
Annex C	Informative bibliography

What are the key requirements of SIST I-ETS 300 400 E1:2003?

SIST I-ETS 300 400 E1:2003 focuses on a payphone’s ability to make and control calls, handle payment, present messages, and behave safely when power is restricted or lost. The most important requirements are in clauses 4 to 9, with Annex A defining how compliance is checked.

Network access and emergency calling

Clause 4 requires the terminal to comply with I-ETS 300 245-1 and to be capable of acting as a designated terminal. A switching function may be provided to remove that designation, but emergency calls must be possible without offering payment. In practice, this means the payphone must still reach public emergency services even when no coin, card, or other payment has been inserted.

Telephony behavior

Clause 5 requires the telephony functions to comply with I-ETS 300 245-1 and I-ETS 300 245-2. When speech transmission is meant to be suppressed, for example before payment is validated or after credit expires, the sending path is to be strongly attenuated. If inductive coupling is provided for hearing aids, it must meet ETS 300 381. This matters because the terminal must not leak usable speech before payment, and any hearing-aid support has to match the relevant coupling performance.

User messages

Clause 6 says messages are optional, but if the terminal provides them, they have to match the stimulus that triggered them. The standard expects at least two languages, with English preferred, and it allows spoken, visual, or tactile messages. Speech messages and tones generated by the payphone have defined presentation levels and are checked using Annex A methods. In practice, this means the user guidance must be understandable and consistent, not random or misleading.

Keypad actions

Clause 7 ties keypad operation to the external interfaces. Any control information sent over the D-channel, or any signal appearing at a payment card interface, has to match the key marking. That prevents confusing behavior where a button label and the resulting network or card action do not agree.

Payment methods and card handling

Clause 8 requires support for at least one payment method. Coins or tokens used for prepayment have to be returned if unused when the call ends, unless a follow-on call facility is active. Prepayment cards must also be returned with remaining credit. Credit and charge card interfaces must be compatible with the relevant ISO card standards, and IC cards must meet prEN 1038 plus the electronic-signal and transmission-protocol requirements of EN 726-4. In practice, the terminal must handle payment correctly and return the user’s card or change at the end of the call.

Power-fail behavior

Clause 9 covers what happens when local power is removed. A designated terminal must still support 3,1 kHz telephony, real-time two-way speech, and emergency calling under restricted power conditions. Other terminals must show a “not available” indication if they cannot place calls. The terminal must also avoid falsely retaining payment because of a power failure. This is important for safety and for preventing customer disputes after outages.

Conformance testing

Annex A defines the test environment, the interface to the terminal under test, the equipment used for acoustic measurements, and the tests for returning payment items. Compliance checks include emergency calling without payment, suppression of speech transmission, audio-message levels, and the return of coins, cards, and IC cards.

What terms does SIST I-ETS 300 400 E1:2003 define?

• payphone - Terminal apparatus that allows access to telephony after suitable payment is validated.
• payphone service - A service provided by special equipment that gives access to telecommunications services after payment validation.
• cardphone - A payphone that accepts cards as payment.
• designated terminal - A terminal allowed to draw power from power source 1 under restricted power conditions.
• follow-on call - A facility that lets a call end while keeping payment as credit for the next call.
• Integrated Circuit Card (IC Card) - A microprocessor card that behaves like a set of files that can be read, written, or executed.
• Card Holder Verification (CHV) - A way for the user to prove identity by entering a verification code, and possibly biometric information.
• Terminal Equipment Under Test (TEUT) - The terminal being checked during the conformance tests in Annex A.

Who uses SIST I-ETS 300 400 E1:2003?

SIST I-ETS 300 400 E1:2003 is used by payphone manufacturers, telecom equipment suppliers, test laboratories, network operators, and service providers. Engineers use it to design the terminal functions, quality managers use it to define acceptance checks, and buyers or specifiers use it to compare payment options, message features, and emergency-call behavior. It is also relevant when a terminal must support cards, inductive coupling, or restricted-power operation.

What changed in SIST I-ETS 300 400 E1:2003 from the previous edition?

SIST I-ETS 300 400 E1:2003 corresponds to I-ETS 300 400 Edition 1. The history box identifies March 1995 as the first edition.

Which standards are used with SIST I-ETS 300 400 E1:2003?

Standard	What it contributes
I-ETS 300 245-1	General technical characteristics for telephony terminals and network access behavior
I-ETS 300 245-2	PCM A-law handset telephony characteristics and related measurements
ETS 300 153	Attachment requirements to connect terminal equipment to ISDN basic access and the test environment used in Annex A
ETS 300 381	Performance requirements and testing for inductive coupling to hearing aids
EN 726-4	Application-independent IC card terminal requirements and the card interface protocols
prEN 1038	IC card payphone requirements
ISO 4909, ISO 7810, ISO 7811, ISO 7813	Magnetic stripe and card physical characteristics for credit and charge cards
ITU-T P.57, IEC 651, CCITT P.56	Acoustic test equipment and speech-level measurement methods

Annex C also lists related telecommunication references for charge cards, Advice of Charge, user signalling bearer services, IC card telecommunications features, ISDN reference configurations, and basic user-network interface power conditions.

What does the SIST I-ETS 300 400 E1:2003 document contain?

The body of the document covers network access, telephony functions, message handling, keypad behavior, payment methods, and power-fail requirements. Annex A provides the test setup and measurement methods, including artificial ears, sound level meters, speech voltmeters, and test cases for returning coins and cards. Annex B describes optional facilities such as application recognition, authentication, CHV, charge card calling, cost calculation, language recognition, blacklist and whitelist checks, and voice encryption. Annex C gives the bibliography used by the standard.

SLOVENSKI STANDARD
01-december-2003
Digitalno omrežje z integriranimi storitvami (ISDN) – Telefonski terminali – Javne
govorilnice
Integrated Services Digital Network (ISDN); Telephony terminals; Payphones
Ta slovenski standard je istoveten z: I-ETS 300 400 Edition 1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERIM
EUROPEAN I-ETS 300 400
TELECOMMUNICATION March 1995
STANDARD
Source: ETSI TC-TE Reference: DI/TE-04115
ICS: 33.080
ISDN, telephony, payphone
Key words:
Integrated Services Digital Network (ISDN);
Telephony terminals;
Payphones
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

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I-ETS 300 400: January 1995
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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I-ETS 300 400: January 1995
Contents
Foreword .5
Introduction.5
1 Scope .6
2 Normative references.7
3 Definitions and abbreviations .8
3.1 Definitions .8
3.2 Abbreviations .8
4 Network access.8
4.1 General .8
4.2 Designation.9
4.3 Emergency calls.9
5 Telephony functions .9
5.1 General .9
5.2 Suppression of transmission.9
5.3 Inductive coupling .9
6 Message functions .9
6.1 General .9
6.2 Provision of messages.9
6.3 Message content.10
6.3.1 General.10
6.3.2 Language .10
6.4 Audio messages .10
6.4.1 Speech messages.10
6.4.2 Tones .10
7 Keypad functions.10
7.1 Network addressing .10
7.2 Interworking with payment card .10
8 Payment methods .11
8.1 General .11
8.2 Coins/Tokens.11
8.2.1 Repayment .11
8.2.2 Expiry of credit.11
8.3 Prepayment cards.11
8.3.1 Return of card.11
8.3.2 Expiry of credit.11
8.4 Credit and charge cards .11
8.4.1 Magnetic stripe card interface .11
8.4.2 Return of card.11
8.5 IC cards.12
8.5.1 General.12
8.5.2 Return of card.12
8.5.3 Electronic signals and transmission protocols .12
9 Power fail requirements.12
9.1 Emergency calls.12
9.1.1 Designated terminal .12
9.1.2 Other terminals.12

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I-ETS 300 400: January 1995
9.2 Payment retention . 12
Annex A (normative): Test specifications . 13
A.1 General conditions for testing. 13
A.1.1 Test environment . 13
A.1.2 Test equipment interface. 13
A.1.3 Test equipment requirements . 13
A.1.4 Alternative test methods. 13
A.1.5 Audio message level . 13
A.1.5.1 Speech messages . 13
A.1.5.2 Tones. 13
A.1.6 Return of coins or tokens . 13
A.1.7 Return of prepayment card . 14
A.1.8 Return of credit card. 14
A.1.9 Return of IC card. 14
Annex B (informative): Payphone facilities . 15
B.1 Application recognition. 15
B.2 Authentication . 15
B.3 Card Holder Verification. 15
B.4 Charge card calling. 15
B.5 Cost optimization . 15
B.6 Cost of service calculation. 16
B.7 Data transmission, card/host. 16
B.8 Dialling - fixed addresses. 16
B.9 Dialling - last number repeat. 16
B.10 Dialling - prefix conversion. 16
B.11 Dialling - short code. 16
B.12 Remote key pad. 17
B.12.1 Encrypting key pad. 17
B.12.2 PIN-pad identification . 17
B.13 Language recognition . 17
B.14 Unblocking key - terminal support . 17
B.15 Validity check - black list. 17
B.16 Validity check - white list. 17
B.17 Voice encryption . 17
Annex C (informative): Bibliography . 18
History. 19

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I-ETS 300 400: January 1995
Foreword
This Interim European Telecommunication Standard (I-ETS) was produced by the Terminal Equipment
Technical Committee (TC-TE) of the European Telecommunications Standards Institute (ETSI).
An ETSI standard may be given I-ETS status as it is regarded either as a provisional solution ahead of a
more advanced standard, or because it is immature and requires a "trial period". The life of an I-ETS is
limited, at first, to three years after which it can be converted into an European Telecommunication
Standard (ETS), have its life extended for a further two years, be replaced by a new version of the I-ETS
or be withdrawn.
This I-ETS describes the required technical characteristics of Integrated Services Digital Network (ISDN)
3,1 kHz payphone terminals as described in clause 1 (Scope).
Terminal equipment may be subject to mandatory standards such as NET 3 (CTR3 in preparation) and
CTR 8.
Proposed announcement date
Date of latest announcement of this I-ETS (doa): 30 June 1995
Introduction
A payphone service may be provided in a number of ways ranging from a simple self-contained terminal to
a complex arrangement of terminal and central processing equipment which interact with one another. A
number of methods of payment are possible, ranging from coins or tokens, through to various types of
prepayment cards, credit cards and "smart" cards.
In general, the complexity of the apparatus required is determined by the facilities offered, the reliability
required and the level of assurance that the service provider requires in the validation of the payment.
This I-ETS is intended to specify the requirements of that set of functions of a payphone terminal that are
necessary to support the range of facilities that may be required in such a variety of terminal apparatus.
Some types of payphones may be subject to National or European legislation requiring the mandatory
provision of certain facilities. Examples are the provision of inductive coupling or the provision of a printer.
This I-ETS does not specify requirements for operation in any particular environments.

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I-ETS 300 400: January 1995
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I-ETS 300 400: January 1995
1 Scope
This I-ETS specifies technical characteristics (electrical, mechanical, logical and acoustic) for a payphone
terminal using the 3,1 kHz telephony service which can be connected to an ISDN basic access at the
coincident S and T reference point at an interface to a public telecommunications network presented as
an ISDN basic access point.
The requirements of this I-ETS are additional to those of the standards for connection to the ISDN basic
access and of any other standards to which the terminal equipment is subject.
This I-ETS is applicable to terminal equipment of the functional group defined as Terminal Equipment
Type 1 (TE1) in CCITT Recommendation I.411 which supports the 3,1 kHz telephony teleservice.
This I-ETS specifies all the functions necessary to provide real-time two-way speech conversation. Where
a function is indicated as optional, it need not be provided, but where such a function is provided, the
terminal needs to conform to the requirements and tests specified in this I-ETS.
Annex B (informative) contains details of facilities that may be provided on a payphone, whilst the
provision of none of these facilities is mandatory, some levels of payphone service cannot be
implemented unless certain facilities are present.
2 Normative references
This I-ETS incorporates by dated or undated references, provisions from other publications. These
normative references are cited at the 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 I-ETS only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.
[1] I-ETS 300 245-1: "Integrated Services Digital Network (ISDN) - Technical
characteristics of telephony terminals - Part 1: General".
[2] I-ETS 300 245-2: "Integrated Services Digital Network (ISDN) - Technical
characteristics of telephony terminals - Part 2: PCM A-law handset telephony".
[3] ETS 300 381: "Telephony for hearing impaired people - Inductive coupling of
telephone earphones to hearing aids, performance requirements and testing
methods".
[4] EN 726-4: "Requirements for IC cards and terminals for telecommunication use
- Part 4: Application independent card related terminal requirements".
[5] ISO 4909 (1987): "Bank cards - Magnetic stripe data content for track 3".
[6] ISO 7810 (1985): "Identification cards - Physical characteristics".
[7] ISO 7811, Parts 1 to 5 (1985): "Identification cards - Recording technique".
[8] ISO 7813 (1990): "Identification cards - Financial transaction cards".
[9] prEN 1038: "IC card applications for telecommunications - Part 1 - IC Card
Payphone".
[10] ETS 300 153: "Integrated Services Digital Network (ISDN) - Attachment
requirements for terminal equipment to connect to an ISDN using ISDN basic
access (Candidate NET 3, Part 1)".
[11] ITU-T Recommendation P.57 (1993): "Artificial ears".
[12] IEC Publication 651: "Sound level meters".

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I-ETS 300 400: January 1995
[13] CCITT Recommendation P.56 (1988): "Objective measurement of active
speech level".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this I-ETS, the following definitions apply, together with the relevant definitions given
in I-ETS 300 245-1 [1], I-ETS 300 245-2 [2] and in CCITT Recommendations P.10 and G.701.
application: A set of security mechanisms, files, data, protocols (excluding transmission protocols) which
are located and used in the Integrated Circuit (IC) card (card application) and outside of the IC card
(external application).
cardphone: A payphone that accepts cards as a means of payment.
charge card: A form of credit card issued by a telecommunications service provider.
credit card: A card which permits payment to be made at a date after receiving a service.
designated terminal: A terminal that is permitted to draw power from power source 1 under restricted
power conditions as specified in CCITT Recommendation I.430.
follow-on call: A facility whereby a call may be cleared whilst retaining any payment as credit for a
following call.
Integrated Circuit Card (IC Card): A card containing a microprocessor, that can be considered as a set
of files that can, e.g. be read, written, or executed (sometimes known as a "smart" card).
payphone: Terminal apparatus permitting access to the telephony teleservice after the validation of
suitable payment. Outgoing calls to certain services may be permitted without payment. Calls to certain
services may be barred.
payphone service: A service offered by means of special equipment, which permits access to
telecommunications services after the validation of suitable payment. The service may be offered by a
self-contained terminal or by interaction between a terminal and other apparatus accessed over the
network.
prepayment card: A card providing payment for a service by means of a stored value paid for in advance.
3.2 Abbreviations
For the purposes of this I-ETS, the following abbreviations apply, together with relevant abbreviations
given in I-ETS 300 245-1 [1], I-ETS 300 245-2 [2] and CCITT Recommendations P.10 and G.701.
CHV Card Holder Verification
CTR Common Technical Regulation
IC Integrated Circuit
ISDN Integrated Services Digital Network
LRGP Loudness Rating Guard-ring Position
NET Norme Européene de Télécommunications
PCM Pulse Code Modulation
RLR Receive Loudness Rating
TE1 Terminal Equipment Type 1
TEUT Terminal Equipment Under Test
4 Network access
4.1 General
The terminal shall comply with I-ETS 300 245-1 [1].

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I-ETS 300 400: January 1995
4.2 Designation
A payphone shall be capable of being a designated terminal. As an option, a switching function may be
provided to remove the designation.
Compliance shall be checked by inspection.
4.3 Emergency calls
The terminal shall permit calls to th
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