SIST TBR 014 E1:2004

SLOVENSKI STANDARD
SIST TBR 014 E1:2004
01-oktober-2004
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Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet
integrity (D64U); Attachment requirements for terminal equipment interface
Ta slovenski standard je istoveten z: TBR 014 Edition 1
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
SIST TBR 014 E1:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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TECHNICAL TBR 14
BASIS for April 1994
REGULATION
Source: ETSI TC-BTC Reference: DTBR/BTC-02038
ICS: 33.040.40
ONP, leased line
Key words:
Business TeleCommunications (BTC);
64 kbit/s digital unrestricted leased line with octet integrity
(D64U);
Attachment requirements for terminal equipment interface
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 - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
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 1994. All rights reserved.
New presentation - see History box

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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 Standards Approval Dept." at the address shown on the title page.

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Contents
Foreword.5
Introduction .5
1 Scope .7
2 Normative references .7
3 Definitions. 7
4 Symbols and abbreviations.8
5 Requirements.8
5.1 Physical characteristics .8
5.2 Electrical characteristics .9
5.2.1 Output port. 9
5.2.1.1 Signal coding.9
5.2.1.2 Waveform shape .9
5.2.1.3 Output jitter. 11
5.2.2 Input port. 13
5.3 Safety. 13
5.4 Overvoltage protection . 13
5.4.1 Impulse transfer from mains, common mode . 13
5.4.2 Impulse transfer from mains, transverse mode . 13
5.4.3 Conversion of common mode to transverse mode. 13
5.5 Electro-magnetic compatibility. 13
Annex A (normative): Test methods . 14
A.1 General . 14
A.1.1 Equipment connection. 14
A.1.2 Test environment. 14
A.2 Test methods. 15
A.2.1 Signal coding at output port. 15
A.2.2 Waveform shape at output port . 16
A.2.3 Output jitter . 17
Annex B (normative): Code conversion rules. 19
Annex C (informative): Bibliography. 20
History. 21

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Foreword
This Technical Basis for Regulation (TBR) has been produced by the Business TeleCommunications (BTC)
Technical Committee of the European Telecommunications Standards Institute (ETSI) and was adopted
after having passed through the ETSI standards approval procedure.
This TBR results from a mandate from the Commission of the European Community (CEC) to provide
harmonized standards for the support of the Terminal Equipment Directive (91/263/EEC).
This TBR is based on information from CCITT Recommendations and ETSI publications and the relevant
documents are quoted where appropriate.
Introduction
The Council Directive on the application of Open Network Provision (ONP) to leased lines (92/44/EEC)
concerns the harmonization of conditions for open and efficient access to, and use of, the leased lines
provided on public telecommunications networks, and the availability throughout the Community (EEC) of a
minimum set of leased lines with harmonized technical characteristics.
The consequence of the Directive is that Telecommunications Organizations within the EEC shall make
available a set of leased lines between points in these countries with specified connection characteristics
and specified interfaces.
Two classes of standard will be used for the interfaces of terminal equipment designed for connection to
the ONP leased lines. European Telecommunication Standards (ETSs), which are voluntary, give the full
technical specifications for these interfaces, whereas Technical Basis for Regulations (TBRs) give the
essential requirements under the Second Phase Directive (91/263/EEC) for attachment to the leased lines.
This TBR is a subset of the corresponding ETS 300 290 (1993).
CCITT Recommendation G.703 (1991), as qualified by ETS 300 166 (1993), is used as the basis for the
terminal interface.

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1 Scope
This TBR specifies the attachment requirements and corresponding test principles for a terminal equipment
interface for connection to the network termination points of ONP 64 kbit/s digital unrestricted leased lines
with octet integrity.
The term "attachment requirements" in the context of this TBR describes the essential requirements for
access which have to be fulfilled under the Second Phase Directive (91/263/EEC). Conformance to these
requirements does not guarantee end-to-end interoperability.
This TBR is applicable to interfaces designed for connection to the ONP 64 kbit/s unrestricted leased line
with octet integrity. It covers the physical and electrical characteristics of the terminal equipment interface.
Customer premises wiring and installation between the equipment and the Network Termination Point
(NTP) are outside the scope of this TBR.
2 Normative references
This TBR incorporates by dated or undated reference, 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 TBR
only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies.
[1] CCITT Recommendation G.703 (1991): "Physical/electrical characteristics of
hierarchical digital interfaces".
[2] CCITT Recommendation O.152 (1988): "Error performance measuring
equipment for 64 kbit/s paths".
[3] ETS 300 046-3 (1992): "Integrated Services Digital Network (ISDN); Primary
rate access - safety and protection, Part 3: Interface I - protection".
a
[4] ISO/IEC 10173 (1991): "Information technology - Integrated Services Digital
Network (ISDN) primary access connector at reference points S and T".
NOTE: This TBR also contains a number of informative references which have been included to
indicate the sources from which various material has been derived, hence they do not
have an associated normative reference number. Details of these publications are given
in Annex C. In some cases the same publication may have been referenced in both a
normative and an informative manner.
3 Definitions
For the purposes of this TBR, the following definitions apply:
Leased lines: the telecommunications facilities provided by a public telecommunications network that
provide defined transmission characteristics between network termination points and that do not include
switching functions that the user can control (e.g. on-demand switching).
Network Termination Point (NTP): all physical connections and their technical access specifications
which form part of the public telecommunications network and are necessary for access to and efficient
communication through that public network.
Safety Extra-Low Voltage (SELV) circuit: a secondary circuit which is so designed and protected that
under normal and single fault conditions, the voltage between any two accessible parts and, for class 1
equipment, between any accessible part and the equipment protective earthing terminal does not exceed a
safe value (subclause 1.2.8.5 of EN 60950).

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Terminal Equipment (TE): equipment intended to be connected to the public telecommunications network,
i.e.:
a) to be connected directly to the termination of a public telecommunication network; or
b) to interwork with a public telecommunications network being connected directly or indirectly to
the termination of a public telecommunications network,
in order to send, process, or receive information.
4 Symbols and abbreviations
For the purposes of this TBR, the following abbreviations apply:
ac alternating current
dc direct current
D64U 64 kbit/s digital unrestricted ONP leased line with octet integrity
EMC Electro-Magnetic Compatibility
NTP Network Termination Point
ONP Open Network Provision
11
PRBS(2 -1) Pseudo Random Bit Sequence (as defined in § 2.1 of CCITT Recommendation
O.152 [2])
RX Receive (a signal input at either the terminal equipment interface or the test
equipment)
SELV Safety Extra-Low Voltage
TE Terminal Equipment
TX Transmit (a signal output at either the terminal equipment interface or the test
equipment)
UI Unit Interval
5 Requirements
The terminal equipment interface is for use with 64 kbit/s unrestricted leased lines with octet integrity,
which provide bidirectional, point-to-point digital connections with a usable bit rate of 64 kbit/s where the
leased line output timing is provided from the network. The interface timing arrangements are codirectional.
5.1 Physical characteristics
Requirement: The terminal equipment shall provide an 8-contact plug of the type specified in
ISO/IEC 10173 [4] with contact assignments as specified in table 1. In addition, the terminal equipment
may provide an alternative method of connection.
NOTE 1: The use of a shielded cord or cable may be necessary to meet radiation and immunity
requirements defined in Electro-Magnetic Compatibility (EMC) standards. The common
reference point does not necessarily need to be earthed.
NOTE 2: The alternative connection method is primarily for the purpose of permitting hardwired
presentations of the leased line using insulation displacement terminals and wire with
solid conductors having diameters in the range from 0,4 mm to 0,6 mm.

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Table 1: Contact assignment
Contact Terminal interface
1 & 2 Receive pair
3 Shield reference point (if provided)
4 & 5 Transmit pair
6 Shield reference point (if provided)
7 Unused
8 Unused
NOTE 1: The transmit pair is the output from the terminal equipment interface. The receive pair is the
input to the terminal equipment interface, as shown in figure 1. Where the terms "output" and
"input" are used without qualification in this TBR, they refer to the terminal equipment
interface.
NOTE 2: For connection of the shield, or shields, to the common reference point at the NTP contacts 3
and 6 shall be used.
�˝˝˝˝˝˝˝˝˝˝˝˝» OUTPUT        INPUT �˝˝˝˝˝˝˝˝˝˝˝˝»
”     TX ˙˜˜˜˜˜˜˜˜˜˜˜˜˜>˜˜˜˜˜˜˜˜˜˜˜˜˜˜¶ RX     ”
” NETWORK  ˙˜˜˜˜˜˜˜˜˜˜˜˜˜>˜˜˜˜˜˜˜˜˜˜˜˜˜˜¶ TERMINAL ”
” INTERFACE ”              ” EQUIPMENT ”
”      ˙˜˜˜˜˜˜˜˜˜˜˜˜˜<˜˜˜˜˜˜˜˜˜˜˜˜˜˜¶      ”
”     RX ˙˜˜˜˜˜˜˜˜˜˜˜˜˜<˜˜˜˜˜˜˜˜˜˜˜˜˜˜¶ TX     ”
¨˝˝˝˝˝˝˝˝˝˝˝˝… INPUT        OUTPUT ¨˝˝˝˝˝˝˝˝˝˝˝˝…
Figure 1
Test: There shall be a visual inspection that the plug is of the correct type. The contact assignments are
tested indirectly through the tests in Annex A.
5.2 Electrical characteristics
5.2.1 Output port
5.2.1.1 Signal coding
Requirement: The signal transmitted at the output port shall comply with the encoding rules given in
Annex B.
Test: The test shall be conducted according to Annex A, subclause A.2.1.
5.2.1.2 Waveform shape
Requirement: The pulse at the output port shall comply with the requirements given in figure 2, figure 3
and table 2, based on CCITT Recommendation G.703 [1].

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Table 2: Waveform shape at output port
Pulse shape All pulses of a valid signal shall conform
(nominally rectangular) with the masks (see figures 2 and 3)
irrespective of the polarity
Test load impedance 120 Ω non-reactive
Nominal peak voltage V of a mark (pulse) 1 V
Peak voltage of a space (no pulse) 0 ± 0,1 V
Nominal pulse width 3,9 μs for a single pulse
7,8 μs for a double pulse
Ratio of the amplitudes of positive and negative 0,95 to 1,05
pulses at the centre of the pulse interval
Ratio of the widths of positive and negative 0,95 to 1,05
pulses at the nominal half amplitude
Figure 2: Pulse mask for single pulse

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Figure 3: Pulse mask for double pulse
Test: The test shall be according to Annex A, subclause A.2.2.
5.2.1.3 Output jitter
This requirement applies when the terminal equipment is producing the timing from an internal clock source
or when the terminal equipment is deriving the output timing from an external source (including derivation
from the input signal).
1)
Requirement : The peak-to-peak output jitter shall not exceed the limits of table 3 when measured with
first order linear filters with the defined cut-off frequencies. For the purpose of testing, any signal input
from which the output timing is derived shall be provided with the maximum tolerable input jitter and with
the maximum tolerable input frequency deviation specified by the manufacturer.

1)
This requirement differs from that in ETR 005 (1990) which defines maximum output jitter in terms of intrinsic jitter and a jitter
transfer characteristic. Intrinsic jitter is limited to 0,05 UI from 20 Hz to 20 kHz. The jitter transfer characteristic is limited to 0,5 dB
from 20 Hz to 3 kHz, decreasing to -16 dB at 20 kHz.

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Table 3: Maximum output jitter
Measur
...