ETSI ETS 300 012-5 ed.2 (1998-10)

SLOVENSKI STANDARD
01-december-2003
Digitalno omrežje z integriranimi storitvami (ISDN) – Osnovni vmesnik uporabnik-
omrežje (UNI) – 5. del: Specifikacija za preskušanje skladnosti za vmesnik IB
Integrated Services Digital Network (ISDN); Basic User-Network Interface (UNI); Part 5:
Conformance test specification for interface IB
Ta slovenski standard je istoveten z: ETS 300 012-5 Edition 2
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.

EUROPEAN ETS 300 012-5
TELECOMMUNICATION October 1998
STANDARD Second Edition
Source: TM Reference: RE/TM-03038-5
ICS: 33.020
Key words: Basic, ISDN, layer 1, testing, transmission, UNI
Integrated Services Digital Network (ISDN);
Basic User Network Interface (UNI);
Part 5: Conformance test specification for interface I
B
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Internet: secretariat@etsi.fr - http://www.etsi.fr - http://www.etsi.org
Tel.: +33 4 92 94 42 00 - Fax: +33 4 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 1998. All rights reserved.

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ETS 300 012-5: October 1998
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 Standards Making Support Dept." at the address shown on the title page.

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ETS 300 012-5: October 1998
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions, symbols and abbreviations.8
3.1 Definitions .8
3.2 Symbols .9
3.3 Abbreviations .9
4 Allocation of tests .10
4.1 Scope.10
4.2 References .10
4.3 Definitions, symbols and abbreviations.10
4.4 Primitives associated with layer 1 .11
4.5 Wiring configurations and location of interface points .11
4.6 Functional characteristics .11
4.7 Interface procedures.12
4.8 Electrical characteristics .13
4.9 Power feeding.14
4.10 Interface connector contact assignment.15
4.11 Annexes.15
5 Functional characteristic tests.16
5.1 Binary organization of frame.16
5.1.1 Test A.16
5.1.2 Test B.17
6 Interface procedure tests .18
6.1 D-channel interframe (layer 2) time fill.18
6.2 D-echo channel response.18
6.3 Activation/deactivation .19
6.3.1 Activation/deactivation procedure .19
6.3.2 Activation/deactivation time.20
6.3.2.1 NT activation time.20
6.3.2.1.1 Test A in state G1 .21
6.3.2.1.2 Test B in state G2 .21
6.3.2.2 Deactivation time .22
6.3.2.3 Value of the timer T2 .22
6.4 Frame alignment procedures.23
7 Electrical characteristics tests .23
7.1 Bit rate.24
7.1.1 Bit rate when transmitting an INFO 2 .24
7.1.2 Bit rate when transmitting an INFO 4 .24
7.2 NT jitter characteristics .25
7.3 NT transmitter output impedance .25
7.3.1 Test A.25
7.3.2 Test B.26
7.4 Pulse shape and amplitude.27
7.5 Pulse unbalance .28
7.5.1 Pulse amplitude.28
7.5.2 Pulse unbalance of an isolated couple of pulses .28
7.6 Longitudinal conversion loss of transmitter output.29
7.7 Receiver input characteristics.29
7.7.1 NT receiver input impedance .29

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ETS 300 012-5: October 1998
7.7.1.1 Test A. 30
7.7.1.2 Test B. 30
7.7.2 Receiver sensitivity - noise and distortion immunity . 31
7.7.3 NT receiver input delay characteristics. 32
7.7.4 Unbalance about earth of the receiver input. 32
8 Power feeding. 33
8.1 Power source 1 . 33
8.1.1 Normal power condition. 33
8.1.2 Restricted power provision . 34
8.1.3 Power source switch-over time. 35
8.1.4 Power source 1 restricted mode under overload conditions. 36
8.1.4.1 Test A. 36
8.1.4.2 Test B. 36
8.1.4.3 Test C . 37
8.1.4.4 Test D . 38
8.1.5 Requirements for type "a" sources . 38
8.1.6 Switch on surge capability . 39
8.1.7 TE connection surge capability. 40
8.1.8 dc unbalance of power source 1. 41
8.1.9 Current unbalance in a pair . 43
8.2 Minimum voltage of power source 2 . 44
9 Auxiliary power supply . 44
9.1 Additional requirements from an APS. 44
9.1.1 APS switch-on time. 45
9.1.2 APS switch-off time. 46
9.1.3 APS requirements for type "a" sources . 47
9.1.4 APS switch-on surge capability. 48
9.1.5 APS TE connection surge capability. 49
9.1.6 APS current unbalance in a pair . 50
9.2 Additional requirements for NT compatible with APS . 50
9.2.1 Power source 1 mode back-off. 51
9.2.2 Power source 1 restricted mode power-up. 52
9.2.3 Power consumption from APS normal mode . 53
Annex A (normative): Connection cords and general testing requirements . 54
A.1 Connection cords. 54
A.2 General testing requirements . 54
History. 56

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ETS 300 012-5: October 1998
Foreword
This second edition European Telecommunication Standard (ETS) has been produced by the ETSI
Technical Committee Transmission and Multiplexing (TM).
This ETS concerns the basic User Network Interface (UNI) for the Integrated Services Digital Network
(ISDN) and consists of 7 parts as follows:
Part 1: "Layer 1 specification";
Part 2: "Implementation Conformance Statement (ICS) and Implementation eXtra Information for
Testing (IXIT) specification for interface I ";
A
Part 3: "Implementation Conformance Statement (ICS) and Implementation eXtra Information for
Testing (IXIT) specification for interface I ";
B
Part 4: "Conformance test specification for interface I ";
A
Part 5: "Conformance test specification for interface I ";
B
Part 6: "Abstract Test Suite (ATS) specification for interface I ";
A
Part 7: "Abstract Test Suite (ATS) specification for interface I ";
B
and is based on ITU-T Recommendation I.430 [1].
Transposition dates
Date of adoption of this ETS: 18 September 1998
Date of latest announcement of this ETS (doa): 31 January 1999
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 July 1999
Date of withdrawal of any conflicting National Standard (dow): 31 July 1999

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ETS 300 012-5: October 1998
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ETS 300 012-5: October 1998
1 Scope
This part 5 of ETS 300 012 provides the test principles for the requirements of this ETS used to determine
the compliance of an Implementation Under Test (IUT) to this ETS.
It is outside the scope of this ETS to identify the specific tests required by an implementation where
equipment has to meet attachment approval.
Detailed test equipment accuracy and the specification tolerance of the test devices is not a subject of this
ETS. Where such details are provided then those test details are to be considered as being an
"informative" addition to the test description.
Unless otherwise stated, conformance tests described in this ETS do not apply to the Auxiliary Power
Supply (APS).
Ideal values for components and circuits are considered in the test principles.
2 Normative references
This ETS incorporates by dated and 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 ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ITU-T Recommendation I.430 (1995): "Basic user-network interface; Layer 1
specification".
[2] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces; reference
configurations".
[3] ETS 300 047-3 (1992): "Integrated Services Digital Network (ISDN); Basic
access - safety and protection; Part 3: Interface I - protection".
A
[4] EN 60603-7 (1993): "Connectors for frequencies below 3 MHz for use with
printed boards - Part 7: Detail specification for connectors, 8-way, including fixed
and free connectors with common mating features; (IEC 603-7:1990) (S)".
[5] EN 28877 (1993): "Information technology; Telecommunications and information
exchange between systems; Interface connector and contact assignments for
ISDN Basic Access Interface located at reference point S and T;
(ISO/IEC 8877: 1992)".
[6] CCITT Recommendation G.117 (1988): "Transmission aspects of unbalance
about earth (definitions and methods)".
[7] ETS 300 102-1 (1990): "Integrated Services Digital Network (ISDN);
User-network interface layer 3; Specifications for basic call control".
[8] ETS 300 012-1 (1998): "Integrated Services Digital Network (ISDN); Basic User
Network Interface (UNI); Part 1: Layer 1 specification".
[9] ITU-T Recommendation X.200 (1994): "Information technology; Open Systems
Interconnection; Basic reference model: The basic model".
[10] ITU-T Recommendation Q.512 (1995): "Digital exchange interfaces for
subscriber access".
[11] CCITT Recommendation G.812 (1988): "Timing requirements at the outputs of
slave clocks suitable for plesiochronous operation of international digital links".

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ETS 300 012-5: October 1998
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of this ETS the following definitions, together with those given in annex E of
ITU-T Recommendation I.430 [1] and in ITU-T Recommendation I.411 [2] apply.
basic access: A user-network access arrangement that corresponds to the interface structure composed
of two B-channels and one D-channel. The bit rate of the D-channel for this type of access is 16 kbit/s.
B-channel: This function provides for the bi-directional transmission of independent B-channel signals
each having a bit rate of 64 kbit/s.
bearer service: A type of telecommunication service that provides the capability for the transmission of
signals between UNI.
NOTE 1: The ISDN connection type used to support a bearer service may be identical to that
used to support other types of telecommunication service.
connection management entity: An entity for the purpose of management of resources that have an
impact on an individual data link connection.
D-channel: This function provides for bi-directional transmission of one D-channel signal at a bit rate of
16 kbit/s.
designated terminal: A terminal which is permitted to draw power from power source 1 under both
normal and restricted power conditions.
frame alignment: This function provides information to enable the TE or NT to recover the time-division
multiplexed channels.
Integrated Services Digital Network (ISDN): A network that provides or supports a range of different
telecommunications services and provides digital connections between UNIs.
interface I : User side of the ISDN UNI for the basic access.
A
interface I : Network side of the ISDN UNI for the basic access.
B
IUT (Implementation Under Test): Interface point I i.e. NT2 or access connection element (see also
B
ITU-T Recommendation I.430 [1], annex E, clause E.1 definition 109).
Network Termination (NT): An equipment providing interface I .
B
NOTE 2: This term is used in this ETS to indicate network-terminating aspects of NT1, NT2 and
PS1 functional groups where these have an I interface.
B
Network Termination Type 1 (NT1): This functional group includes functions broadly equivalent to
layer 1 (physical) of the Open Systems Interconnection (OSI) reference model. These functions are
associated with the proper physical and electromagnetic termination of the network. NT1 functions are:
- line transmission termination;
- layer 1 maintenance functions and performance monitoring;
- timing;
- power transfer;
- layer 1 multiplexing;
- interface termination, including multidrop termination;
- employing layer 1 contention resolution.

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ETS 300 012-5: October 1998
Network Termination Type 2 (NT2): This functional group includes functions broadly equivalent to
layer 1 and higher layers of the ITU-T Recommendation X.200 [9] reference model. Private Automatic
Branch Exchanges (PABXs), Local Area Networks (LANs), and terminal controllers are examples of
equipment or combinations of equipment that provide NT2 functions. NT2 functions include:
- layer 2 and 3 protocol handling;
- layer 2 and 3 multiplexing;
- switching;
- concentration;
- maintenance functions;
- interface termination and other layer 1 functions.
non-designated terminal: A terminal which is only permitted to draw power from power source 1 under
normal power conditions.
normal power condition: The condition indicated by the normal polarity of the phantom voltage at the
access leads, i.e. where the voltage of the transmit leads c and d on the TE is positive with respect to the
voltage on the receive leads e and f.
Power Source 1 (PS1): Power source for the provision of remote power feeding of TE via a phantom
circuit of the interface wires.
Rx (Receiver): Interface signal receiver of IUT or simulator.
restricted power condition: The condition indicated by the reversed polarity of the phantom voltage at
the access leads, i.e. where the voltage of the receive leads e and f on the TE is positive with respect to
the voltage on the transmit leads c and d.
simulator: Device generating the stimulus signal for the IUT and monitoring the signal transmitted by the
IUT to test the characteristics of NT.
Terminal Adapter (TA): An equipment with interface I and one or more auxiliary interfaces that allow
A
non-ISDN terminals to be served by an ISDN UNI (see also ITU-T Recommendation I.411 [2]).
Terminal Equipment (TE): An equipment with interface I and consisting of one or more functional
A
blocks.
NOTE 3: This term is used in this ETS to indicate terminal-terminating aspects of TE1, TA and
NT2 functional groups, where these have an I interface.
A
Terminal Equipment Type 1 (TE1): This functional group includes functions belonging to the functional
group TE, and with an interface that complies with the ISDN UNI recommendation.
Tx (Transmitter): Interface signal transmitter of IUT or simulator.
3.2 Symbols
For the purposes of this ETS, the following symbols apply:
ONE Binary "1"
ZERO Binary "0"
3.3 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
APS Auxiliary Power Supply
dc direct current
ETS European Telecommunication Standard
I Informative
I Interface point A
A
I Interface point B
B
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ETS 300 012-5: October 1998
ICS Implementation Conformance Statement
ISDN Integrated Services Digital Network
IUT Implementation Under Test
IXIT Implementation eXtra Information for Testing
LCL Longitudinal Conversion Loss
N Normative
N/R Not Relevant
NT Network Termination
ppm parts per million
PS1 Power Source 1
Rx Receive
Tx Transmit
UI Unit Interval (Layer 1)
4 Allocation of tests
4.1 Scope
Scope Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Scope 1 N/R
4.2 References
Scope Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
References 2 N/R
4.3 Definitions, symbols and abbreviations
Definitions, symbols and abbreviations Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Definitions, symbols and abbreviations 3 N/R
Definitions 3.1 N/R
General definitions 3.1.1 N/R
Interface 3.1.1.1 N/R
NT 3.1.1.2 N/R
TE 3.1.1.3 N/R
Definition of services 3.1.2 N/R
Services required from the physical medium 3.1.2.1 N/R
Services provided to layer 2 3.1.2.2 N/R
Transmission capability 3.1.2.2.1 N/R
Activation/deactivation 3.1.2.2.2 N/R
D-channel access 3.1.2.2.3 N/R
Maintenance 3.1.2.2.4 N/R
Status indication 3.1.2.2.5 N/R
Primitives between layer 1 and other entities 3.1.3 N/R
Modes of operation 3.1.4 N/R
Point-to-point operation 3.1.4.1 N/R
Point-to-multipoint operation 3.1.4.2 N/R
Definitions of states 3.1.5 N/R

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ETS 300 012-5: October 1998
TE states 3.1.5.1 N/R
State F1 (inactive) 3.1.5.1 N/R
State F2 (sensing) 3.1.5.1 N/R
State F3 (deactivated) 3.1.5.1 N/R
State F4 (awaiting signal) 3.1.5.1 N/R
State F5 (identifying input) 3.1.5.1 N/R
State F6 (synchronized) 3.1.5.1 N/R
State F7 (activated) 3.1.5.1 N/R
State F8 (lost framing) 3.1.5.1 N/R
NT states 3.1.5.2 N/R
State G1 (deactive) 3.1.5.2 6.3.1
State G2 (pending activation) 3.1.5.2 6.3.1
State G3 (active) 3.1.5.2 6.3.1
State G4 (pending deactivation) 3.1.5.2 6.3.1
Symbols 3.2 N/R
Abbreviations 3.3 N/R
4.4 Primitives associated with layer 1
Primitives associated with layer 1 Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Primitives associated with layer 1 4 N/R
4.5 Wiring configurations and location of interface points
Modes Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Wiring configurations and location of interface points 5 N/R
General 5.1 N/R
Point-to-point configuration 5.1.1 N/R
Point-to-multipoint configuration 5.1.2 N/R
Location of the interfaces 5.1.3 N/R
Support of wiring configurations 5.2 N/R
Wiring polarity integrity 5.2.1 6.3.2.1.1
NT and TE associated wiring 5.2.2 N/R
4.6 Functional characteristics
Functions Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Functional characteristics 6 N/R
Interface functions 6.1 N/R
B-channel 6.1.1 5.1
Bit timing 6.1.2 5.1.1
Octet timing 6.1.3 5.1.1
Frame alignment 6.1.4 6.4
D-channel 6.1.5 5.1.1
D-channel access procedure 6.1.6 6.2
Power feeding 6.1.7 8
Deactivation 6.1.8 6.3.3
Activation 6.1.9 6.3.3
Interchange circuits 6.2 5.2.1

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ETS 300 012-5: October 1998
Connected/disconnected indication 6.3 N/R
TEs powered across the interface 6.3.1 N/R
TEs not powered across the interface 6.3.2 N/R
Indication of connection status 6.3.3 N/R
Line code 6.4 5.1.1
Frame structure 6.5 5.1
Bit rate 6.5.1 5.1.1
Binary organization of the frame 6.5.2 N/R
TE to NT 6.5.2.1 N/R
NT to TE 6.5.2.2 5.1
Timing considerations 6.6 5.1.1
4.7 Interface procedures
D-channel access Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Interface procedures 7 N/R
D-channel access procedure 7.1 N/R
Interframe (layer 2) time fill 7.1.1 6.1
D-echo channel 7.1.2 6.2
D-channel monitoring 7.1.3 N/R
Priority mechanism 7.1.4 N/R
Collision detection 7.1.5 N/R
Activation/deactivation Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Activation/deactivation 7.2 N/R
Activate primitives 7.2.1 6.3
Deactivate primitives 7.2.2 6.3
Management primitives 7.2.3 6.3
Valid primitive sequences 7.2.4 N/R
Signals 7.3 5.1.1, 5.1.2
Activation/deactivation procedure for TEs 7.4 6.3.1
General TE procedures 7.4.1 N/R
Specification of the procedures 7.4.2 N/R
Activation/deactivation for NTs 7.5 6.3
Non-activating/non-deactivating NTs 7.5.1 6.3
Timer values 7.6 6.3.2.3
Activation times 7.7 N/R
TE activation times 7.7.1 N/R
NT activation times 7.7.2 6.3.2.1, 6.3.2.2
Deactivation times 7.8 6.3.2.2
Frame alignment Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Frame alignment procedures 8 6.4
Frame alignment procedure in the direction NT to TE 8.1 N/R
Loss of frame alignment 8.1.1 N/R
Frame alignment 8.1.2 N/R
Frame alignment in the direction TE to NT 8.2 6.4
Loss of frame alignment 8.2.1 6.4
Frame alignment 8.2.2 6.4
Multi-framing 8.3 N/R
Idle channel code on the B-channels 8.4 N/R

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ETS 300 012-5: October 1998
4.8 Electrical characteristics
Functions Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Electrical characteristics 9 N/R
Bit rate 9.1 7.1
Nominal rate 9.1.1 7.1.1, 7.1.2
Tolerance 9.1.2 7.1.1, 7.1.2
Jitter and bit-phase relationship between TE input and output 9.2 N/R
Test configurations 9.2.1 N/R
Timing extraction jitter 9.2.2 N/R
Total phase deviation input to output 9.2.3 N/R
NT jitter characteristics 9.3 7.2
Termination of the line 9.4 N/R
Transmitter output characteristics 9.5 N/R
Transmitter output impedance 9.5.1 N/R
NT transmitter output impedance 9.5.1.1 7.3
TE transmitter output impedance 9.5.1.2 N/R
Test load impedance 9.5.2 N/R
Pulse shape and amplitude (binary ZERO) 9.5.3 7.4
Pulse shape 9.5.3.1 7.4
Nominal pulse amplitude 9.5.3.2 7.4
Pulse unbalance 9.5.4 N/R
Pulse amplitude when transmitting a high density pattern 9.5.4.1 7.5.1
Pulse unbalance of an isolated couple of pulses 9.5.4.2 7.5.2
Voltage on other test loads (TE only) 9.5.5 N/R
400 W load 9.5.5.1 N/R
9.5.5.2 N/R
5,6 W load
Unbalance about earth 9.5.6 7.6
Longitudinal conversion loss 9.5.6.1 7.6
Output signal balance 9.5.6.2 N/R
Receiver input characteristics 9.6 N/R
Receiver input impedance 9.6.1 N/R
TE receiver input impedance 9.6.1.1 N/R
NT receiver input impedance 9.6.1.2 7.7.1
Receiver sensitivity - Noise and distortion immunity 9.6.2 7.7.2
TEs 9.6.2.1 N/R
NTs for short passive bus (fixed timing) 9.6.2.2 7.7.2
NTs for both point-to-point and short passive bus 9.6.2.3 7.7.2
configurations (adaptive timing)
NTs for extended passive bus wiring configurations 9.6.2.4 7.7.2
NTs for point-to-point configurations only 9.6.2.5 7.7.2
NT receiver input delay characteristics 9.6.3 7.7.3
NT for short passive bus 9.6.3.1 7.7.3
NT for both point-to-point and passive bus 9.6.3.2 7.7.3
NT for extended passive bus 9.6.3.3 7.7.3
NT for point-to-point only 9.6.3.4 7.7.3
Unbalance about earth 9.6.4 7.7.4
Isolation from external voltages 9.7 N/R
Interconnecting media characteristics 9.8 N/R
Standard ISDN basis access TE cord 9.9 N/R

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ETS 300 012-5: October 1998
4.9 Power feeding
Static requirements Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Power feeding 10 N/R
Reference configuration 10.1 N/R
Functions specified at the access leads 10.1.1 5.1.1, 8.1.1, 8.1.2
Provision of power sources and sinks 10.1.2 8.1.2
Power available from NT 10.2 8.1.4.1
Power source 1 normal and restricted mode 10.2.1 8.1.1, 8.1.2, 8.1.3
Minimum voltage at NT from power source 1 10.2.2 N/R
Normal power conditions 10.2.2.1 8.1.1
Restricted power conditions 10.2.2.2 8.1.2
Minimum voltage of power source 2 10.2.3 8.2
Power available at a TE 10.3 N/R
Power source 1 - phantom mode 10.3.1 N/R
Normal power 1 - phantom mode 10.3.1.1 N/R
Restricted power conditions 10.3.1.2 N/R
Power source 2 - optional third pair 10.3.2 N/R
Normal power conditions 10.3.2.1 N/R
Restricted power conditions 10.3.2.2 N/R
Power source 1 consumption 10.4 N/R
Normal power conditions 10.4.1 N/R
Restricted power conditions 10.4.2 N/R
Power available to a TE "designated" for restricted power 10.4.2.1 N/R
operation
Power available to "non-designated" TEs 10.4.2.2 N/R
Galvanic isolation 10.5 N/R
Dynamic requirements Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Current transient 10.6 N/R
Current/time limitations for TEs 10.6.1 N/R
TE design to minimize power disturbance 10.6.2 N/R
Optimized current/time mask 10.5.2.1 N/R
Alternative current/time mask for optimized TEs 10.6.2.2 N/R
Power source switch-over 10.6.3 N/R
Power source switch-over time 10.6.3.1 8.1.3
Restricted mode power source requirements under overload 10.5.3.2 8.1.4
conditions
Other TE requirements 10.6.4 N/R
Minimum TE start-up current 10.6.4.1 N/R
Protection against short term interruptions 10.6.4.2 N/R
Behaviour at switch-over 10.6.4.3 N/R
Other power source requirements 10.6.5 N/R
Power source 1 restricted 10.6.5.1 8.1.4.2, 8.1.4.3, 8.1.4.4
Power source 1 normal 10.6.5.2 N/R
Requirements for type (a) source 10.6.5.3 8.1.5, 9.1.3
Requirements for both types of sources 10.6.5.4 N/R
Switch-on surge capability 10.6.5.4.1 8.1.6, 9.1.4
TE connection surge capability 10.6.5.4.2 8.1.7, 9.1.5
Current unbalance 10.7 N/R
Direct current unbalance 10.7.1 N/R
dc unbalance of power source 1 10.7.1.1 8.1.8
dc unbalance of power sink 1 10.7.1.2 N/R
Differential resistance in a pair of the installation wiring 10.7.1.3 N/R
Current unbalance in a pair 10.7.2 8.1.9, 9.1.6

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ETS 300 012-5: October 1998
Requirements for an APS Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Additional requirements for an APS 10.8 8.1.1, 8.1.2, 8.1.3,
8.1.4.1, 9.1
Power available from an APS 10.8.1 8.1.4.1
APS switch-on time 10.8.2 9.1.1
APS switch-off time 10.8.3 9.1.2
APS power consumption when off 10.8.4 N/R
Dynamic behaviour of an APS 10.8.5 N/R
Additional requirements for NT1 restricted mode source for 10.9 9.2
compatibility with an APS
Power source 1 restricted mode back-off 10.9.1 9.2.1
Power source 1 restricted mode power up 10.9.2 9.2.2
NT1 power consumption from APS normal mode 10.9.3 9.2.3
4.10 Interface connector contact assignment
Requirements Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Interface connector contact assignments 11 5.1.1, 8.1.1, 8.1.2
4.11 Annexes
Requirements Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
Wiring configurations and round trip delay considerations used Annex A N/R
as a basis for electrical characteristics
Introduction A.1 N/R
Wiring configurations A.2 N/R
Point-to-multipoint A.2.1 N/R
Short passive bus A.2.1.1 N/R
Extended passive bus A.2.1.2 N/R
Point-to-point A.2.2 N/R
Test configurations Annex B N/R
Test loopbacks defined for the basic UNI Annex C N/R
Introduction C.1 N/R
Loopback mechanism definitions C.2 N/R
Test loopback reference configuration C.3 N/R
Test loopback characteristics C.4 N/R
Additional requirements applicable to the (explicite) S Annex D N/R
reference point
Introduction D.1 N/R
References D.2 N/R
Definitions D.3 N/R
Private network termination D.3.1 N/R
Terminal equipment D.3.2 N/R
Conformance D.4 N/R
Requirements D.5 N/R
Provision of power D.6 N/R
(continued)
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ETS 300 012-5: October 1998
Requirements Clause / Test defined in
subclause in clause / subclause
ETS 300 012-1 [8]
this ETS
SDL representation of activation/deactivation procedures for Annex F N/R
TEs and NTs
SDL representation of activation/deactivation procedures for F.1 N/R
TEs which can detect power source 1 or power source 2
SDL representation of activation/deactivation procedures for F.2 N/R
NTs
Multi-framing mechanism Annex G N/R
Multi-framing G.1 N/R
General mechanism G.1.1 N/R
Q-bit position identification algorithm G.1.2 N/R
TE multiframe identification G.1.3 N/R
S-channel structuring algorithm G.2 N/R
5 Functional characteristic tests
5.1 Binary organization of frame
5.1.1 Test A
Reference: ETS 300 012-1 [8], subclause 6.5.2.2.
Purpose: To check the binary organization of INFO 4 frames.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
Figure 1: Test configuration
System state: Active (state G3), with pseudo-random pattern (word length ‡ 2-1) in both
B-channels and idle channel code or messages in the D-channel.
Stimulus: INFO 3 type frames from the TE simulator.
Monitor: The frame structure from the NT (positive pulses, negative pulses and bit and
frame timing are available).
Results: See table 1.
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ETS 300 012-5: October 1998
Table 1: Results of test
BIT POSITION DESCRIPTION POLARITY
1 F-bit positive pulse
2 L-bit negative pulse
3 to 10 B1 octet first ZERO coded negative, the following bits may be
positive, negative or no pulse
11 E-bit logically equal to bit 47 of the previous frame in the TE
to NT direction
12 D-bit positive, negative or no pulse
13 A-bit no pulse
14 F negative, positive or in case of multi-framing NT2 no
A
pulse
15 N-bit opposite binary value of F pulse
A
16 to 23 B2 octet positive, negative or no pulse
24 E-bit logically equal to bit 12 of the frame in the TE to NT
direction
25 D-bit positive, negative or no pulse
26 M-bit multi-framing bit; negative, positive or in case of
multi-framing NT2, no pulse
27 to 34 B1 octet positive, negative or no pulse
35 E-bit logically equal to bit 25 of the frame in the TE to NT
direction
36 D-bit positive, negative or no pulse
37 S-bit positive or negative pulse
38 to 45 B2 octet positive, negative or no pulse
46 E-bit logically equal to bit 36 of the frame in the TE to NT
direction
47 D-bit positive, negative or no pulse
48 L-bit positive or no pulse
NOTE 1: L = balance bit which is used to ensure even parity of pulses in one frame.
NOTE 2: See figure 3, subclause 6.4.2 of ETS 300 012-1 [8] for details of pulse polarity.
NOTE 3: Multi-framing procedure is not covered by this test.
5.1.2 Test B
Reference: ETS 300 012-1 [8], subclause 7.3.
Purpose: To check the binary organization of INFO 2 frames.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
Figure 2: Test configuration
System state: Pending activation (state G2).
Stimulus: Activation request from the TE (INFO 1).
Monitor: Line signals.
Results: Check that the B, D and D-echo channels, bits A, M and S are set to binary
ZERO. Bits N and L are set according to the normal coding rules (N and L set to
binary ONE).
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ETS 300 012-5: October 1998
6 Interface procedure tests
These tests are designed to test conformance to the specification of the interface procedures described in
ETS 300 012-1 [8], clause 7. The tests are performed by stimulating and monitoring the interface I of an
B
IUT from the bus at the T reference point and by activation requests from the network or the terminal.
6.1 D-channel interframe (layer 2) time fill
Reference: ETS 300 012-1 [8], subclause 7.1.1.
Purpose: To check the D-channel contains the correct interframe time fill from the NT.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
Figure 3: Test configuration
System state: Active (state G3)
Stimulus: INFO 3 from the TE simulator with binary ONE in the D-channel.
Monitor: D-channel.
Results: Binary ONEs or repetitions of "01111110".
6.2 D-echo channel response
Reference: ETS 300 012-1 [8], subclause 7.1.2.
Purpose: To check that the NT, on receipt of a D-channel bit from the TE simulator,
reflects the binary value in the next available D-echo channel bit position
towards the TE.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
Figure 4: Test configuration
System state: Active (state G3).
Stimulus: INFO 3 from the TE simulator with binary ONEs and binary ZEROs in the
D-channel.
Monitor: Receive D-channel from the TE and transmit D-echo channel by the NT.
Results: When the TE simulator sends a D-bit binary ZERO, the returned binary value in
the next available D-echo channel bit position towards the TE shall be ZERO.
When the TE simulator sends a D-bit binary ONE, the returned binary value in
the next available D-echo channel bit position towards the TE shall be binary
ONE.
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ETS 300 012-5: October 1998
6.3 Activation/deactivation
Reference: ETS 300 012-1 [8], subclause 7.2
6.3.1 Activation/deactivation procedure
Reference: ETS 300 012-1 [8], subclause 7.2.
Purpose: To check the NT correctly executes the activation/deactivation procedure.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
Figure 5: Test configuration
System state: Any state.
Stimulus: Line signals INFOs 0, 1 and 3 applied from the TE simulator and activation
request (PH-AR) applied from the network.
Monitor: Transmitted line signals, INFOs 0, 2 and 4.
Results: New state, transmitted signal (as described in table 2), and primitives sent to the
higher layers according to tables 5, 6 or 7 in ETS 300 012-1 [8].

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ETS 300 012-5: October 1998
Table 2: Stimuli and resulting state changes
STATE CURRENT STIMULUS NOTE NEXT INFO COMMENT
NO STATE STATE SENT
1 G1 PH-AR 5 G2 INFO 2 Initiate activation and timer T1
2 G1 T1 expires G1 INFO 0 No action
3 G1 T2 expires G1 INFO 0 No action
4 G1 Rx INFO 0 4 G1 INFO 0 No action
5 G1 Rx INFO 1 5 G2 INFO 2 Activation by the TE and timer T1
6 G2 MPH-DR 2 G4 INFO 0 Initiate deactivation and timer T2
7 G2 T1 expires 2, 5 G4 INFO 0 Initiate deactivation and timer T2
8 G2 T2 expires G2 INFO 2 No action
9 G2 Rx INFO 0 4 G2 INFO 2 No action
10 G2 Rx INFO 1 G2 INFO 2 No action
11 G2 Rx INFO 3 3 G3 INFO 4 Activate and stop timer T1
12 G3 MPH-DR 2 G4 INFO 0 Initiate deactivation and timer T2
13 G3 T2 expires G3 INFO 4 No action
14 G3 Rx INFO 0 1, 4 G2 INFO 2 Pending deactivation
15 G3 Rx INFO 3 G3 INFO 4 No action
16 G3 Lost framing G2 INFO 2 Loss of framing signalling
17 G4 PH-AR 5 G2 INFO 2 Initiate activation and timer T1
18 G4 T1 expires G4 INFO 0 No action
19 G4 T2 expires 2 G1 INFO 0 Deactivated
20 G4 Rx INFO 0 4 G1 INFO 0 Deactivated
21 G4 Rx INFO 1 G4 INFO 0 No action
22 G4 Rx INFO 3 G4 INFO 0 No action
23 G4 Lost framing G4 INFO 0 No action
NOTE 1: For testing purposes INFO 0 is simulated by a sinusoidal signal having a voltage of 100 mV
peak-to-peak (with a frequency in the range of 2 kHz to 1 MHz.
The NT shall react by transmitting INFO 2 within a period time 250 μs to 25 ms.
NOTE 2: In case the value of timer T2 is 0, a direct transition from state G2 or G3 to G1 is possible
(note 2 in table 8, subclause 7.7.2 of ETS 300 012-1 [8]).
NOTE 3: A minimum period of 100 ms can elapse before the sending of INFO 4 or sending the
primitives PH-AI and MPH-AI (note 2 in table 8, subclause 7.7.2 of ETS 300 012-1 [8]).
NOTE 4: INFO 4 shall be detected when 48 or more contiguous ONEs have been received.
NOTE 5: Timer T1 is a supervisory timer which has to take the overall time to activate into account.
This time includes the time it takes to activate both the ET - NT and the NT - TE sections of
the customer access. ET is the exchange termination.
6.3.2 Activation/deactivation time
Reference: ETS 300 012-1 [8], subclause 7.2.
6.3.2.1 NT activation time
Reference: ETS 300 012-1 [8], subclause 7.7.2.

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ETS 300 012-5: October 1998
6.3.2.1.1 Test A in state G1
Reference: ETS 300 012-1 [8], subclause 7.7.2.
Purpose: To check the value of the NT activation time.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
NOTE 1: If the item under test is not a NT2, the test configuration shall also include the subscriber line,
the access network and the exchange termination.
Figure 6: Test configuration
System state: Deactive state (state G13).
Stimulus: INFO 1from the TE simulator continuously.
Monitor: The line signals with a digital storing oscilloscope, measuring the elapsed time
between start of reception of INFO 1 and transmission of INFO 2.
Results: INFO 2 should be started within 1 s upon the receipt of the first INFO 1.
NOTE 2: Delays "Da" as long as 30 s are acceptable under abnormal conditions (no fault).
6.3.2.1.2 Test B in state G2
Reference: ETS 300 012-1 [8], subclauses 7.7.2 and 5.2.1.
Purpose: To check the value of the NT activation time.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
NOTE 1: If the item under test is not a NT2, the test configuration shall also include the subscriber line,
the access network and the exchange termination.
Figure 7: Test configuration
System state: Pending activation (state G2).
Stimulus: INFO 3 from the TE simulator.
This test shall be performed with both normal and reversed polarity of the
interchange circuit (TE to NT direction).
Monitor: The line signals with a digital storage oscilloscope, measuring the elapsed time
between start of receipt of INFO 3 and transmission of INFO 4.
Results: INFO 4 should be started within 500 ms upon the receipt of INFO 3.

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ETS 300 012-5: October 1998
NOTE 2: Delays "Db" as long as 15 s are acceptable under abnormal conditions (no fault). The
sum of delays "Da" and "Db" shall be £ 30 s (see note 2 of subclause 6.3.2.1.1).
6.3.2.2 Deactivation time
Reference: ETS 300 012-1 [8], subclause 7.8.
Purpose: To check that the NT responds to the receipt of INFO 0 by initiating the
transmission of INFO 2 within a period of 250 μs to 25 ms.
Rx
Tx
TE
SIMULATO R
AND
IU T
TEST
APPARATUS
Rx Tx
NOT
...