SIST ETS 300 189 E1:2005

Private Telecommunication Network (PTN); Addressing

Reference document identifying usage & descriptions of address info used in private telecoms networks.

Zasebno telekomunikacijsko omrežje (PTN) – Naslavljanje

General Information

• Status: Published
• Publication Date: 30-Apr-2005
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-May-2005
• Due Date: 01-May-2005
• Completion Date: 01-May-2005
• Mandate: T-76A.1
• Ref Project: ETSI ETS 300 189 ed.1 (1992-12) - Private Telecommunication Network (PTN); Addressing

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 189 E1:2005
01-maj-2005
Zasebno telekomunikacijsko omrežje (PTN) – Naslavljanje
Private Telecommunication Network (PTN); Addressing
Ta slovenski standard je istoveten z: ETS 300 189 Edition 1
ICS:
33.040.35 Telefonska omrežja Telephone networks
SIST ETS 300 189 E1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 189 E1:2005

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SIST ETS 300 189 E1:2005
EUROPEAN ETS 300 189
TELECOMMUNICATION December 1992
STANDARD
Source: ETSI TC-ECMA Reference: ECMA-155
ICS: 33.080
PTN, PTNA, ECMA-155, addressing
Key words:
Private Telecommunication Network (PTN);
Addressing
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 1992. All rights reserved.
New presentation - see History box

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ETS 300 189: December 1992
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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ETS 300 189: December 1992
Contents
Foreword.5
1 Scope .7
2 Conformance .7
3 References.7
4 Definitions.7
4.1 Address .7
4.1.1 Number .8
4.1.1.1 PTN Number .8
4.1.1.2 Partial Number .8
4.1.2 Subaddress .8
4.2 Domain.8
4.2.1 Sub-Domain.8
4.3 Numbering Plan.8
4.3.1 Explicit Numbering Plan.8
4.3.2 Implicit Numbering Plan.8
4.3.3 Native Numbering Plan.8
4.3.4 Foreign Numbering Plan.8
4.3.5 Private Telecommunication Network Numbering Plans (PTN NP).8
4.3.5.1 ISDN Numbering Plan (ISDN NP) .8
4.3.5.2 Private Numbering Plan (PNP) .9
4.3.5.2.1 PNP Number.9
4.3.5.2.2 Region.9
4.3.5.2.3 Region Code (RC).9
4.3.5.2.4 Regional Number (RN).9
4.3.5.2.5 Complete Number (CN).9
4.3.5.3 Unknown Numbering Plan (Unknown NP) .9
4.3.6 Dialling Plan.9
4.4 Numbering Plan Identifier (NPI) .9
4.5. Type of Number (TON).9
4.6 Selection Address/Number.9
4.7 Identification Address/Number.9
4.8 Multiple Subscriber Number (MSN).10
4.9 External References.10
5 List of acronyms.10
6 PTN Addressable Entities .11
7 Requirements on numbering plans, and on their interrelationships.11
7.1 Content of PTN Numbers.11
7.2 Content of the Number Digits in a PTN Numbering Plan .13
7.2.1 ISDN NP.13
7.2.2 PNP .13
7.2.3 Unknown NP .13
7.3 Structure of Private Numbering Plans.13
7.4 Relationship between the Private and the ISDN Numbering Plan .14
7.5 Relationship between PNP Numbers in Different PTNs .15
7.6 Relationship with Numbering Plans other than the PTN NP or ISDN NP.15
7.6.1 Explicit Interworking.15
7.6.2 Implicit Interworking.15

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ETS 300 189: December 1992
8 Number Handling Requirements of Private Telecommunication Network Exchanges .16
8.1 PTNX Requirements for the Acceptance of Received Numbers.18
8.1.1 Numbering Formats Accepted with Selection Numbers .18
8.1.1.1 S Reference Point.18
8.1.1.2 Q Reference Point .18
8.1.1.3 T Reference Point.18
8.1.2 Numbering Formats Accepted with Identification Numbers .18
8.1.2.1 S Reference Point.18
8.1.2.2 Q Reference Point .19
8.1.2.3 T Reference Point.19
8.2 PTNX Requirements for the Provision of Numbers.19
8.2.1 Numbering Formats Provided with Selection Numbers .19
8.2.1.1 S Reference Point.20
8.2.1.2 Q Reference Point .20
8.2.1.3 T Reference Point.20
8.2.2 Numbering Formats Provided with Identification Numbers .20
8.2.2.1 S Reference Point.20
8.2.2.2 Q Reference Point .20
8.2.2.3 T Reference Point.21
9 Address handling Requirements of terminals attached to Private Telecommunication Network
Exchanges .21
9.1 Selection Number Handling.21
9.1.1 Outgoing Calls.21
9.1.2 Incoming Calls.22
9.2 Identification Number Handling.22
9.2.1 Sending of Identification Address.22
9.2.2 Reception of Identification Address.22
10 Subaddressing in PTNs.22
10.1 Treatment of Subaddresses in a Pure PTN Environment.23
10.2 Treatment of Subaddresses in Interworking Situations .23
10.3 Interworking with the Public ISDN.23
11 Selection address handling of terminals supporting subaddressing.23
Annex A (informative): Other References . 24
Annex B (informative): Use of Private and Public ISDN Numbering Plans within a PTN Numbering
Plan .25
Annex C (normative): MSN Arrangements.26
C.1 Introduction.26
C.2 Parameters of the MSN Arrangement .26
Annex D (informative): Terminal Interchangeability.27
Annex E (informative): Relationship between Dialling and Numbering Plans at the PTN User
Interface, and Numbering Plans at the PTN-to-Terminal Interface .28
History .29

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ETS 300 189: December 1992
Foreword
This European Telecommunication Standard (ETS) has been produced by the European Computer
Manufacturers Association (ECMA) on behalf of its members and those of the European
Telecommunications Standards Institute (ETSI).
This ETS is one of a series of ETSs which are applicable to private telecommunication networks. Its
purpose is to serve as a general and common reference for all addressing related statements in other
ETSs on private telecommunication networks.
This ETS is based on the ISDN concept as developed by CCITT and refined by ETSI for European
applications, but modified to cover the particularities of private telecommunication network. It is also in the
framework of standards for Open Systems Interconnection as defined by ISO 7498.
This ETS enables the Authority of a Private Telecommunication Network (PTN) to choose whether
- the ISDN Numbering Plan according to CCITT Recommendation E.164, or
- a Private Numbering Plan, or
- an Implicit Numbering Plan, or
- any combination of these numbering plans,
shall be employed as native numbering plan(s) in its PTN (PTN NP).
In addition, the Authority can employ PTN subaddressing in order to expand the addressing capacity
beyond the capacity of the PTN NP.
The impact of this on terminal interchangeability between accesses of public and private ISDNs is indicated
in annex D.
This ETS was produced by ECMA using the ECMA guidelines for the production of ETSs and using the
ECMA stylesheet. In order to avoid undue delays in the publication of this ETS it has been agreed that this
ETS will not be converted to the ETSI stylesheet.

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ETS 300 189: December 1992
1 Scope
This European Telecommunication Standard (ETS) defines the requirements for the handling of network
addresses for the identification of entities which use telecommunication services offered by Private
Telecommunication Networks (PTNs). The standard covers numbering, including the requirements for the
support of a Private Numbering Plan, and the support of subaddressing. The use of more than one PTN
numbering plan in a single PTN is excluded from the scope of this ETS. However, this ETS does not
exclude the possibility that physical equipment may be part of more than one PTN.
NOTE 1: The application of this standard to entities without fixed geographical locations is not
precluded, but is not explicitly provided for in this standard.
This ETS is applicable to Private Telecommunication Network Exchanges (PTNXs) and to terminals to be
attached to the access of PTNXs.
2 Conformance
In order to conform to this ETS, a PTNX shall meet the requirements of Clauses 6 to 8 and 10.
In order to conform to this ETS, a terminal for attachment to an access of a PTNX shall meet the
requirements of Clauses 9 and 11.
3 References
CCITT Recommendation E.160 Definitions relating to National and International Numbering Plans
(Blue Book, 1988).
CCITT Recommendation E.164 Numbering Plan for the ISDN Era (Blue Book, 1988)
CCITT Recommendation I.112 Vocabulary of terms for ISDNs.
CCITT Recommendation. I.334 Principles relating ISDN Numbers/Addresses to the OSI
Reference Model Network layer Addresses (Blue Book, 1988).
ENV 41004 (1992) Reference configurations for connectivity relations of Private
Telecommunication Network Exchanges.
ENV 41007-1 Definition of terms in private telecommunication networks, Part1:
Definition of general terms.
ETS 300 062 (1990) Integrated Services Digital Network (ISDN); Direct Dialling In
(DDI) supplementary service; Service description.
ETS 300 171 Private Telecommunication Network (PTN); Specification,
Functional model and information flows, Control aspects of circuit
mode basic services.
ISO 8348 AD2 Information processing systems - Data communications - Network
service definition. Addendum 2: Network layer addressing (1988).
4 Definitions
For the purpose of this standard, the following definitions apply.
4.1 Address
Formalized information used to indicate unambiguously an identifiable entity. Within the context of this
standard, identifiable entities are those which use telecommunication services.

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4.1.1 Number
An address restricted to containing numerical values, as defined by a numbering plan.
4.1.1.1 PTN Number
A number of the domain covered by a PTN Numbering Plan.
4.1.1.2 Partial Number
The subset of a number which is at least significant at a particular access of the network concerned for
distinguishing addressable entities beyond that access.
4.1.2 Subaddress
A part of an address beyond the addressing capability of a numbering plan.
4.2 Domain
The range of responsibility of an Authority for setting up numbering and/or addressing plans. The
boundaries of a domain need not coincide with the physical boundaries of a given network.
4.2.1 Sub-Domain
A part of a domain where the responsibility for administering numbering and/or addressing plans is
delegated to a subordinate authority.
4.3 Numbering Plan
4.3.1 Explicit Numbering Plan
A numbering plan in which each number is accompanied by an indication to which (sub)-domain it applies.
4.3.2 Implicit Numbering Plan
A numbering plan in which each number is not accompanied by an indication to which (sub)-domain it
applies. Instead the identification has to be determined from the number digits themselves.
NOTE 2: The relationship between a Dialling Plan and an Implicit Numbering Plan is explained in
annex E.
4.3.3 Native Numbering Plan
A numbering plan employed by a given domain in a way that it unambiguously identifies the addressable
entities of that domain.
4.3.4 Foreign Numbering Plan
A numbering plan not native to a given domain, however, supported by it in so far as that it is known to the
given domain.
4.3.5 Private Telecommunication Network Numbering Plans (PTN NP)
The generic designation for the numbering plan(s) chosen as native by a PTN Authority for its particular
PTN.
4.3.5.1 ISDN Numbering Plan (ISDN NP)
The numbering plan explicitly relating to the global ISDN domain, as defined in CCITT Recommendation
E.164.

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4.3.5.2 Private Numbering Plan (PNP)
The numbering plan explicitly relating to a particular private numbering domain, defined by the Authority of
that domain.
4.3.5.2.1 PNP Number
A number belonging to a PNP.
4.3.5.2.2 Region
The entire domain or a defined sub-domain of a PNP.
NOTE 3: A region does not necessarily correspond to a geographical area of a PTN.
4.3.5.2.3 Region Code (RC)
An RC comprises those leading digits of a PNP Number which identify a region.
NOTE 4: The RC may be omitted to yield a shortened form of a PNP Number for use internally
to that region.
4.3.5.2.4 Regional Number (RN)
A particular form of a PNP Number which is unambiguous in the region concerned.
4.3.5.2.5 Complete Number (CN)
A number which is unambiguous in the entire PTN, i.e. which corresponds to the highest level employed in
that PTN.
4.3.5.3 Unknown Numbering Plan (Unknown NP)
The numbering plan reflecting a dialling plan which is implicitly based on a particular private numbering
domain as defined by the Authority.
4.3.6 Dialling Plan
A plan according to which a user can identify addressable entities by means of numbers and, if applicable,
of prefixes indicating the (sub)-domain to which the addressable entity belongs.
4.4 Numbering Plan Identifier (NPI)
An indication of the numbering plan to which a number belongs; it is separate from the number itself.
4.5. Type of Number (TON)
An indication which distinguishes the various complete and shortened forms of number; it is separate from
the number itself.
4.6 Selection Address/Number
An address or a number used to select an addressable entity to which a call is to be established.
NOTE 5: This term also applies to addresses in general, i.e. also to subaddresses.
4.7 Identification Address/Number
An address or a number which is used for the identification of an entity.

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NOTE 6: This term also applies to addresses in general, i.e. also to subaddresses.
4.8 Multiple Subscriber Number (MSN)
A full or a partial number assigned to a user-to-network access for which an arrangement has been
established in the context of the MSN supplementary service ("MSN arrangement").
4.9 External References
This standard uses the following terms defined in other documents.
Escape Code CCITT Recommendation E.160
Prefix ENV 41007-1
Private ENV 41007-1
Private Telecommunication Network Exchange ENV 41007-1
Public ENV -141007
Public ISDN ENV 41007-1
Signalling CCITT Recommendation 1.112
Telecommunication Network ENV 41007-1
Terminal, Terminal Equipment ENV 41007-1
User ETS 300 171
5 List of acronyms
AFI Addressing plan and Format Identifier
CN Complete Number
DDI Direct Dialling In supplementary service
DSS1 Digital Subscriber Signalling system No. 1
ISDN Integrated Services Digital Network
MSN Multiple Subscriber Number supplementary service
NP Numbering Plan
NPI Numbering Plan Identifier
NSAP Network Layer Service Access Point
OSI Open Systems Interconnection
PNP Private Numbering Plan
PSTN Public Switched Telephony Network
PTN Private Telecommunication Network
PTNX Private Telecommunication Network Exchange
Q Q reference point
RC Regional Code
RN Regional Number
S S reference point
SA Subaddress
SPNP Support of Private Numbering Plans supplementary service
T T reference point
TON Type of Number
TOS Type of Subaddress

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6 PTN Addressable Entities
Depending on the numbering plan(s) employed, a PTN shall be able to assign an appropriate PTN number
to each of its addressable entities.
NOTE 7: An addressable entity can be associated with, but need not be limited to:
- a single access of the PTN;
- several accesses of the PTN (e.g. a line hunting group);
- an internal entity of the PTN (e.g. a service provider)
NOTE 8: A particular PTN number can fulfil only one of the functions.
A PTN may be able to assign more than one number to the same access of the PTN, in accordance with
the Multiple Subscriber Number supplementary service.
The PTN number of a PTN numbering domain shall not be required to identify a particular channel of an
interface comprising more than one channel. Indirect identification can, however, occur, e.g. when a PTN
number identifies one-to-one correspondence between the interface and a particular application with a
one-to-one correspondence to a particular channel.
7 Requirements on numbering plans, and on their interrelationships
Private telecommunication networks shall employ numbering plans, i.e. the addresses used within their
addressing domains shall be numbers.
Depending on the choice of the PTN Authority, the configuration management shall allow the employment
of the following numbering plans as native PTN numbering plans:
- the ISDN numbering plan according to CCITT Recommendation E.164, hereafter referred to as
"ISDN NP"; or
- a Private Numbering Plan, hereafter referred to as "PNP"; or
- an implicit Numbering Plan; or
- any combination of these numbering plans.
NOTE 9: For further information on the use of these numbering plans, see annex B.
For the purpose of this standard:
- the addressing domain of a PTN shall be assumed to be the whole PTN. If a PTN is divided into two
or more addressing domains, each with its own PTN NP, each addressing domain shall be
considered to be a separate PTN;
- communication between one addressing domain and another addressing domain shall be treated as
interworking between two PTNs;
- a single addressing domain spanning more than one PTN shall be considered as a single PTN.
7.1 Content of PTN Numbers
Number information can be presented in two formats, the explicit and the implicit format. In both formats
the number digits shall be accompanied by a Type Of Number (TON) value, in accordance with Table 1.

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Table 1: TON values for the E.164, PNP and Unknown NP indications
Explicit Format Implicit Format
NPI = E.164 NPI = PNP NPI = UNKNOWN
International Level 2 Regional
Number Number
National Level 1 Regional
Number Number
Subscriber Local
Number Number
Partial Partial
Number (Note 1) Number (Note 1)
Unknown  (Note 1) Unknown  (Note 1) Unknown  (Note 2)
PTN specific
Number (Note 3)
Abbreviated
Number (Note 3)
Notes to table 1:
Note 1: In the standards on the DSS1 of public and private ISDNs (ETS 300 102 and ETS 300
192), the TON values "Unknown" and "Partial Number" share the same codepoints.
Distinction is made by the direction of number information flow:
At the boundary between the public ISDN and a PTNX the meaning for Selection
Number is "Unknown" if the information flow is to the public ISDN, and the meaning is
"Partial" if the information flow is from the public ISDN (i.e. in the context of DDI). For
Identification Numbers the allocation of the meanings are reversed.
At the boundary between the private ISDN and its terminals the meaning for Selection
Number is "Partial" if the information flow is from the private ISDN to the terminal (i.e. in
the context of MSN), and the meaning is "Unknown" if the information flow is from the
terminal to the PTNX. For Identification Numbers the allocation of the meanings are
reversed.
Note 2: The number digits follow an implicit numbering plan and can include prefixes.
Note 3: The use of this type of number is under the control of the PTN authorities and beyond
the scope of this standard.
In the explicit format the numbering plan indicator (NPI) shall have a value other than "UNKNOWN". The
TON shall be set to either "UNKNOWN" or to any of the other values specified for the NPI concerned.
Except where the TON is set to "UNKNOWN", the number digits shall not include prefixes.
In the implicit format the NPI shall have the value "UNKNOWN". The TON shall only take the value
"UNKNOWN". If applicable, the number digits shall include prefixes, according to the implicit numbering
plan employed.

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7.2 Content of the Number Digits in a PTN Numbering Plan
7.2.1 ISDN NP
The content of digits of the ISDN NP is outside the scope of this standard. Information can be found in
CCITT Recommendation E.164.
7.2.2 PNP
A PNP Number shall comprise a sequence of x decimal digits (0,1,2,3,4,5,6,7,8,9) with the possibility that
different PNP Numbers within the same PNP can have different values of x. The maximum value of x shall
be the same as for the public ISDN numbering plan, see CCITT Recommendation E.164.
NOTE 10: Within this range, the maximum value of x in a particular PTN can be determined by the
PTN Authority.
NOTE 11: It is the PTN Authority's responsibility to choose the appropriate numbering capabilities
of the PTNXs and terminals for that PTN.
With the value of TON = UNKNOWN any prefixes are additional to the value of x.
NOTE 12: The definition of prefixes (e.g. decimal digits and/or special or alpha characters like #,
A, B, C.) is under the responsibility of the PTN Authority and is outside the scope of
this standard.
The minimum capabilities of a PTNX shall be such that for a level 0 regional number a value of 4 can be
supported for x.
NOTE 13: Within this range, the actual value of x for a particular level 0 regional number (local
number) can be determined by the PTN Authority.
7.2.3 Unknown NP
For a number of an Unknown NP the same value x for the number of digits shall apply as specified for the
PNP, see 7.2.2. Any prefixes shall be additional to the value of x.
NOTE 14: The definition of prefixes (e.g. decimal digits and/or special or alpha characters like #,
A, B, C.) is under the responsibility of the PTN Authority and is outside the scope of
this standard.
7.3 Structure of Private Numbering Plans
A PNP can be hierarchically organized by means of regions. Shortened forms of PNP Numbers can then be
used in certain parts of a PTN.
NOTE 15: A region will typically comprise one or more PTNXs; but in principle there is nothing to
prevent a numbering boundary from occurring inside a PTNX.
Different levels of region are made possible by employing the regioning principle in a recursive manner.
Therefore, within a region of level n, one or more regions of level n-1 may exist. The highest level of a
region is the entire PNP. A PNP Number which has significance within a level n region shall be called a level
n regional number. The lowest level of a region shall be called level 0. The maximum level number in a PTN
shall be two.
NOTE 16: In a PNP without hierarchical structure, the level of the only region is 0.
The TON indicator shall indicate the level of region to which a PNP Number belongs. Where the TON
indicator has the value "UNKNOWN", the level to which a PNP Number belongs shall be clear from the
digits of the number, e.g. by the use of prefixes or implied by the leading digits.

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A level 0 Regional Number (RN) shall be called a local number (LN). An RN for the highest level which
exists within a PNP shall be called a Complete Number (CN).
A level n RN with n greater than 0 shall comprise a level n-1 RN and a level n-1 region code (RC)
identifying the level n-1 region to which the level n-1 RN belongs. The level n-1 RC shall occupy the leading
digits of the level n RN, and the level n-1 RN shall occupy the trailing digits. This is illustrated in figure 1.
    First Digit                   Final Digit
     �˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜´˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜¿
     ‡  Level n-1    ‡       Leve
...