SIST ETS 300 133-2 E1:2003

SLOVENSKI STANDARD
SIST ETS 300 133-2 E1:2003
01-december-2003
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Paging Systems (PS); Enhanced Radio MEssage System (ERMES); Part 2: Service
aspects
Ta slovenski standard je istoveten z: ETS 300 133-2 Edition 1
ICS:
33.070.20 Sistem za osebni klic Paging systems
SIST ETS 300 133-2 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 133-2 E1:2003

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SIST ETS 300 133-2 E1:2003
EUROPEAN ETS 300 133-2
TELECOMMUNICATION July 1992
STANDARD
Source: ETSI TC-PS Reference: DE/PS-1001-2
ICS: 33.080
ERMES, paging systems, service aspects
Key words:
Paging Systems (PS);
European Radio Message System (ERMES);
Part 2 : Service aspects
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 1992. 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 Committee Support Dept." at the address shown on the title page.

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Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions.7
4 Abbreviations.7
5 Services and facilities.8
5.1 General .8
5.1.1 Introduction.8
5.1.3 Essential and optional services .8
5.2 Basic services.8
5.2.1 Tone-only paging.9
5.2.2 Numeric paging .9
5.2.3 Alphanumeric paging.10
5.2.4 Transparent data paging .11
5.3 Supplementary services.11
5.3.1 Call related supplementary services .12
5.3.1.1 Acknowledgements .12
5.3.1.1.1 Valid input acknowledgements .12
5.3.1.1.2 Subscriber feature acknowledgement .13
5.3.1.2 Supplementary services related to the destination of the
call .13
5.3.1.2.1 Roaming service.13
5.3.1.2.3 Choice of destination .15
5.3.1.3 Supplementary services related to protection against loss
of messages .15
5.3.1.3.1 Repetition.16
5.3.1.3.2 Message storing and retrieval.16
5.3.1.3.3 Automatic retransmission of the last message number .17
5.3.1.4 Bureau services.18
5.3.2 Supplementary services related to priority .18
5.3.2.1 Level 1 priority.18
5.3.2.2 Level 2 priority.19
5.3.2.3 Level 3 priority.20
5.3.3 Community of interest supplementary services .20
5.3.3.1 Closed User Group.20
5.3.3.2 Group calls.21
5.3.3.2.1 Group calls to mobile subscribers using common RIC.21
5.3.3.2.2 Group calls to mobile subscribers using individual RIC.22
5.3.3.3 Multi-address calls to mobile subscribers.23
5.3.3.4 Called group indication .24
5.3.3.5 Remote programming of RIC .24
5.3.4 Charging supplementary services.25
5.3.4.1 Standard charging .25
5.3.4.2 Reverse charging acceptance .26
5.3.4.3 Charging information for fixed subscribers.26
5.3.5 Supplementary services related to the restriction of calls .27
5.3.5.1 Temporary barring of incoming traffic.27
5.3.5.2 Restriction on all calls.27
5.3.6 Other supplementary services.28
5.3.6.1 Urgent message indication .28
5.3.6.2 Deferred delivery .29
5.3.6.3 Standard texts.29

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5.3.6.3.1 Standard texts defined by the network operator . 29
5.3.6.3.2 Standard texts defined by fixed subscribers . 30
5.4. Security aspects. 30
5.4.1 General . 30
5.4.2 Encryption of messages . 31
5.4.3 Legitimisation code. 31
5.4.4 Authentication . 32
5.4.4.1 Authentication by use of passwords. 32
5.4.4.2 Authentication by reverse calling . 33
5.4.4.3 Authentication by use of certificate . 33
5.5 Subscriber directory . 34
6 Receiver features. 34
6.1 Introduction. 34
6.2 Basic receiver features.35
6.2.1 Tone-only. 35
6.2.2 Numeric . 35
6.2.3 Alphanumeric. 35
6.2.4 Transparent data . 35
6.2.5 Alert signals . 35
6.2.6 Access to the message . 35
6.3 Supplementary receiver features . 35
6.3.1 Repeated call indication. 35
6.3.2 Indication of lost message/message number control . 35
6.3.3 Remote programming of RIC. 35
6.3.4 Out of range indication. 35
6.3.5 Urgent message indicator. 36
6.4 Additional receiver features. 36
6.4.1 Silent mode. 36
6.4.2 Low battery indication . 36
6.4.3 Message storage and retrieval . 36
6.4.4 Memory full . 36
6.4.5 Message manipulation. 36
6.4.6 Display . 36
6.4.7 Printer interface . 36
6.4.8 Data interface . 36
6.4.9 Date/time indication . 36
6.4.10 Encryption of messages . 37
7 Quality of service . 37
7.1 General. 37
7.2 Quality of service parameters . 37
7.2.1 System response delay. 37
7.2.2 Input blocking probability (input grade of service) . 37
7.2.3 Call accepted acknowledgment delay . 37
7.2.4 Page accepted acknowledgment delay . 37
7.2.5 Subscriber feature acknowledgement delay. 38
7.2.6 Message delivery time . 38
7.2.7 Call success rate . 38
7.2.8 False call rate . 39
7.2.9 Correct message transmitted probability . 39
Annex A (normative): Essential and optional supplementary services. 40
Annex B (normative): Character sets in the ERMES system . 42
B.1 Characters for numeric paging. 42
Annex C (normative): The concept of radiodistribution. 44
Annex D (normative): Essential and optional receiver features. 45
History. 46

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ETS 300 133-2: July 1992
Foreword
This European Telecommunication Standard (ETS) has been produced by the Paging Systems (PS)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS comprises seven parts with the generic title "Paging systems; European Radio Message System
(ERMES)". The title of each part is listed below:
- ETS 300 133-1: "Part 1: General aspects"
- ETS 300 133-2: "Part 2: Service aspects"
- ETS 300 133-3: "Part 3: Network aspects"
- ETS 300 133-4: "Part 4: Air interface specification"
- ETS 300 133-5: "Part 5: Receiver conformance specification"
- ETS 300 133-6: "Part 6: Base station specification"
- ETS 300 133-7: "Part 7: Operation and maintenance aspects"
This part, ETS 300 133-2, specifies the services and facilities of the European Radio Message System
(ERMES). This part also defines the quality of service aspects and describes the receiver features.

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1 Scope
This part of the seven part European Telecommunication Standard (ETS) 300 133, describes the service
aspects of the European Radio Message System (ERMES). In particular, a recommended set of basic
and supplementary services is defined and described. The features that should be considered for
implementation in the paging receivers are also described. Finally, the quality of service that shall be
offered to the users of the system is defined.
2 Normative references
This ETS 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 ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ETS 300 133-1 (1992): "Paging Systems (PS); European Radio Message
System (ERMES) Part 1: General aspects".
[2] ETS 300 133-3: (1992) "Paging Systems (PS); European Radio Message
System (ERMES) Part 3: Network aspects".
[3] ETS 300 133-5: (1992) "Paging Systems (PS); European Radio Message
System (ERMES) Part 5: Receiver conformance specification".
[4] ISO Standard 1073, parts 1 & 2: "Alphanumeric character sets for optical
recognition".
3 Definitions
For the purposes of this part of the standard the following definitions apply:
Essential service or facility: a service or facility which shall be implemented and provided in all operator
networks in the system.
Optional service or facility: an optional service or facility is provided at the discretion of the network
operators. If implemented it shall conform with this standard.
Essential receiver feature: a receiver feature that shall be implemented in all receivers (if it is relevant to
the paging category of a specific receiver).
Optional receiver feature: a receiver feature which may be implemented at the manufacturers'
discretion. If implemented it shall conform with this standard.
For the definitions of the other terms used in this standard see ETS 300 133-1 [1], Clause 3, "Vocabulary".
4 Abbreviations
BVR Basic Version Receiver
RIC Radio Identity Code
CUG Closed User Group
AdC Address Code
DTMF Dual Tone Multi-Frequency
EOM End of Message
GAdC Group Address Code
PNC Paging Network Controller
PNC-H Home PNC
PNC-I Input PNC
PNC-T Transmitting PNC
PSTN Public Switched Telephone Network

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5 Services and facilities
5.1 General
5.1.1 Introduction
In this Clause the set of basic and supplementary services that may be supported by an ERMES network
is defined and described. Some services are specified as essential to enable operation of an international
paging system. A number of optional services are also described, which operators may include in their
systems.
The security aspects of the system are also included in this Clause.
5.1.2 Framework for describing the services
The text associated with each service is structured in the following way:
Definition
This paragraph provides a general definition and description of the service as it is seen by the user.
Procedures
- Provision.
This paragraph indicates if the service should be essential or optional for the network operators of
the ERMES system.
- Normal procedures.
This paragraph gives an indication of who (calling party, fixed or mobile subscriber) is supposed to
activate the service and on what conditions it is made available to the users (e.g. per call basis or
by registration).
Network capabilities for charging
This paragraph gives an indication of what charging arrangements the system shall be able to support.
Interworking requirements
This paragraph describes the interworking requirements between the different ERMES networks in order
to implement a service.
Interaction with other services
This paragraph describes the interactions with other ERMES services when the service being described is
activated.
5.1.3 Essential and optional services
Each service shall be considered as essential or optional for the network operator. In Annex A, table A.1,
the essential and optional supplementary services and facilities for each paging category is given.
5.2 Basic services
The system shall offer mobile subscribers levels of basic paging services according to the receiver
capabilities. The system shall check that paging calls are not accepted to higher levels than the one
corresponding to the subscription. This check shall also take place on activation of a supplementary
service, e.g. diversion of traffic.

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The ERMES system provides two kinds of call in each basic service:
- individual calls that are initiated by using one Address Code (AdC) and are intended for only one
mobile subscriber;
- group calls that are initiated by using one Group Address Code (GAdC) and are intended for two or
more mobile subscribers.
5.2.1 Tone-only paging
Definition
Tone-only paging is the first basic service level and simplest kind of paging service, corresponding to the
traditional type of radio paging. The tone-only service means that paging signals to a particular receiver
shall cause the receiver to generate a simple alert signal. The system shall support up to 8 different alert
signals per Radio Identity Code (RIC). The system shall transmit the message within a message delivery
time depending on the level of priority (see subclause 7.2).
Procedures
- Provision.
This essential service shall be provided by all network operators. It shall be implemented in the
Paging Network Controller (PNC) and all types of receivers, except transparent data receivers. The
service may be implemented in the transparent data receiver.
- Normal procedures.
Tone-only paging can be activated by the calling party by any Public Switched Telephone Network
(PSTN) telephone on a per call basis to a mobile subscriber in the system. It may also be activated
by other terminal equipment.
Network capabilities for charging
The service should be charged on subscription and/or on a per call basis according to the network
operator's policy.
Interworking requirements
None.
Interaction with other services
A number of supplementary services cannot be activated when tone-only calls are sent (see Annex A,
table A.1).
5.2.2 Numeric paging
Definition
Numeric paging is the second service level. It allows transmission of up to at least 20 numeric or special
characters. This service is intended for mobile subscribers using pagers with the capability to receive,
store and display numeric information in addition to tone-only paging. The character set is included in
Annex B, table B.1. The system shall transmit the message within a message delivery time depending on
the level of priority (see subclause 7.2). The maximum message length that the ERMES system can
support is 16000 numeric characters. The network operators shall provide for a maximum message length
between 20 and 16000 numeric characters. Messages longer than the maximum message length that a
specific receiver can accept shall not be delivered. The calling party shall be informed that the message is
too long (see also subclause 5.2.4 for very long messages).

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Procedures
- Provision.
This essential service shall be provided by all network operators. It shall be implemented in the
PNC as well as in numeric and alphanumeric receivers. The service may be implemented in the
transparent data receiver.
- Normal procedures.
The service can be activated by the calling party on a per call basis to a mobile subscriber in the
system.
Network capabilities for charging
The service should be charged on subscription and/or on a per call basis according to the network
operator's policy.
Interworking requirements
None.
Interaction with other services
None.
5.2.3 Alphanumeric paging
Definition
Alphanumeric paging is the third service level. It allows transmission of text information with up to at least
400 characters. This service is for mobile subscribers using receivers with the capability to receive, store
and display alphanumeric information in addition to tone-only and numeric paging. The character set is
defined in Annex B, table B.2. The system shall transmit the message within a message delivery time
depending on the level of priority (see subclause 7.2). The maximum message length that the ERMES
system can support is 9000 alphanumeric characters. The network operators shall provide for a maximum
message length between 400 and 9000 alphanumeric characters. Messages longer than the maximum
message length that a specific receiver can accept, shall not be delivered. The calling party shall be
informed that the message is too long (see also subclause 5.2.4 for very long messages).
Procedures
- Provision.
This essential service shall be provided by all network operators. It shall be implemented in the
PNC and in alphanumeric receivers. The service may be implemented in the transparent data
receiver.
- Normal procedures.
The service can be activated by the calling party on a per call basis to a mobile subscriber in the
system.
Network capabilities for charging
The service should be charged on subscription and/or on a per call basis according to the network
operator's policy.
Interworking requirements
None.

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Interaction with other services
None.
5.2.4 Transparent data paging
Definition
Transparent data paging is a service allowing transmission of an arbitrary data stream to the receiver. The
system shall transmit the message within a message delivery time depending on the level of priority (see
subclause 7.2). The use of the data stream is determined by the application chosen by the subscriber.
Only the part of the radio channel dedicated to the message allows a full bit transparency. The maximum
message length that the ERMES system can support is 64 kbits. The network operators may provide for a
maximum message length of less than 64 kbits. Messages longer than the maximum message length that
a specific receiver can accept shall not be delivered. The calling party shall be informed that the message
is too long.
Very long messages (longer than the defined maximum) can be sent through the ERMES system only if
they are split into messages shorter than the maximum length. Users who wish to send such messages,
may define a method of linking the parts of the messages together, between calling party and receiver.
This method shall be transparent to the ERMES system, i.e. the parts shall be transmitted as separate
messages.
Procedures
- Provision.
Provision of this service shall be optional for the network operators. Restrictions on the message
length can be imposed by the network operator according to his policy. It shall be implemented in
the PNC as well as in the receiver. Lower categories may be implemented in the transparent data
receiver.
- Normal procedures.
The service can be activated by the calling party on a per call basis to a mobile subscriber in the
system.
Network capabilities for charging
The service should be charged on subscription and/or on a per call basis according to the network
operator's policy.
Interworking requirements
None.
Interaction with other services
The bureau service cannot be activated when the transparent data service is used.
5.3 Supplementary services
A supplementary service modifies or supplements a basic service. The offered supplementary services
may be used by the subscribers/users at their discretion.

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5.3.1 Call related supplementary services
5.3.1.1 Acknowledgements
5.3.1.1.1 Valid input acknowledgements
Definition
During the input of a call, acknowledgements shall be generated by the system to the calling party
indicating the call status. At least the following three types of acknowledgements shall be provided.
a) Call accepted acknowledgement.
The called AdC (individual or GAdC) is (is not) valid and the system is (is not) ready to accept the
call. The calling party is invited to enter data referring to additional information or the required
supplementary service(s) or to enter the message.
A call shall be treated as unconditionally accepted when the home operator is able to guarantee a
network status better than a threshold C in the areas in which the page is destined for transmission
(for the calculation of network status see ETS 300 133-3 [2]).
A call shall be treated as partially accepted when the network operator is only able to guarantee a
network status between a threshold UC and a threshold C in the areas in which the page is
destined for transmission.
The call shall be rejected when the network operator cannot guarantee a network status greater
than a threshold UC in the areas in which the page is destined for transmission.
Each network operator shall define its own thresholds C and UC, which can be identical if only two
call acceptance conditions are to be given to the calling party.
b) Supplementary service acknowledgement.
The supplementary service required is (is not) valid. The calling party is invited to enter data
referring to additional supplementary services or to enter the message.
c) Page accepted acknowledgement.
The message is (is not) valid. The call shall (shall not) be transmitted.
Procedures
- Provision.
This essential service shall be provided by all network operators.
- Normal procedures.
The service shall apply to all calls. Restrictions due to the access method used are described in
ETS 300 133-3 [2].
Network capabilities for charging
There shall be no charging for this service.
Interworking requirements
In the case of a roaming subscriber and/or if diversion of traffic outside home network is activated the
PNC shall be informed on the status of transmission networks involved.
Interaction with other services

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None.
5.3.1.1.2 Subscriber feature acknowledgement
Definition
The generation of an acknowledgement from the system to the fixed or mobile subscriber indicating
whether or not a feature, such as a supplementary service control operation, has been successfully
completed.
Procedures
- Provision.
This essential service sh
...