SIST ETS 300 133-2 E1:2003

Paging Systems (PS); Enhanced Radio MEssage System (ERMES); Part 2: Service aspects

Services and Facilities of ERMES ERMES Receiver Features Quality of Service Charging Principles

Sistemi osebnega klica (PS) ¬– Evropski sistem za radijsko sporočanje (ERMES) – 2. del: Storitveni vidiki

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.20 - Paging systems
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 133-2 ed.1 (1992-07) - Paging Systems (PS); Enhanced Radio MEssage System (ERMES); Part 2: Service aspects

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2003
6LVWHPLRVHEQHJDNOLFD36¤±(YURSVNLVLVWHP]DUDGLMVNRVSRURþDQMH(50(6±
GHO6WRULWYHQLYLGLNL
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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 - [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 300 133-2: July 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 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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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ETS 300 133-2: July 1992
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 shall be offered by all network operators for the subscriber features provided.
An all feature reset facility should be provided.
- Normal procedures.
The service shall apply to all features accessible to the subscriber. Service to the fixed subscriber
can only be provided in the subscribed network. 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 if the service is offered by the transmitting network.
Interaction with other services
None.
5.3.1.2 Supplementary services related to the destination of the call
5.3.1.2.1 Roaming service
Definition
Roaming is the service which enables the mobile subscriber to choose, for a specific period, in which
country(ies) and geographical area(s), outside his service area, he wants his calls transmitted. The
subscriber can also roam within his home network. If the requested area is served by several operators
the choice of network is according to inter-operator agreements, influenced by tariffs, supplementary
services, etc. The mobile subscriber shall have the possibility to define the duration of roaming.
Procedures
- Provision.
This essential service shall be provided by all network operators.
- Normal procedures.
The service shall be made available to the mobile subscriber on demand. Roaming shall be
activated by the subscriber after authentication. Activation shall be for a specific period of time. It
can be de-activated either automatically by the PNC when activation time has expired or by the
subscriber (after authentication) before the activation time has expired. The service can be
activated/de-activated through the home PNC or a visited PNC. In the case that service area and
roaming area are adjacent or overlapping the calls shall be transmitted in both areas. According to

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ETS 300 133-2: July 1992
the network operator's policy the calls may also be transmitted to both areas even if they are not
adjacent. A test call may automatically be generated by the system immediately after the start time
of roaming, to confirm to the mobile subscriber that roaming has been activated successfully.
Network capabilities for charging
According to the policy of the network operator. Inter-operator charging for this feature shall be according
to inter-operator agreements.
Interworking requirements
See subclauses 5.3.1.1.1 and 5.3.1.1.2.
Interaction with other services
When the subscriber is roaming to another network it shall be impossible to use priority 1 service. Level 3
priority and urgent message indication can only be activated if the visited networks offer these services.
Activation of diversion of traffic or temporary barring shall suspend provision of the roaming service.
5.3.1.2.2 Diversion of traffic
Definition
The possibility of a mobile subscriber to have his calls diverted to another receiver registered in the same
network, or in another network within the ERMES system, or to another telecommunication system for a
period of time. Diversion can be made only to individual AdCs provided that the AdC is not already
diverted. If the divert recipient wishes to activate diversion for his own AdC, he shall be warned that
suspension of the already activated diversion of calls to his AdC shall occur. During this period the calls to
the originally diverted AdC shall be rejected (see ETS 300 133-3 [2], subclause 7.2).
Procedures
- Provision.
Provision of this service shall be optional for the network operators. Diversion outside home
network can only be provided if there is an agreement between the network operators and/or the
operators of other systems involved.
- Normal procedures.
The service should be made available to mobile subscribers on a registration basis or on demand,
according to the network operator's policy. Diversion shall be activated by the subscriber after
authentication. Activation shall be for a specific period of time. It can be de-activated either
automatically by the PNC when activation time has expired or by the subscriber (after
authentication) before the activation time expires.
Network capabilities for charging
According to the policy of the network operator.
In the case of diversion outside the home network, data regarding this feature shall be recorded in both
PNCs. Inter-operator charging for this feature shall be according to inter-operator agreements.
Interworking requirements
None.
Interaction with other services
A check shall be made to avoid diversion to AdCs having lower categories of subscriptions. Only those
supplementary services supported by the divert recipient's Home PNC (PNC-H) and the divert recipient's
receiver can be provided during the period of diversion. The mobile subscriber cannot activate any

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ETS 300 133-2: July 1992
supplementary service, except temporary barring, after activation of diversion of traffic. Request for
diversion to another AdC shall suspend the previous divert request. The supplementary services that the
mobile subscriber has already activated shall be suspended.
Activation for a group using common RIC will affect the whole group. In the case of Closed User Groups
(CUGs) it shall be possible to divert the call only within the CUG.
The diverted messages shall follow the message numbering of the divert recipient.
Calls shall be accepted and processed even if the divert recipient does not have all the supplementary
services of the subscriber who has activated the service. The calling party shall not be informed that these
supplementary services are not supported by the divert recipient.
5.3.1.2.3 Choice of destination
Definition
A service to give the calling party the possibility to choose the geographical areas that he wants the call to
be transmitted in. The calling party has the following alternatives:
- transmission according to the mobile subscriber location register;
- transmission in one or more areas in addition to the location register.
Procedures
- Provision.
Provision of this service shall be optional for the network operators. Subject to the policy of the
network operator, the service may have restrictions on the number of geographical areas.
- Normal procedures.
The service shall be provided to the calling party on a per call basis.
Network capabilities for charging
According to the policy of the network operator.
Interworking requirements
None.
Interaction with other services
When choice of destination is activated and transmission outside home network of the subscriber is
requested, level 1 priority cannot be used, level 3 priority and urgent message indication can only be
activated if they are provided in the requested geographical areas.
If the called mobile subscriber has activated diversion of calls this service cannot be activated.
5.3.1.3 Supplementary services related to protection against loss of messages
The method used by the system to indicate the loss of a message to the receiver or the mobile subscriber
is to allocate a number to each message before transmission. The system shall have one message
counter (1-31) per RIC. A message number (modulo 32) shall be allocated sequentially in increasing order
from 1 to 31 to all messages.
The message number shall be provided by all network operators.
The receiver shall have the capability to detect the message number and may take appropriate action
(according to receiver specification).

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ETS 300 133-2: July 1992
5.3.1.3.1 Repetition
Definition
The possibility of the calling party and/or the mobile subscriber to request automatic message repetition.
The message shall be repeated once after a 5 minute interval. The repeated messages shall have the
same message number (see message number control in the receivers).
Procedures
- Provision.
Provision of this service shall be optional for the network operators.
- Normal procedures.
The service should be available on a registration basis for the mobile subscribers and shall affect all
messages addressed to them. The calling parties can activate the service on a per call basis. Only
one repetition shall be activated if the service is requested from both mobile subscribers and calling
parties.
Network capabilities for charging
According to the policy of the network operator.
Interworking requirements
None.
Interaction with other services
None.
5.3.1.3.2 Message storing and retrieval
a) Message storing
Definition
Message storing enables the mobile subscriber to have all messages stored for a minimum of 24 hours,
after submission to the radio path. Together with the actual message, the message number and the date
and time of submission to the radio path, or to another PNC, shall be stored.
Procedures
- Provision.
Provision of this service shall be optional for the network operators.
- Normal procedures.
The service should be made available to the mobile subscriber on a registration basis if required.
Network capabilities for charging
The mobile subscriber should be charged according to the policy of the network operator.
Interworking requirements
None.
Interaction with other services

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ETS 300 133-2: July 1992
None.
b) Message retrieval and retransmission
Definition
The message retrieval service offers the mobile subscriber the possibility to retrieve a message. The
message shall be presented to the subscriber together with the message number and the stored
date/time. Network operators shall provide for one or more of the following ways to present the retrieved
message. The subscriber shall have the possibility to choose among the offered alternatives:
- retransmission via the radio path;
- displaying on a specified terminal.
The message retrieval procedure shall offer the possibility to retrieve several messages in one operation
(by identifying lowest and highest message number or last received message number), this operation can
be repeated several times.
Procedures
- Provision.
Provision of this service shall be optional for the network operators.
- Normal procedures.
The service shall be activated by the mobile subscriber after authentication.
Network capabilities for charging
According to the policy of the network operator.
Interworking requirements
None.
Interaction with other services
None.
5.3.1.3.3 Automatic retransmission of the last message number
Definition
This service offers the receiver the possibility to detect a loss of a message by comparing the received
last message number with the stored number of the last correctly received message. Retransmission of
the last message number is assumed to take place during low traffic time.
Procedures
- Provision.
Provision of this service shall be optional for the network operators.
- Normal procedures.
The service should be made available to the mobile subscriber on a registration basis if required.
Network capabilities for charging
According to the policy of the network operator.

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Interworking requirements
None.
Interaction with other services
The service cannot operate when one of the following supplementary services is activated:
- diversion of traffic;
- temporary barring of incoming traffic.
5.3.1.4 Bureau services
Definition
The service offered by a bureau which enables a request for a paging call or a subscriber feature initiated
via the telephone system to be input by an operator to the paging system. The bureau cannot provide
additional features, it can only enable those already subscribed.
Procedures
- Provision.
The service and terms of provision shall be optional for the network operators.
- Normal procedures.
This service should be available to all users.
Network capabilities for charging
According to the policy of the network operator.
Interworking requirements
None.
Interaction with other services
When a calling party uses bureau services it cannot access recipients within a CUG.
5.3.2 Supplementary services related to priority
The priority function enables certain messages to be sent before or after other messages in a queueing
situation. Three different levels of priority are described here.
5.3.2.1 Level 1 priority
Definition
Traffic having level 1 priority shall be sent on the radio path before traffic having lower priority. A level 1
priority message with a message length of less than 400 characters shall be sent within 1 minute after
page accepted acknowledgment is sent (see also subclause 7.2).
The service is intended mainly for short messages carrying alarm information or radiodistribution traffic
consisting, for example, of particularly urgent news. The concept of radiodistribution services is defined in
Annex C.
Traffic having level 1 priority in the home network shall receive level 2 priority when routed to a visited
network.
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ETS 300 133-2: July 1992
Procedures
- Provision.
The service and the terms of provision shall be optional for the network operators. Subject to the
policy of the network operator the use of the service may be linked to a restriction on the maximum
message length.
- Normal procedures.
Level 1 priority shall be made available in one or more of the following ways:
- to all calling parties, activated on a per call basis;
- on registration to fixed subscribers, activated on a per call basis;
- on registration to the mobile subscriber, affecting all messages;
- on registration to the mobile subscriber, activated on a per call basis by the calling party.
Legitimisation may be required for the calling party.
Network capabilities for charging
The service should be charged on a subscription basis, on a per call basis, and/or based on the amount of
traffic according to the policy of the network operator.
Interworking requirements
None.
Interaction with other services
Priority 1 cannot be activated when deferred delivery is activated. When roaming, choice of destination
and diversion of traffic are activated outside home network, priority 1 cannot be activated.
5.3.2.2 Level 2 priority
Definition
This service is intended for the standard calling party generated traffic of normal length and with moderate
requirements on the message throughput. This throughput shall not be greater than the message delivery
time of between 2,5 minutes and 10 minutes (see also subclause 7.2).
Traffic having level 2 priority shall be sent after sending traffic having level 1 priority and before sending
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