SIST-TP ETSI/TR 101 895 V1.1.1:2005

• Abstract:

  This technical report is an overall description of the service from a user's point of view. It also deals with the mailbox provider's perspectives in a context of amultiple mailbox providers. The service is network independant and applies to various notifications of events (e.g. Voicemail, email, etc.). Reference document: ETS 300 650.

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 33.040.35 - Telephone networks
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Ref Project: ETSI TR 101 895 V1.1.1 (2001-01) - Services and Protocols for Advanced Networks (SPAN); Message Waiting Indication (MWI) ; Service Aspects

SIST-TP ETSI/TR 101 895 V1.1.1:2005 is the Slovenian version of ETSI TR 101 895 V1.1.1, a technical report on the Message Waiting Indication (MWI) supplementary service. It describes stage 1 service aspects for PSTN and ISDN subscriber lines from the receiving user's point of view, and also covers the mailbox provider's role where more than one mailbox provider may be involved. The report is network independent and can also be applied to notifications of other events, such as voice mail or email.

What does SIST-TP ETSI/TR 101 895 V1.1.1:2005 specify?

SIST-TP ETSI/TR 101 895 V1.1.1:2005 specifies the overall service description of MWI at stage 1. In practice, that means it explains how the service behaves for users and providers, while staying away from the underlying signalling, switching, or terminal interface details.

The document is organized into clauses on scope, references, definitions and abbreviations, description, procedures, interworking requirements, and interactions with other supplementary services. It also includes four informative annexes that give interaction tables, detailed interaction notes, examples, and a bibliography.

Annex	What it covers
Annex A	Interaction tables between MWI and other supplementary services
Annex B	Detailed interaction cases for named services
Annex C	Example of how MWI is used
Annex D	Bibliography

The scope also places clear limits on what is outside the report's focus. It stays at stage 1, so it does not cover the human-machine interface on terminals, the detailed procedures used by the controlling user to activate or deactivate MWI, or the underlying network technology used to provide the service.

What are the key requirements of SIST-TP ETSI/TR 101 895 V1.1.1:2005?

SIST-TP ETSI/TR 101 895 V1.1.1:2005 defines how a receiving user is notified that messages are waiting, and how that notification is set up, changed, or cleared. The most important points are the service model, the notification modes, the provisioning rules, and the interaction behavior with other supplementary services.

Service model and notification behavior

The MWI supplementary service informs a receiving user that one or more messages are waiting in a message system. The controlling user, typically a mailbox-related entity, invokes the service, and the receiving user gets the indication.

The report allows immediate notification, deferred notification, or both. Immediate notification is meant to appear as soon as the service is invoked, while deferred notification appears when the receiving user later makes an outgoing call attempt. For a reader, this means the service must be planned around when the user should be alerted and what the terminal should show or play.

Provisioning and withdrawal

The service can be provided after prior arrangement with the service provider, or as a network option it can be generally available. It can also be withdrawn at the receiving user's request or for administrative reasons.

Provisioning can be done on an access basis or a number basis. The report also allows the receiving user to register which controlling user numbers may activate or deactivate the service, and the maximum number of such numbers is left to network operator choice. In practice, this affects how mailbox services are authorized and how finely the service is controlled.

Activation, deactivation, and service information

A controlling user can activate or deactivate MWI for a specific receiving user, and several controlling users may act for the same receiving user at the same time. The network may pass information transparently to the receiving user, such as a name, date and time stamp, originating identity, mailbox identification, message count, or local reference.

Depending on service options, activation can produce an immediate indication, a deferred indication, or a combined result. Deactivation can also produce an immediate deactivation indication or cancel deferred notification. For operators, this means the service has to preserve the right instance of MWI and make the change visible in a way that matches the subscribed option.

Exceptional handling

If the network cannot carry out an activation or deactivation request, it must reject the request explicitly and give a reason to both parties. The report names several rejection cases, including lack of subscription, an invalid receiving user number, a conflicting supplementary service, lack of authorization for the indicated receiving user, delivery failure, and limits on controlling users or active instances.

This matters operationally because provisioning errors and service conflicts need to be traceable, not silent. A service desk or implementation team can use these cases to check whether the failure is due to subscription, numbering, authorization, or capacity.

Interworking and interactions with other services

Public and private networks are expected to cooperate in providing MWI, and interworking between public and private ISDN follows ETS 300 345. The detailed interactions are then handled in clause 7 and the annexes.

A few interaction points are especially important in practice:

• For PSTN access, if the receiving user line is busy, immediate notification is not delivered at that moment and the network retries later.
• MWI must not trigger Call Waiting.
• With Call Forwarding Busy or Call Forwarding no reply, deferred notification is not diverted.
• With Call Forwarding Unconditional, the MWI follows the forwarding behavior requested by that service.
• With Completion of Calls to Busy Subscriber and Completion of calls on no reply, the recall behavior takes priority over MWI.
• Incoming Call Barring takes precedence over MWI.

These points matter because MWI behaves like a supplementary indication, not like a normal call. The service therefore has to avoid creating unintended ringing, diversion, or priority conflicts.

What terms does SIST-TP ETSI/TR 101 895 V1.1.1:2005 define?

• Message Waiting Indication (MWI) - The supplementary service that tells a receiving user that one or more messages are waiting in a message system.
• Controlling user (CU) - The user or system that activates, deactivates, and invokes MWI, typically the mailbox side.
• Receiving user (RU) - The user who receives the indication that messages are waiting.
• Mailbox provider - The provider of the message system that offers mailbox service to the receiving user.
• Mailbox service - The service that lets messages be recorded, stored, interrogated, and deleted in a message system.
• Immediate notification - A notification sent as soon as MWI is invoked, meant to stay visible or otherwise persist for the user.
• Deferred notification - A notification delivered when the receiving user later makes an outgoing call attempt.
• Voice Mail Server - The provider's voice messaging system used to supply voice mail service.

Who uses SIST-TP ETSI/TR 101 895 V1.1.1:2005?

SIST-TP ETSI/TR 101 895 V1.1.1:2005 is used by telecommunications service designers, network operators, and mailbox or voice mail providers who need to define how message alerts work for PSTN and ISDN users. It is also relevant to equipment and service integration teams that have to decide how MWI should appear at the terminal and how it should interact with other supplementary services.

Quality managers and buyers can use it to check whether a proposed service or platform supports the intended notification behavior, provisioning model, and interworking cases. Because the report also allows other event notifications, it is useful beyond voice mail in any service where a network indication has to tell a user that something is waiting.

What changed in SIST-TP ETSI/TR 101 895 V1.1.1:2005 from the previous edition?

SIST-TP ETSI/TR 101 895 V1.1.1:2005 takes account of ETS 300 650 and gives a wider description of the MWI service. The scope notes that ETS 300 650 is limited to ISDN situations, includes both receiving and controlling user viewpoints, and is a restricted view of the commercial facilities that may be offered. Where the two documents conflict, ETS 300 650 takes precedence.

Which standards are used with SIST-TP ETSI/TR 101 895 V1.1.1:2005?

The report cites several companion references that give the service framework and vocabulary:

• ITU-T I.130 - The method used to characterize telecommunication services in the ISDN stage model.
• ETSI ETS 300 650 - The ISDN MWI service description that this report takes into account.
• ETSI ETS 300 345 - The interworking framework for public and private ISDNs.
• ITU-T I.112 - Vocabulary for ISDN terms.
• ITU-T Q.9 - Vocabulary for switching and signalling terms.
• ITU-T I.210 - Principles and description methods for ISDN services.

These references matter because they anchor the report's terminology and service staging, and they define how interworking and service characterization are supposed to be understood.

What does the SIST-TP ETSI/TR 101 895 V1.1.1:2005 document contain?

SIST-TP ETSI/TR 101 895 V1.1.1:2005 contains the stage 1 service description, formal definitions, procedure descriptions, interworking requirements, and service interaction guidance for MWI. Clause 5 covers provisioning, activation, deactivation, invocation, and exceptional handling, while clause 7 lists interactions with other supplementary services.

The informative annexes add interaction tables, service-by-service notes, and a worked example of use. Annex B is especially practical because it explains how MWI behaves alongside services such as CLIP, CW, CCBS, CFNR, CFB, CFU, OCB, CB, 3-PTY, Advice of Charge services, VM, and incoming call barring.

SLOVENSKI STANDARD
01-januar-2005
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0:,±6WRULWYHQLYLGLN
Services and Protocols for Advanced Networks (SPAN); Message Waiting Indication
(MWI) ; Service Aspects
Ta slovenski standard je istoveten z: TR 101 895 Version 1.1.1
ICS:
33.040.35 Telefonska omrežja Telephone networks
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.

Technical Report
Services and Protocols for Advanced Networks (SPAN);
Message Waiting Indication (MWI);
Service Aspects
2 ETSI TR 101 895 V1.1.1 (2001-01)
Reference
DTR/SPAN-110081
Keywords
ISDN, MWI, PSTN, service, stage 1
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© European Telecommunications Standards Institute 2001.
All rights reserved.
ETSI
3 ETSI TR 101 895 V1.1.1 (2001-01)
Contents
Intellectual Property Rights .5
Foreword.5
1 Scope.6
2 References.6
3 Definitions and abbreviations.7
3.1 Definitions . 7
3.2 Abbreviations. 8
4 Description.8
5 Procedures.9
5.1 Provision and withdrawal . 9
5.2 Normal procedures . 10
5.2.1 Registration and erasure. 10
5.2.2 Activation and deactivation . 10
5.2.3 Invocation and Operation . 11
5.2.3.1 In case of an activation . 11
5.2.3.2 Deactivation . 12
5.2.4 Interrogation . 12
5.3 Exceptional procedures. 12
5.3.1 Registration and erasure. 12
5.3.2 Activation and deactivation . 13
5.3.3 Invocation and operation . 13
5.3.4 Interrogation . 13
6 Interworking requirements .13
7 Interaction with other supplementary services .13
7.1 Advice of charge services . 13
7.1.1 Charging information at call set-up time. 13
7.1.2 Charging information during call. 13
7.1.3 Charging information at the end of the call . 14
7.2 Call Waiting. 14
7.3 Call hold . 14
7.4 Call transfer . 14
7.5 Number Identification Services. 14
7.5.1 Calling line identification presentation. 14
7.5.2 Calling line identification restriction. 14
7.5.3 Connected line identification presentation . 14
7.5.4 Connected line identification restriction. 14
7.6 Completion of Calls. 14
7.6.1 Busy subscriber. 14
7.6.2 Completion of calls on no reply. 15
7.7 Conference. 15
7.8 Direct dialling in . 15
7.9 Call Forwarding . 15
7.9.1 Call Forwarding unconditional . 15
7.9.2 Call Forwarding Busy . 15
7.9.3 Call Forwarding no reply. 15
7.9.4 Selective Call deflection. 15
7.10 Free phone . 15
7.11 Malicious call identification. 15
7.12 Multiple subscriber number . 16
7.13 Sub addressing . 16
7.14 Three party. 16
7.15 Outgoing call barring. 16
ETSI
4 ETSI TR 101 895 V1.1.1 (2001-01)
7.15.1 User controlled outgoing call barring. 16
7.15.2 Fixed outgoing call barring. 16
Annex A (informative): Interactions tables.17
A.1 Interactions between receiving user's own service (column 1) and own other services .17
A.2 Interactions between receiving user's own service (column 1) and other call party's services .18
Annex B (informative): Details of interactions .19
B.1 Calling Line Identification Presentation (CLIP).19
B.2 Calling Line Identification Restriction (CLIR) .19
B.3 Call Waiting (CW).19
B.4 Completion of Calls to Busy Subscriber(CCBS).20
B.5 Call Forwarding No Reply (CFNR).20
B.6 Call Forwarding Busy (CFB) .20
B.7 Call Forwarding Unconditional (CFU) .21
B.8 Outgoing Call Barring (OCB) .21
B.9 Selective Incoming Call Barring (SICB) .21
B.10 Call Back (CB) .21
B.11 Three Party Call (3-PTY).21
B.12 Advice of Charge services .21
B.12.1 Charging Information at End of call (AOC-E). 21
B.12.2 Charging information during call (AOC-D). 21
B.13 Voice Mail (VM).22
B.14 Message Waiting Indicator (MWI).22
B.15 Screening List Editing (SLE) .22
B.16 Incoming Call Barring .22
Annex C (informative): Examples of use.23
Annex D (informative): Bibliography.24
History .25
ETSI
5 ETSI TR 101 895 V1.1.1 (2001-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Services and Protocols for Advanced
Networks (SPAN).
The present document describes the general requirements and service aspects for the Message Waiting Indication
(MWI) supplementary service for both, PSTN and ISDN subscriber lines and only for the receiving user parts. It does
not deal with the underlying technology or kind of network used to provide the service.
In accordance with ITU-T Recommendation I.130 [1], the following three level structures are used to describe the
supplementary telecommunications services as provided by European public telecommunications operators under the
pan-European Integrated Services Digital Network (ISDN):
• Stage 1: is an overall service description, from the user's standpoint;
• Stage 2: identifies the functional capabilities and information flows needed to support the service described in
stage 1; and
• Stage 3: defines the signalling system protocols and switching functions needed to implement the service
described in stage 1.
The present document details the stage 1 aspects (overall service description) for the Message Waiting Indication
(MWI) supplementary service.
ETSI
6 ETSI TR 101 895 V1.1.1 (2001-01)
1 Scope
The present document defines the stage one of the Message Waiting Indication (MWI) supplementary service for the
pan-European network as provided by European telecommunications operators. Stage one is an overall service
description from the user's point of view (see ITU-T Recommendation I.130 [1]), but does not deal with the details of
the human interface itself.
The present document provided hereafter takes into account ETS 300 650 [2] for an ISDN MWI service and it provides
a wider scope of the service description. It shall be noted that ETS 300 650 [2]:
• covers only ISDN situations;
• includes both the receiving user's and the controlling user's perspective instead of concentrating on the service as
seen by the receiving user;
• is a restricted view on the facilities that need to be offered commercially (e.g. multiple Mailbox providers);
• includes some constraints.
NOTE 1: In case of conflict between the present document and ETS 300 650 [2], it is assumed that
ETS 300 650 [2] will take precedence.
NOTE 2: The detailed specifications of the procedures used by the controlling user to activate and deactivate the
MWI supplementary service are outside the scope of the present document. It can be based on ISDN
procedures (an example is given in ETS 300 650 [2]) or on other type of operations on other user-network
interfaces (e.g. leased lines etc.).
NOTE 3: It is worth noting that the network capabilities supporting the MWI supplementary service can be used for
other purposes e.g. notification of events other than related to Voice Mail e.g. E-mail.
NOTE 4: The definition of the Man Machine Interface (e.g. light, display, .) on the terminal equipment is outside
the scope of the present document.
2 References
For the purposes of this Technical Report (TR) the following references apply:
[1] ITU-T Recommendation I.130 (1988): "Method for the characterization of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[2] ETSI ETS 300 650: "Integrated Services Digital Network (ISDN); Message Waiting Indication
(MWI) supplementary service; Service description".
[3] ETSI ETS 300 345: "Integrated Services Digital Network (ISDN); Interworking between public
ISDNs and private ISDNs for the provision of telecommunication services; General aspects".
[4] ITU-T Recommendation I.112 (1993): "Vocabulary of terms for ISDNs".
[5] ITU-T Recommendation Q.9 (1988): "Vocabulary of switching and signalling terms".
[6] ITU-T Recommendation I.210 (1993): "Principles of telecommunication services supported by an
ISDN and the means to describe them".
ETSI
7 ETSI TR 101 895 V1.1.1 (2001-01)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Basic Telephone: standard DTMF telephone without display having the normal 0 - 9, * and # keypad
Confirmation Message: it is used to confirm that a specific action has taken place and may also be used implicitly to
prompt for user digits. It is interruptible
Controlling user: user that activates, deactivates and invokes the MWI supplementary service
NOTE: The controlling user is likely to be a mailbox.
Error Message: it is used to notify the user of an incorrect operation code selection or to inform the user that the
requested operation could not be successfully performed. It may also be used to prompt implicitly for user digits. It is
not interruptible
General Information Message: it is a message with a general significance i.e. relating to the waiting situation only but
not containing extra information, i.e. parameters provided by the network or the mailbox provider. It is interruptible.
This general information message can be:
• a text message; or
• a voice message (announcement); or
• a text message combined with voice message (using SDSS capabilities); or
• a visual indication; or
• a special dial tone.
Information Message: it provides information such as feature status or special instructions to the user. It is followed by
either another information message or by a prompt message and is interruptible.
Mailbox provider: provider of a message system that provides a mailbox service to the receiving user
Mailbox service: provides the possibility to record, store, interrogate and delete messages in a message system
Message: verbal or other auditory data recorded by users of a service. Messages may be recorded by callers, subscribers
or system administrators (including automatic system-generated messages)
Message system: stores different kind of messages and initiates activation/deactivation of the MWI supplementary
service. It will be referred as the controlling user
Message Waiting Indication (MWI): supplementary service that enables a receiving user to be informed that there are
one or more messages waiting in a message system. It is typically used between a controlling user and a receiving user
MWI Service Provider: entity (network operator) which provides the MWI service to both the receiving user and the
controlling user
Network operator: entity which provides the network operating elements and resources for the execution of the MWI
supplementary service. There may be one or more network operators between a receiving user and a MWI service
provider
Prompt Message: message that asks the user to enter digits and is interruptible. Upon completion or interruption of the
message, a timer is initiated to set a maximum amount of time to wait for user input
Receiving User: user to whom the MWI supplementary service is provided. The receiving user receives the Message
Waiting Indication (notification) as a result of a MWI invocation originated by a controlling user (e.g. mailbox
provider)
ETSI
8 ETSI TR 101 895 V1.1.1 (2001-01)
Service provider: entity which offers a service to a user. A network operator may also be a service provider
Service; telecommunications service: see ITU T Recommendation I.112 [4], clause 2.2. definition 201
Subscriber line: see ITU T Recommendation Q.9 [5], clause 1 definition 0050
Supplementary service: see ITU T Recommendation I.210 [6], clause 2.4
User: anyone who uses services at a telecommunication access of a network (as calling or called party)
Voice Mail Server: service provider's voice messaging system to which a user is connected for the provision of the
voice mail service
Voice Mail User Agent: user interface that enables a user to control the voice mail server for the recording, forwarding,
storage, etc. of messages
Voice Mail: voice messaging service that allows users, to record voice messages, address and send them to other users,
listen to messages recorded by other users, and store, forward or delete such messages. Many additional features are
possible for such a service, and these will be determined by the service provider according to market needs, technical
capability, etc
Voice Mailbox: logical storage location for messages. This will have a unique address, e.g. it could be the subscriber's
telephone or separate mailbox number
Voice message process: any of the procedures of recording, editing, inserting, storing, deleting, appending, forwarding,
addressing voice mail messages. This is not an exhaustive list
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
CU Controlling User
DTMF Dual Tone Multi Frequency
ISDN Integrated Services Digital Network
MWI Message Waiting Indication
PNO Public Network Operator
PSTN Public Switched Telephone Network
RU Receiving User
SDSS Server Display and Script Services (European equivalent of the ADSI protocol)
4 Description
The Message Waiting Indication (MWI) supplementary service enables a receiving user (RU) to be informed that there
are one or more messages waiting in a message system.
The MWI supplementary service is typically used between a controlling user (CU, e.g. mailbox provider) and a user of
the message service provided (receiving user). The controlling user invokes the MWI supplementary service and the
receiving user receives the notification (or message waiting indication).
It can be activated or deactivated in the receiving user network, upon a request of the controlling user, and shall be
available for receiving users connected to PSTN or ISDN subscriber lines.
See annex C for an example of use of the service.
The MWI supplementary service enables the network, upon an invocation request of a Controlling user, to notify the
receiving user that at least one message is awaiting in a message system.
ETSI
9 ETSI TR 101 895 V1.1.1 (2001-01)
The receiving user shall be notified by the network that a message is awaiting in the following situations:
• as an immediate notification, which is expected to be a persistent indication for the receiving user, as soon as
the MWI supplementary service has been invoked by the controlling user; and/or
• as a deferred notification, which is expected to be a general information message (e.g. announcement), when
the receiving user makes an outgoing call attempt after the MWI service has been invoked by the controlling
user.
Having received this notification, the receiving user can subsequently access the message system to have the message
delivered. The means by which the RU accesses and manages the message system are outside the scope of the present
document.
After this action has been completed, the controlling user may invoke the MWI supplementary service either:
• to deactivate the notification associated with the corresponding message; or
• to deactivate notifications in a global mode (i.e. for all messages in the message system at the time of the
notification, even if not yet delivered).
Depending on the situation (MWI service option), this operation shall result, as soon as the MWI supplementary service
has been invoked for notification deactivation by the controlling user in:
• an immediate notification of deactivation; or
• a deactiv
...