ETSI EN 300 182-1 V1.3.6 (1999-09)

SLOVENSKI STANDARD
SIST EN 300 182-1 V1.3.6:2005
01-april-2005
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Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary
service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification
Ta slovenski standard je istoveten z: EN 300 182-1 Version 1.3.6
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST EN 300 182-1 V1.3.6:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 182-1 V1.3.6:2005

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SIST EN 300 182-1 V1.3.6:2005
ETSI EN 300 182-1 V1.3.6 (1999-09)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Advice of Charge (AOC) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification

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SIST EN 300 182-1 V1.3.6:2005
2 ETSI EN 300 182-1 V1.3.6 (1999-09)
Reference
REN/SPS-05129-1 (1oo90j40.PDF)
Keywords
ISDN, AOC, DSS1, supplementary service,
protocol
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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 1999.
All rights reserved.
ETSI

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SIST EN 300 182-1 V1.3.6:2005
3 ETSI EN 300 182-1 V1.3.6 (1999-09)
Contents
Intellectual Property Rights .5
Foreword .5
1 Scope.7
2 References .7
3 Definitions and abbreviations.8
3.1 Definitions.8
3.2 Abbreviations.9
4 Description. 10
4.1 General description.10
4.2 Charging information at call set-up time (AOC-S) .10
4.3 Charging information during the call (AOC-D) .10
4.4 Charging information at the end of the call (AOC-E) .10
5 Operational requirements. 10
5.1 Provision and withdrawal .10
5.2 Requirements on the originating network side.11
5.3 Requirements on the destination network side.11
6 Coding requirements . 11
6.1 General.11
6.2 Coding of the Facility information element components.11
7 State definitions. 15
8 Signalling procedures at the coincident S and T reference point. 15
8.1 Activation, deactivation and registration.15
8.1.1 Normal operation.15
8.1.2 Exceptional procedures .16
8.2 Invocation and operation .17
8.2.1 Transfer of charging information in the call establishment phase.17
8.2.1.1 Normal operation.17
8.2.1.2 Exceptional procedures.18
8.2.2 Transfer of charging information in the Active state .18
8.2.2.1 Normal operation.18
8.2.2.2 Exceptional procedures.19
8.2.3 Transfer of charging information in the call clearing phase .19
8.2.3.1 Normal operation.19
8.2.3.2 Exceptional procedures.20
8.2.4 Transfer of charging information independent of a bearer at the user-network interface .21
8.2.4.1 Normal operation.21
8.2.4.2 Exceptional procedures.22
ETSI

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SIST EN 300 182-1 V1.3.6:2005
4 ETSI EN 300 182-1 V1.3.6 (1999-09)
9 Procedures for interworking with private ISDNs. 22
10 Interactions with other networks. 22
11 Interactions with other supplementary services. 22
12 Parameter values (timers). 22
13 Dynamic description (SDL diagrams). 23
Annex A (informative): Signalling flows. 34
Annex B (informative): Changes with respect to the previous version of EN 300 182-1
(V1.2.4). 39
History . 40
ETSI

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SIST EN 300 182-1 V1.3.6:2005
5 ETSI EN 300 182-1 V1.3.6 (1999-09)
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
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 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Services and
Protocols for Advanced Networks (SPAN).
The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. one (DSS1)
protocol specification for the Integrated Services Digital Network (ISDN) Advice of Charge (AOC) supplementary
service, as described below:
Part 1: "Protocol specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the user";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network".
In accordance with CCITT Recommendation I.130 [2], the following three level structure is 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 3 aspects (signalling system protocols and switching functions) needed to support
the Advice of Charge (AOC) supplementary service. The stage 1 and stage 2 aspects are detailed in ETS 300 178 [6] to
ETS 300 180 [8] and ETS 300 181 [14], respectively.
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SIST EN 300 182-1 V1.3.6:2005
6 ETSI EN 300 182-1 V1.3.6 (1999-09)
National transposition dates
Date of adoption of this EN: 10 September 1999
Date of latest announcement of this EN (doa): 31 December 1999
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2000
Date of withdrawal of any conflicting National Standard (dow): 30 June 2000
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SIST EN 300 182-1 V1.3.6:2005
7 ETSI EN 300 182-1 V1.3.6 (1999-09)
1 Scope
This first part of EN 300 182 specifies the stage three of the Advice of Charge (AOC) supplementary service for the pan-
European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators at
the T reference point or coincident S and T reference point (as defined in CCITT Recommendation I.411 [1]) by means of
the Digital Subscriber Signalling System No. one (DSS1). Stage three identifies the protocol procedures and switching
functions needed to support a telecommunications service (see CCITT Recommendation I.130 [2]).
In addition, the present document specifies the protocol requirements at the T reference point where the service is
provided to the user via a private ISDN.
The present document does not specify the additional protocol requirements where the service is provided to the user via
a telecommunications network that is not an ISDN.
Three AOC supplementary services exist:
a) Charging information at call set-up time (AOC-S)
The AOC-S supplementary service enables a user to receive information about the charging rates at call set-up
time and also to receive further information during the call if there is a change of charging rates.
b) Charging information during the call (AOC-D)
The AOC-D supplementary service enables a user to receive information on the recorded charges for a call during
the active phase of the call.
c) Charging information at the end of the call (AOC-E)
The AOC-E supplementary service enables a user to receive information on the recorded charges for a call when
the call is terminated.
The AOC supplementary service is applicable to all circuit-switched telecommunication services.
Further parts of the present document specify the method of testing required to identify conformance to the present
document.
The present document is applicable to equipment, supporting the AOC supplementary service, to be attached at either side
of a T reference point or coincident S and T reference point when used as an access to the public ISDN.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] CCITT Recommendation I.411 (1988): "ISDN user-network interfaces - Reference configurations".
[2] CCITT Recommendation I.130 (1988): "Method for the characterization of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[3] ITU-T Recommendation I.112: "Vocabulary of terms for ISDNs".
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SIST EN 300 182-1 V1.3.6:2005
8 ETSI EN 300 182-1 V1.3.6 (1999-09)
[4] ITU-T Recommendation I.210: "Principles of telecommunication services supported by an ISDN
and the means to describe them".
[5] EN 300 403-1 (V1.3): "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling
System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control;
Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".
[6] ETS 300 178: "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information at call set-up time (AOC-S) supplementary service; Service description".
[7] ETS 300 179: "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information during the call (AOC-D) supplementary service; Service description".
[8] ETS 300 180: "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information at the end of the call (AOC-E); Service description".
[9] CCITT Recommendation X.208 (1988): "Specification of Abstract Syntax Notation One (ASN.1)".
[10] CCITT Recommendation X.219 (1988): "Remote Operations: Model, notation and service
definition".
[11] EN 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional protocol for the
support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[12] EN 300 195-1: "Integrated Services Digital Network (ISDN); Supplementary service interactions;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[13] ITU-T Recommendation Z.100: "CCITT Specification and description language (SDL)".
[14] ETS 300 181: "Integrated Services Digital Network (ISDN); Advice of Charge (AOC)
supplementary service; Functional capabilities and information flows".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
activation: implies either a user request for AOC supplementary service(s) or a network performed activation of the
subscribed AOC supplementary service(s) whenever the served user makes an outgoing call.
NOTE 1: The stage 1 description, as specified in ETS 300 178 [6], ETS 300 179 [7] and ETS 300 180 [8], defines
activation as being performed at the time of subscription.
basic communication: this charged item indicates the rate to be applied for the connection to the called user.
billing identification: elements for billing identification inform the served user that the associated charges have been
incurred due to the indicated situation (e.g. a call that has been forwarded at the served user's access).
call attempt: this charged item indicates the cost applied for a call which has been sent to the called user, but the called
user has not yet answered the call.
call control message: message as defined in EN 300 403-1 [5], subclause 3.1, which on sending or receipt causes a
change of the call state at either the network or the user.
call setup: this charged item indicates the cost applied for the connection to the called user when the called user answers
the call.
charging information: information sent to a user in an invoke component or a return result component showing charging-
related information (i.e. either charging rate information, special charging rates, or the recorded charges for the call).
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9 ETSI EN 300 182-1 V1.3.6 (1999-09)
continuous: see subclause A.2.3.1 of ETS 300 178 [6].
flat rate: this specific rate indicates a fixed currency value per event.
Integrated Services Digital Network (ISDN): see CCITT Recommendation I.112 [3], § 2.3, definition 308.
invocation: implies the sending of charging information from the network to the served user.
NOTE 2: The stage 1 description, as specified in ETS 300 178 [6], ETS 300 179 [7] and ETS 300 180 [8], defines
invocation as either a user request for an AOC supplementary service or as the network invocation for all
calls.
invoke component: see EN 300 196-1 [11], subclause 8.2.2.1.
network: DSS1 protocol entity at the network side of the user-network interface.
operation of supplementary services: this charged item indicates the cost applied for the operation of requested
supplementary services.
recorded charges: this information indicates the number of charging units or currency units incurred for a call.
return error component: see EN 300 196-1 [11], subclause 8.2.2.3.
return result component: see EN 300 196-1 [11], subclause 8.2.2.2.
served user: user of a particular ISDN number, who is requesting that charging information should be provided (for all
calls or on request).
service: telecommunications service: see CCITT Recommendation I.112 [3], § 2.2, definition 201.
special charging arrangement: this charged item indicates that a special charging arrangement exists for calculating the
cost of the call.
NOTE 3: The use of this charged item is outside the scope of the standard. It is a matter for the network operator and
the user to which it is sent.
special charging code: this specific code indicates a rate which can identify a charging algorithm that can be used as a
basis for determining the cost of a call.
step function: see subclause A.2.3.1 of ETS 300 178 [6].
supplementary service: see CCITT Recommendation I.210 [4], § 2.4.
user: DSS1 protocol entity at the user side of the user-network interface.
user-to-user information transfer: this charged item indicates the rate to be applied to the transfer of user-to-user
information.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AOC Advice of Charge
AOC-D AOC During the call
AOC-E AOC at the End of the call
AOC-S AOC at call Set-up time
ASN.1 Abstract Syntax Notation One
ATS Abstract Test Suite
DSS1 Digital Subscriber Signalling System No. one
ISDN Integrated Services Digital Network
PICS Protocol Implementation Conformance Statement
TSS&TP Test Suite Structure and Test Purposes
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10 ETSI EN 300 182-1 V1.3.6 (1999-09)
4 Description
4.1 General description
Depending on subscription by the served user, charging information for any of the three supplementary services may be
provided either:
- for all calls; or
- for any call, after a user request to provide charging information.
The charging information given shall relate to the charges incurred on the network to which the user is attached.
Charging information for applications using higher layer protocols which are not defined as teleservices, shall be based
on the bearer services specified.
4.2 Charging information at call set-up time (AOC-S)
When the AOC-S supplementary service is activated, the network shall provide the user with information about the
charging rates at call establishment. In addition, the network shall inform the served user if a change in charging rates
takes place during the call.
The network shall provide the charging information during call establishment or at the latest at call connection. When
there is a change in the charging rate during the call, the network shall send information about the new charging rate to the
served user.
4.3 Charging information during the call (AOC-D)
When the AOC-D supplementary service is activated, the network shall provide the user with charging information for a
call during the active phase of a call. The network shall provide the charging information and transfer it to the served user
in an appropriate message. The supplied charging information shall be provided as a cumulative charge incurred so far for
the call (i.e. charges recorded from the start of the call and until the moment the charging information is sent to the served
user).
When the call is released, the network shall send the recorded charges for the call to the served user in one of the call
control messages clearing the call.
If the network has determined that the call is free of charge, then the network shall send a free-of-charge indication in the
first subsequent message sent to the served user. The network shall not send any further charging information during the
call. When the call is released, the network shall send the charged amount (zero) in a call control message clearing the
call.
4.4 Charging information at the end of the call (AOC-E)
When the AOC-E supplementary service is activated, the network shall provide the served user with charging information
indicating the recorded charges for a call when the call is released. The network shall send the charging information to the
served user in one of the call control messages clearing the call.
5 Operational requirements
5.1 Provision and withdrawal
These supplementary services shall be provided separately by arrangement with the service provider or be generally
available. Withdrawal of the service shall be made at subscriber request or for administrative reasons.
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11 ETSI EN 300 182-1 V1.3.6 (1999-09)
The following subscription options exist for each of the three AOC supplementary services, as defined in table 1.
Table 1: Advice of charge subscription options
Subscription options Value
Provision of service 1. For all calls; or
2. On request on a per call basis.
5.2 Requirements on the originating network side
For the purpose of the present document, the served user of the AOC supplementary service is connected to the originating
network.
The originating network shall make available the type of charging information that is indicated, related to a certain call.
The originating network shall assemble the appropriate charging information, according to the service requirements, and
send it to the user.
NOTE: The charging information may either be generated at the originating network, or generated elsewhere and
sent to the originating network, in due time for the information to be provided to the user according to the
procedures of the present document.
The network shall only include a charged item if the charged item contains information concerning the charges applied to
that call.
The network shall only use those charged items which are appropriate to that network charging mechanism. Thus, in some
networks, the network may, but need not, send some of these items, or combinations of items. Different networks could
give information about the same call in different ways.
If the served user suspends a call, then, as a network option, the originating network shall retain the charging information
for the suspended call as long as the network retains the call identity of the suspended call of the served user.
5.3 Requirements on the destination network side
None identified.
6 Coding requirements
6.1 General
The charging information that the network shall convey to the served user may consist of a number of information units.
The information to be transferred is specified in clause 5 of the stage 1 service descriptions ETS 300 178 [6],
ETS 300 179 [7], and ETS 300 180 [8].
6.2 Coding of the Facility information element components
Table 2 shows the definition of the operations and errors required for the AOC supplementary service using Abstract
Syntax Notation one (ASN.1) as defined in CCITT Recommendation X.208 [9] and using the OPERATION and ERROR
macro as defined in CCITT Recommendation X.219 [10], figure 4/X.219.
The formal definition of the component types to encode these operations and errors is provided in EN 300 196-1 [11],
annex D, clause D.1.
The inclusion of components in Facility information elements is defined in EN 300 196-1 [11], subclause 11.1.
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SIST EN 300 182-1 V1.3.6:2005
12 ETSI EN 300 182-1 V1.3.6 (1999-09)
Table 2: Definition of operations and errors for the AOC supplementary services
Advice-of-Charge-Operations {ccitt identified-organization etsi (0) 182 operations-and-errors
(1)}
DEFINITIONS IMPLICIT TAGS ::=
BEGIN
EXPORTS ChargingRequest, AOCSCurrency, AOCSSpecialArr,
AOCDCurrency, AOCDChargingUnit, AOCECurrency, AOCEChargingUnit,
NoChargingInfoAvailable, ChargingAssociation;
IMPORTS OPERATION, ERROR
FROM Remote-Operation-Notation
{joint-iso-ccitt remote-operations (4) notation (0)}
notSubscribed, notAvailable, notImplemented, invalidCallState
FROM General-Errors
{ccitt identified-organization etsi (0) 196 general-errors (2)}
PartyNumber
FROM Addressing-Data-Elements
{ccitt identified-organization etsi (0) 196 addressing-data-elements (6)};
ChargingRequest ::= OPERATION
ARGUMENT ChargingCase
RESULT CHOICE {
AOCSCurrencyInfoList,
AOCSSpecialArrInfo,
chargingInfoFollows NULL}
ERRORS {notSubscribed, notAvailable, notImplemented,
invalidCallState, NoChargingInfoAvailable}
AOCSCurrency ::= OPERATION -- AOC-S given in currency units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCSCurrencyInfoList }
AOCSSpecialArr ::= OPERATION -- AOC-S for special charging arrangement
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCSSpecialArrInfo }
AOCDCurrency ::= OPERATION -- AOC-D given in currency units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCDCurrencyInfo }
AOCDChargingUnit ::= OPERATION -- AOC-D given in charging units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCDChargingUnitInfo }
AOCECurrency ::= OPERATION -- AOC-E given in currency units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCECurrencyInfo }
AOCEChargingUnit ::= OPERATION -- AOC-E given in charging units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCEChargingUnitInfo }
ChargingCase ::= ENUMERATED {
chargingInformationAtCallSetup (0),
chargingDuringACall (1),
chargingAtTheEndOfACall (2) }
AOCSCurrencyInfoList ::= SEQUENCE SIZE (1.10) OF AOCSCurrencyInfo
AOCSCurrencyInfo ::= SEQUENCE {
chargedItem ChargedItem,
CHOICE {
specificCurrency CHOICE {
durationCurrency [1] DurationCurrency,
flatRateCurrency [2] FlatRateCurrency,
volumeRateCurrency [3] VolumeRateCurrency},
specialChargingCode SpecialChargingCode,
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freeOfCharge [4] NULL,
currencyInfoNotAvailable [5] NULL} }
AOCSSpecialArrInfo ::= INTEGER (1.10)
ChargedItem ::= ENUMERATED {
basicComm
...