ETSI EN 300 210-1 V1.2.4 (1998-06)

SLOVENSKI STANDARD
SIST EN 300 210-1 V1.2.4:2005
01-april-2005
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Integrated Services Digital Network (ISDN); Freephone (FPH) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification
Ta slovenski standard je istoveten z: EN 300 210-1 Version 1.2.4
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST EN 300 210-1 V1.2.4:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 210-1 V1.2.4:2005

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SIST EN 300 210-1 V1.2.4:2005
EN 300 210-1 V1.2.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Freephone (FPH) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification

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SIST EN 300 210-1 V1.2.4:2005
2 EN 300 210-1 V1.2.4 (1998-06)
Reference
REN/SPS-05145-P-1 (1y090iqo.PDF)
Keywords
ISDN, FPH, DSS1, supplementary service
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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 1998.
All rights reserved.
ETSI

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SIST EN 300 210-1 V1.2.4:2005
3 EN 300 210-1 V1.2.4 (1998-06)
Contents
Intellectual Property Rights. 5
Foreword. 5
1 Scope . 7
2 Normative references. 7
3 Definitions. 8
4 Abbreviations.9
5 Description . 9
6 Operational requirements . 10
6.1 Provision and withdrawal.10
6.2 Requirements on the originating network side.10
6.3 Requirements on the destination network side .10
7 Coding requirements. 10
7.1 Coding of the Facility information element components.10
7.2 Coding of the Notification indicator information element .11
8 State definitions. 12
9 Signalling procedures at the coincident S and T reference point . 12
9.1 Activation, deactivation and registration .12
9.2 Invocation and operation.12
9.2.1 Operation at the calling user.12
9.2.1.1 Normal operation.12
9.2.1.2 Exceptional procedures .12
9.2.2 Operation at the served user.12
9.2.2.1 Normal operation.12
9.2.2.2 Exceptional procedures .13
9.2.3 Operation at the served user when queueing is required .13
9.2.3.1 Acceptance of a monitoring request for the FPH supplementary service.13
9.2.3.1.1 Normal operation.13
9.2.3.1.2 Exceptional procedures.13
9.2.3.2 Queue processing for the FPH supplementary service.13
9.2.3.2.1 Normal operation.13
9.2.3.2.2 Exceptional procedures.13
9.2.3.3 Determination of the served user free.13
9.2.3.3.1 Normal operation.13
9.2.3.3.2 Exceptional procedures.14
9.2.3.4 Presentation of a queued call.14
9.2.3.4.1 Normal operation.14
9.2.3.4.2 Exceptional procedures.14
10 Procedures for interworking with private ISDNs . 14
10.1 Procedures where a private ISDN exists at the calling side.14
10.2 Procedures where a private ISDN exists at the called side, and busy monitoring is performed by the
private ISDN.14
10.2.1 Normal operation .14
10.2.2 Exceptional procedures.16
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SIST EN 300 210-1 V1.2.4:2005
4 EN 300 210-1 V1.2.4 (1998-06)
11 Interactions with other networks. 16
12 Interactions with other supplementary services. 16
13 Parameter values (timers). 16
14 Dynamic description (SDL diagrams). 16
Annex A (informative): Signalling flows . 20
Annex B (informative): Premature release reasons and corresponding cause value . 24
Annex C (informative): Assignment of object identifier values . 25
Annex D (informative): Changes with respect to the previous ETS 300 210-1 . 26
History. 27
ETSI

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SIST EN 300 210-1 V1.2.4:2005
5 EN 300 210-1 V1.2.4 (1998-06)
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 free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.fr/ipr or 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 Signalling
Protocols and Switching (SPS).
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) Freephone (FPH) 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, the following three level structure is used to describe the
supplementary telecommunication services as provided by European public telecommunications operators under the pan-
European 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 FPH supplementary service. The stage 1 and stage 2 aspects are detailed in ETS 300 208 and ETR 209, respectively.
The present version updates the references to the basic call specifications.
ETSI

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SIST EN 300 210-1 V1.2.4:2005
6 EN 300 210-1 V1.2.4 (1998-06)
National transposition dates
Date of adoption of this EN: 19 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
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SIST EN 300 210-1 V1.2.4:2005
7 EN 300 210-1 V1.2.4 (1998-06)
1 Scope
This first part of EN 300 210 specifies the stage three of the Freephone (FPH) 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 ITU-T Recommendation I.411 [6]) by means
of the Digital Subscriber Signalling System No. one (DSS1) protocol. Stage three identifies the protocol procedures and
switching functions needed to support a telecommunication 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 telecommunication network that is not an ISDN.
The FPH supplementary service enables to allocate to the served user the charges for calls placed to the freephone
number.
The FPH 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 FPH 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 Normative references
References may be made to:
a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in which
case, subsequent revisions to the referenced document do not apply; or
b) all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
c) all versions subsequent to and including the identified version (identified by "onwards" following the version
identity); or
d) publications without mention of a specific version, in which case 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 E.164: "Numbering plan for the ISDN era".
[2] CCITT Recommendation I.130 (1988): "Method for the characterisation of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[3] ITU-T Recommendation I.112: "Vocabulary of terms for ISDNs".
[4] ITU-T Recommendation I.210: "Principles of telecommunication services supported by an ISDN
and the means to describe them".
[5] ITU-T Recommendation I.221 (1993): "Common specific characteristics of services".
[6] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".
[7] CCITT Recommendation Q.9 (1988): "Vocabulary of switching and signalling terms".
[8] CCITT Recommendation X.208 (1988): "Specification of Abstract Syntax Notation One (ASN.1)".
[9] CCITT Recommendation X.219 (1988): "Remote operations: Model, service and notation".
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[10] CCITT Recommendation Z.100 (1988): "Specification and Description Language (SDL)".
[11] EN 300 403-1: "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]".
[12] EN 300 403-2: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System
No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 2:
Specification and Description Language (SDL) diagrams".
[13] EN 300 195-1: "Integrated Services Digital Network (ISDN); Supplementary service interactions;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[14] 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".
3 Definitions
For the purposes of the present document, the following definitions apply:
busy: See ITU-T Recommendation I.221 [5], subclause 2.1.5.
call: See CCITT Recommendation Q.9 [7], definition 2201.
call control message: A message defined in EN 300 403-1 [11], subclause 3.1, which on sending or receipt causes a
change of the call state at either the network or the user. Call control messages also include the INFORMATION message
and PROGRESS message.
call queuing: The possibility for a served user to have freephone calls meeting busy at the scheduled destination to be
placed in a queue and connected as soon as a not busy is detected.
call reference: (excluding dummy call reference) an identifier of a signalling transaction. The signalling transaction may
either be bearer related, in which case the signalling transaction can be used to control that bearer, or bearer independent,
in which case there is no bearer associated with that signalling transaction. Where there is only one bearer required for a
call, then the call reference of the associated bearer related signalling transaction may be used to identify the call.
call state: A state as defined in EN 300 403-1 [11], subclause 2.1 for either the user or the network as appropriate. A call
state may exist for each call reference value (and for each additional responding Connection Endpoint Identifier (CEI) in
the incoming call states.
Data Link Connection Endpoint Identifier; Connection Endpoint Identifier (CEI): Identifier used by a layer 3
protocol entity to address its peer entity.
freephone call: A call to which the FPH supplementary service applies, and made to a freephone number.
freephone number: A number identifying the freephone subscriber. The freephone service access code and the freephone
number concatenated are an ISDN number.
Integrated Services Digital Network (ISDN): See ITU-T Recommendation I.112 [3], definition 308.
invoke component: See EN 300 196-1 [14], subclause 8.2.2.1. Where reference is made to an "xxxx" invoke component,
an invoke component is meant with its operation value set to the value of the operation "xxxx".
ISDN number: A number conforming to the numbering plan and structure specified in CCITT Recommendation E.164 [1].
network: The DSS1 protocol entity at the network side of the user-network interface.
private network: The DSS1 protocol entity at the user side of the user-network interface when a T reference point
applies.
reject component: See EN 300 196-1 [14], subclause 8.2.2.4.
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return error component: See EN 300 196-1 [14], subclause 8.2.2.3. Where reference is made to an "xxxx" return error
component, a return error component is meant which is related to an "xxxx" invoke component.
return result component: See EN 300 196-1 [14], subclause 8.2.2.2. Where reference is made to an "xxxx" return result
component, a return result component is meant which is related to an "xxxx" invoke component.
served user: The DSS1 protocol entity at the user side of the user-network interface used to control the FPH
supplementary service when a coincident S and T reference point applies.
service; telecommunication service: See ITU-T Recommendation I.112 [3], definition 201.
service access code; freephone service access code: A number allocated by the network operator, to indicate that the
following freephone number is a destination to be called using the FPH supplementary service.
subscriber: The customer who has subscribed to the FPH supplementary service. The customer may have a set of
accesses visible through a unique freephone number.
supplementary service: See ITU-T Recommendation I.210 [4], subclause 2.4.
user: The DSS1 protocol entity at the user side of the user-network interface when a coincident S and T reference point
applies.
4 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ASN.1 Abstract Syntax Notation one
CEI Connection Endpoint Identifier
DSS1 Digital Subscriber Signalling System No. one
FPH Freephone
ISDN Integrated Services Digital Network
5 Description
The procedures for activation and deactivation of a record are outside the scope of the present document.
If a user subscribes to the FPH supplementary service, then the network, in conjunction with the appropriate numbering
authorities, shall allocate a special number (freephone number) to that user.
In particular, the served user may have incoming calls routed to his accesses or rejected according to a set of features.
Following the arrangement between the network operator and the subscriber, the network operator provides for the
registration of these features in the network.
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6 Operational requirements
6.1 Provision and withdrawal
Provision of the FPH supplementary service requires an arrangement between the network and the subscriber.
Withdrawal of this service shall be at the request of the subscriber or for service provider reasons.
6.2 Requirements on the originating network side
No requirements beyond basic call as specified in EN 300 403-1 [11].
6.3 Requirements on the destination network side
The destination network side shall support the status request procedures defined in subclause 10.3 of EN 300 196-1 [14]
at the coincident S and T reference point.
7 Coding requirements
7.1 Coding of the Facility information element components
Table 1 shows the definition of the operations and types required for the FPH supplementary service using ASN.1 as
defined in CCITT Recommendation X.208 [8] and using the OPERATION and ERROR macro as defined in figure
4/X.219 of CCITT Recommendation X.219 [9].
The formal definition of the component types to encode these operations and types is provided in EN 300 196-1 [14],
clause D.1.
The inclusion of components in the Facility information elements is defined in subclause 11.2.2.1 of EN 300 196-1 [14].
Table 1: Definition of the operations and errors for the FPH supplementary service
Freephone-Operations {ccitt identified-organization etsi(0) 210 operations-and-errors(1)}
DEFINITIONS EXPLICIT TAGS ::=
BEGIN
EXPORTS     CallFPH, Monitor-T-FPH, Free-T-FPH, Call-T-FPH;
IMPORTS     OPERATION, ERROR
        FROM Remote-Operation-Notation
          {joint-iso-ccitt remote-operations(4) notation(0)}
        notAvailable, notImplemented
        FROM General-Errors
          {ccitt identified-organisation etsi(0) 196 general-errors(2)}
        PartyNumber
        FROM Addressing-Data-Elements
          {ccitt identified-organisation etsi(0) 196 addressing-data-elements(6)}
        Q931InformationElement
        FROM Embedded-Q931-Types
          {ccitt identified-organisation etsi(0) 196 embedded-q931-types(7)};
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Table 1 (concluded): Definition of the operations and errors for the FPH supplementary service
CallFPH     ::= OPERATION
          ARGUMENT  calledFreephoneNr    CalledFreephoneNr -- optional
Monitor-T-FPH  ::= OPERATION
          ARGUMENT SEQUENCE {
                q931InfoElement     Q931InformationElement,
                servedUserDestination  PartyNumber,
                queueIdentity      QueueIdentity OPTIONAL}
          RESULT
          ERRORS {  notAvailable,
                notImplemented}
-- the Bearer capability, High layer compatibility (optional) and Low layer compatibility
-- (optional) information elements shall be embedded in q931InfoElement.
Free-T-FPH   ::= OPERATION
          ARGUMENT SEQUENCE {
                servedUserDestination  PartyNumber,
                fPHReference      FPHReference}
Call-T-FPH   ::= OPERATION
          ARGUMENT SEQUENCE {
                fPHReference      FPHReference,
                calledFreephoneNr    CalledFreephoneNr OPTIONAL}
FPHReference ::= INTEGER (0.127)
CalledFreephoneNr ::= PartyNumber
QueueIdentity ::= INTEGER (0.127)
fPHOID OBJECT IDENTIFIER ::= {ccitt identified-organization etsi(0) 210
   freephone-operations(1)}
callFPH CallFPH ::= globalValue {fPHOID callFPH-operation(1)}
monitor-T-FPH Monitor-T-FPH ::= globalValue {fPHOID monitor-T-FPH-operation(2)}
free-T-FPH Free-T-FPH ::= globalValue {fPHOID free-T-FPH-operation(3)}
call-T-FPH Call-T-FPH ::= globalValue {fPHOID call-T-FPH-operation(4)}
END -- Freephone-Operations
7.2 Coding of the Notification indicator information element
For the coding of the Notification indicator information element see subclause 11.2.2.2 of EN 300 196-1 [14].
Table 2 contains the additional codepoint for the FPH supplementary service which shall be employed in octet 3 of the
Notification indicator information element.
Table 2: Codepoint in the Notification indicator information element
Bits
7 6 543 2 1
0 0 0 0 1 0 0 call completion delay
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8 State definitions
The call states as defined in subclause 2.1 of EN 300 403-1 [11], shall be utilised in the FPH supplementary service
operation, as appropriate.
Table 3 shows the network states which are defined for the busy status handling at the served user.
Table 3: Network states for the FPH supplementary service
Network state Description
FPH Idle The FPH supplementary service is idle.
FPH Busy Monitoring The FPH supplementary service has accepted a busy monitoring request.
FPH Await Status Waiting for the user's response to the status request procedure.
9 Signalling procedures at the coincident S and
T reference point
9.1 Activation, deactivation and registration
Not applicable, i.e. signalling procedures for the control of the FPH supplementary service is outside the scope of the
present document.
9.2 Invocation and operation
9.2.1 Operation at the calling user
9.2.1.1 Normal operation
In order to establish an outgoing freephone call, and in accordance with the procedures of subclause 5.1 of EN 300 403-1
[11], the user shall indicate in the Called party number information element the freephone service access code followed
by the freephone number, encoded as if it was any other ISDN number.
On receiving an outgoing call request, according to the procedures of subclause 5.1 of EN 300 403-1 [11], with a Called
party number information element indicating a freephone service access code, and with a valid freephone number, the
network shall treat the call as a freephone call.
As a network option, a freephone call may be queued when the destination user is busy, until such a time as that the user
becomes not busy. When a freephone call is queued, the network shall send the ALERTING message to the calling user,
containing a Notification indicator information element specifying "call completion delay". When a queued freephone call
is subsequently presented to the served user, a second ALERTING message shall not be sent to the calling user.
9.2.1.2 Exceptional procedures
The exceptional procedures at the calling user's interface shall be according to subclause 5.8 of EN 300 403-1 [11].
9.2.2 Operation at the served user
9.2.2.1 Normal operation
On presenting a freephone call to the destination user, using the procedures of subclause 5.2 of EN 300 403-1 [11], as a
network option, the network may include in the SETUP message a Facility information element containing a CallFPH
invoke component.
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As a further network option, the CallFPH invoke component may contain the CalledFreephoneNr parameter, indicating the
ISDN number (freephone service access code and freephone number) requested by the calling user.
9.2.2.2 Exceptional procedures
If a reject component is received in response to a SETUP message containing a Facility information element with a
CallFPH invoke component, the network shall take no action, and basi
...