SIST-TP ETSI/ETR 164 E1:2005

SLOVENSKI STANDARD
SIST-TP ETSI/ETR 164 E1:2005
01-april-2005
'LJLWDOQRRPUHåMH]LQWHJULUDQLPLVWRULWYDPL,6'1,QWHOLJHQWQRRPUHåMH,1
0HGVHERMQRYSOLYDQMHPHGDSOLNDFLMVNLPSURWRNRORP,1,1$3LQGUXJRUD]OLþLFR
,6'1XSRUDEQLãNHJDGHOD,683
Integrated Services Digital Network (ISDN); Intelligent Network (IN); Interaction between
IN Application Protocol (INAP) and ISDN User Part (ISUP) version 2
Ta slovenski standard je istoveten z: ETR 164 Edition 1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST-TP ETSI/ETR 164 E1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST-TP ETSI/ETR 164 E1:2005

---------------------- Page: 2 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
ETSI ETR 164
TECHNICAL January 1995
REPORT
Source: ETSI TC-SPS Reference: DTR/SPS-01006
ICS: 33.080
ISDN, SS7, ISUP, IN, INAP, interaction
Key words:
Integrated Services Digital Network (ISDN);
Intelligent Network (IN);
Interaction between IN Application Protocol (INAP)
and ISDN User Part (ISUP) version 2
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

---------------------- Page: 3 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 2
ETR 164: January 1995
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.

---------------------- Page: 4 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 3
ETR 164: January 1995
Contents
Foreword .7
1 Scope .9
2 References.9
3 Definitions.10
4 Symbols and abbreviations .11
5 Description .12
6 Operational requirements.16
7 Coding requirements.16
7.1 Messages.16
7.2 Parameters .16
7.2.1 Call diversion treatment indicators parameter.16
7.2.1.1 Definition.16
7.2.1.1.1 Call to be diverted indicator .16
7.2.1.2 Coding .16
7.2.2 Called IN number parameter.17
7.2.2.1 Definition.17
7.2.2.1.1 Called IN number.17
7.2.2.2 Coding .17
7.2.3 Call offering treatment indicators parameter.17
7.2.3.1 Definition.17
7.2.3.1.1 Call to be offered indicator.17
7.2.3.2 Coding .17
7.2.4 Charged party identification parameter .18
7.2.4.1 Definition.18
7.2.4.1.1 Charged party identification .18
7.2.4.2 Coding .18
7.2.5 Conference treatment indicators parameter.18
7.2.5.1 Definition.18
7.2.5.1.1 Conference acceptance indicator .18
7.2.5.2 Coding .18
7.2.6 Correlation id parameter.19
7.2.6.1 Definition.19
7.2.6.1.1 Correlation id.19
7.2.6.2 Coding .19
7.2.7 Display information parameter .19
7.2.7.1 Definition.19
7.2.7.1.1 Display information .19
7.2.7.2 Coding .19
7.2.8 SCF id parameter.20
7.2.8.1 Definition.20
7.2.8.1.1 SCF id.20
7.2.8.2 Coding .20
8 State definitions.20
9 Signalling procedures.20
9.1 IN basic call.20
9.1.1 Successful call set-up.21
9.1.1.1 Forward address signalling.21

---------------------- Page: 5 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 4
ETR 164: January 1995
9.1.1.1.1 Connect operation. 21
9.1.1.1.2 Continue operation. 22
9.1.1.1.3 Mapping of the INAP
serviceInteractionIndicators . 22
9.1.1.2 SendChargingInformation operation . 23
9.1.1.3 Address complete or connect message. 23
9.1.1.4 Information message (national option). 24
9.1.1.5 Answer message . 24
9.1.1.6 Continuity check. 24
9.1.1.7 Simple segmentation . 24
9.1.2 Normal call release. 24
9.1.3 Suspend, resume. 24
9.1.4 ReleaseCall operation . 24
9.1.5 Transfer of the called IN number. 24
9.1.5.1 Interworking with an ISUP not supporting the called IN
number parameter . 24
9.1.6 Abnormal conditions . 25
9.1.6.1 General requirements on receipt of unrecognized
signalling information messages and parameters . 25
9.2 IN call with SCP request to collect further digits. 25
9.3 Detection point processing. 25
9.3.1 General . 25
9.3.1.1 Address complete message . 25
9.3.1.2 Answer or connect message. 25
9.3.1.3 Release message . 26
9.3.2 Actions to be performed in case of DPs armed in the request mode. 26
9.3.2.1 Storage and release of initial address information. 26
9.3.2.2 Signalling procedures for connection type allowing
fallback. 26
9.3.2.3 Impact on supplementary services . 26
9.3.2.3.1 User-to-user signalling . 26
9.4 Set-up of an IN call to destination B. 27
9.4.1 Successful call set-up. 27
9.4.1.1 Forward address signalling . 27
9.4.1.1.1 Connect operation. 27
9.4.1.2 Mapping of the INAP serviceInteractionIndicators . 27
9.4.1.3 Sending of backward messages. 27
9.4.1.4 Address complete message . 28
9.4.1.5 Call Progress message (Basic call) . 28
9.4.1.6 Connect message. 28
9.4.1.7 Answer message . 29
9.4.2 Abnormal conditions . 29
9.4.2.1 Handling of unexpected messages. 29
9.4.3 Impact on supplementary services . 29
9.4.3.1 Call hold . 29
9.4.3.2 Malicious call identification. 29
9.5 User interactive dialogue (in-band) . 30
9.5.1 SSP supports requested IP capabilities. 30
9.5.1.1 Successful call set-up . 30
9.5.1.1.1 Forward address signalling . 30
9.5.1.1.2 Address complete message or call
progress message. 30
9.5.1.1.3 Answer message. 30
9.5.1.2 Storage and release of initial address information. 30
9.5.1.3 Signalling procedures for connection type allowing
fallback. 31
9.5.1.4 DisconnectForwardConnection operation. 31
9.5.1.5 Impact on supplementary services . 31
9.5.1.5.1 Connected line identification
presentation. 31
9.5.1.5.2 User-to-user signalling . 32
9.5.2 Assist method - procedure in the initiating SSP. 33
9.5.2.1 Successful call set-up . 33

---------------------- Page: 6 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 5
ETR 164: January 1995
9.5.2.1.1 Forward address signalling.33
9.5.2.1.2 Address complete message .34
9.5.2.1.3 Call Progress message (Basic call).34
9.5.2.1.4 Connect message.34
9.5.2.1.5 Answer message .34
9.5.2.2 Storage and release of initial address information .34
9.5.2.3 DisconnectForwardConnection operation .34
9.5.2.4 Abnormal conditions .34
9.5.2.4.1 Handling of unexpected messages.34
9.5.2.5 Impact on supplementary services.34
9.5.3 Hand-off method - procedure in the initiating SSP.34
9.5.4 Assist/Hand-off method - procedure in the assisting SSP .35
9.5.4.1 Successful call set-up.35
9.5.4.1.1 Forward address signalling.35
9.6 Call gapping .35
9.7 Service filtering .35
9.7.1 Impact on supplementary services.36
9.7.1.1 Closed user group .36
9.8 SCP initiated call.36
9.8.1 Successful call set-up.36
9.8.1.1 Forward address signalling.36
9.8.1.1.1 Continue operation.36
9.9 Actions to be performed in local exchanges.37
9.9.1 Actions in the originating local exchange .37
9.9.1.1 Successful call set-up.37
9.9.1.1.1 Address complete, call progress,
connect or answer message.37
9.9.2 Actions in the destination local exchange .38
9.9.2.1 Successful call set-up.38
9.9.2.1.1 Forward address signalling.38
10 Interaction with other networks.38
11 Interaction between IN basic call and ISDN supplementary services .38
11.1 Call diversion .40
11.1.1 Actions in the service switching point.40
11.1.2 Actions in the destination local exchange .40
11.1.2.1 Call forwarding unconditional.40
11.1.2.2 Call forwarding busy .40
11.1.2.3 Call forwarding on no reply .40
11.1.2.4 Call deflection .40
11.2 Calling line identification presentation/restriction.40
11.2.1 Actions in the service switching point.40
11.3 Completion of calls to busy subscriber .40
11.3.1 Actions in the service switching point.40
11.4 Conference .41
11.4.1 Actions in the originating or destination local exchange.41
11.5 Connected line identification presentation/restriction.41
11.5.1 Actions in the service switching point.41
11.6 Explicit call transfer.41
11.6.1 Actions in the service switching point.41
11.7 Malicious call identification.42
11.7.1 Actions in the service switching point.42
11.7.2 Actions in the destination local exchange .42
11.8 Three party.42
11.8.1 Actions in the originating or destination local exchange.42
12 Interactions between IN services .42
13 Parameter values (timers).42
Annex A: Signalling flows .43

---------------------- Page: 7 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 6
ETR 164: January 1995
Annex B: Coding of the compatibility Information for new information elements. 47
B.1 New parameters . 47
B.1.1 Call diversion treatment indicators . 47
B.1.2 Called IN number . 47
B.1.3 Call offering treatment indicators . 48
B.1.4 Charged party identification. 48
B.1.5 Conference treatment indicators. 49
B.1.6 Correlation id. 49
B.1.7 Display information. 50
B.1.8 SCF id . 50
Annex C: Contents of the Core INAP serviceInteractionIndicators. 51
Annex D: Limitations for ISUP basic call procedures and supplementary services for different types
of IN calls. 52
Annex E: Bibliography. 53
History. 54

---------------------- Page: 8 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 7
ETR 164: January 1995
Foreword
This ETSI Technical Report (ETR) has been produced by the Signalling Protocols and Switching (SPS)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
ETRs are informative documents resulting from ETSI studies which are not appropriate for European
Telecommunication Standard (ETS) or Interim European Telecommunication Standard (I-ETS) status. An
ETR may be used to publish material which is either of an informative nature, relating to the use or the
application of ETSs or I-ETSs, or which is immature and not yet suitable for formal adoption as an ETS or
an I-ETS.

---------------------- Page: 9 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 8
ETR 164: January 1995
Blank page

---------------------- Page: 10 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 9
ETR 164: January 1995
1 Scope
This ETSI Technical Report (ETR) specifies the interaction between the Intelligent Network Application
Protocol (INAP) and the Integrated Services Digital Network (ISDN) User Part (ISUP) of Signalling System
No.7. The basis for the IN part of this ETR is the core INAP (refer to ETS 300 374-1 [8]) and the basis for
the public network part is the ISUP version 2 (refer to ETS 300 356-1 [4]).
Public network signalling systems different from ISUP are not considered in this ETR. The interaction to
the INAP for these signalling systems can, however, be derived from this ETR in conjunction with the
interworking specification for ISUP version 2 (refer to ETS 300 360 [7]).
Although this ETR is titled "Interaction between INAP and ISUP", new protocol elements for the ISUP are
defined in this ETR in order to satisfy IN specific requirements. The reason for that approach is that the
protocol inherent compatibility mechanism allows for a stepwise upgrade of the ISUP functionality.
However, the new function is only available for an IN call, if supported in any of the affected exchanges.
This ETR only considers the case where the Service Switching Point (SSP) is located at a transit level. As
a consequence, this could lead to limitations for ISDN supplementary services.
This ETR does not specify enhancements to the Digital Subscriber Signalling System No. one (DSS1)
protocol, which may be needed due to additional ISUP functions or IN requirements, respectively.
The main subjects of this interaction specification are the following:
- description of specific call control functions for IN calls;
- impacts on the ISUP basic call and the ISDN supplementary services for IN calls;
- enhancement of the ISUP protocol due to IN specific requirements.
2 References
This ETR incorporates, by dated and undated reference, provisions from other publications. These
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 ETR
only when incorporated in it by amendments or revision. For undated references the latest edition of the
publication referred to applies.
[1] ITU-T Recommendation I.112 (1993): "Vocabulary of terms for ISDNs".
[2] ITU-T Recommendation I.210 (1993): "Principles of telecommunication services
supported by an ISDN and the means to describe them".
[3] ITU-T Recommendation Q.1214 (1993): "Distributed functional plane for
Intelligent Network CS-1".
[4] ETS 300 356-1: "Integrated Services Digital Network (ISDN); Signalling System
No.7; ISDN User Part (ISUP) version 2 for the international interface; Part 1:
Basic services [ITU-T Recommendations Q.761 to Q.764 (1993), modified]".

---------------------- Page: 11 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 10
ETR 164: January 1995
[5] ETS 300 356-2: "Integrated Services Digital Network (ISDN); Signalling System
No.7; ISDN User Part (ISUP) version 2 for the international interface; Part 2:
ISDN supplementary services [ITU-T Recommendation Q.730 (1993),
modified]".
[6] ETS 300 356-15: "Integrated Services Digital Network (ISDN); Signalling System
No.7; ISDN User Part (ISUP) version 2 for the international interface; Part 15:
Diversion supplementary services [ITU-T Recommendation Q.732, clauses 2 to
5 (1993), modified]".
[7] ETS 300 360: "Integrated Services Digital Network (ISDN); Signalling System
No.7; Signalling interworking specification for ISDN User Part (ISUP) version 2".
[8] ETS 300 374-1 (1993): "Intelligent Network (IN); Intelligent Network Capability
wSet 1 (CS1); Core Intelligent Network Application Protocol (INAP); Part 1:
Protocol specification".
[9] ETS 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1); User-network interface layer 3 specification
for basic call control; Part 1: Protocol specification [ITU-T Recommendation
Q.931 (1993), modified]".
3 Definitions
For the purposes of this ETR, the following definitions apply:
Call Control Function (CCF): See ITU-T Recommendation Q.1214 [3], §3.3.
Integrated Services Digital Network (ISDN): See ITU-T Recommendation I.112 [1].
service; telecommunication service; See ITU-T Recommendation I.112 [1].
Service Control Function (SCF): See ITU-T Recommendation Q.1214 [3], §3.3.
Service Switching Function (SSF): See ITU-T Recommendation Q.1214 [3], §3.3.
Specialized Resource Function (SRF): See ITU-T Recommendation Q.1214 [3], §3.3.
supplementary service: See ITU-T Recommendation I.210 [2].

---------------------- Page: 12 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 11
ETR 164: January 1995
4 Symbols and abbreviations
For the purposes of this ETR, the following abbreviations apply:
ACM Address Complete Message (ISUP)
ANM Answer Message (ISUP)
CCC Charge Card Calling
CCF Call Control Function
CON Connect message (ISUP)
CPG Call Progress message (ISUP)
CS1 Capability Set 1
DLE Destination Local Exchange
DP Detection Point
DSS1 Digital Subscriber Signalling System No. one
EDP Event Detection Point
EDP-N EDP - Notification
EDP-R EDP - Request
FAR Facility Request message (ISUP)
FE Functional Entity
FOT Forward Transfer message (ISUP)
FRJ Facility Reject message (ISUP)
FRQ Facility Request message (ISUP)
IAM Initial Address Message (ISUP)
IDR Identification Request message (ISUP)
IE Information Element
IN Intelligent Network
INAP Intelligent Network Application Protocol
INR Information Request message (ISUP)
IP Intelligent Peripheral
IRS Identification Response message (ISUP)
ISDN Integrated Services Digital Network
ISUP ISDN User Part
OLE Originating Local Exchange
PRM Premium Rate
REL Release message (ISUP)
RES Resume message (ISUP)
RLC Release Complete message (ISUP)
SAM Subsequent Address Message (ISUP)
SCF Service Control Function
SCP Service Control Point
SDL Specification and Description Language
SGM Segmentation Message (ISUP)
SRF Specialized Resource Function
SS Signalling System
SSF Service Switching Function
SSP Service Switching Point
SUS Suspend message (ISUP)
TCAP Transaction Capabilities Application Part
TDP Trigger Detection Point
TDP-N TDP - Notification
TDP-R TDP - Request
TMR Transmission Medium Requirement
UAN Universal Access Number
UPT Universal Personal Telecommunication
VCC Virtual Card Calling
VOT Televoting

---------------------- Page: 13 ----------------------

SIST-TP ETSI/ETR 164 E1:2005
Page 12
ETR 164: January 1995
5 Description
ITU-T Recommendation Q.1214 [3] provides a distributed functional plane architecture for IN Capability
Set 1 (CS1). Interactions between the following Functional Entities (FEs) are relevant for this specification:
- Call Control Function (CCF);
- Service Switching Function (SSF);
- Service Control Function (SCF);
- Specialized Resource Function (SRF).
The functional entities can be implemented in one or more network elements, called physical entities. The
Service Control Point (SCP) is the physical entity in the intelligent network, that implements the SCF. The
CCF and SSF are realized in the Service Switching Point (SSP) and the SRF is realized in the Intelligent
Peripheral (IP).
SCP
SCF
INAP
SSP
SSF
AccessAccessOLEDLE
ISUPISUPSignallingSignalling
CCF
Figure 1: Signalling configuration for an IN call without SRF support
The SSF contains the capabilities beyond those that are needed for basic call control. Consequently, this
ETR concentrates on the actions that are performed in the CCF.
Figure 1 illustrates in a simplified manner a signalling configuration which is to be considered in this ETR.
In the configuration it is assumed, that SRF support is not needed. The network signalling system used for
call set-up is the ISUP version 2 as specified in ETS 300 356-1 [4]. The interface between SSF and SCF
is the core INAP as specified in ETS 300 374-1 [8].
The interaction between ISUP and INAP takes place in the CCF and SSF. The following main subjects
have to be considered in this area:
- detection point processing in the CCF;
- receipt of INAP operations in the SSF.
Detection point processing
The provision of Detection Points (DPs) is required in the ISUP basic call handling
...