SIST-V ETSI/EG 201 722 V1.1.2:2003

• Abstract:

  This document specifies access requirements that service providers have in delivering telephony services over one or more operator's networks. Scope of deliverables: Identify reference points from the network architecture framework; Generic functional requirements/capabilities (including information flows); Aspect of service provider access (ref. ETR 244 section 5.33); Behaviour constraints: e.g. network integrity. Liaison: take input from NA8; liaise output to TC SPS; liaison with TC SMG, ECTRA TRIS and EIF; liaison on work planning to TCs SPS and NA Reference documents: ETR 244, ETR 339, DES/NA-061205, DES/NA-061206

• Status: Published
• Publication Date: 31-Oct-2003
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2003
• Due Date: 01-Nov-2003
• Completion Date: 01-Nov-2003
• Ref Project: ETSI EG 201 722 V1.1.2 (2000-03) - Intelligent Network (IN); Service provider access requirements; Enhanced telephony services

SIST-V ETSI/EG 201 722 V1.1.2:2003 is the Slovene edition of ETSI EG 201 722 Version 1.1.2, published by SIST. It sets out Intelligent Network (IN) service provider access requirements for enhanced telephony services over one or more public telecommunications networks (PTNs), mainly fixed PSTN and ISDN environments, so that service providers and network operators can design the access interface around call control, information handling, charging, and security needs.

What does SIST-V ETSI/EG 201 722 V1.1.2:2003 specify?

SIST-V ETSI/EG 201 722 V1.1.2:2003 specifies the first set of access requirements that service providers need in order to deliver telephony services over PTNs. It focuses on generic functional requirements for the service provider access (SPA), the related interface, and the information flows that support those requirements.

The scope points readers to three main things:

• reference points from the network architecture framework,
• generic functional capabilities, including information flows,
• behavioral constraints such as network integrity.

The document also links the SPA requirements to the roles of service providers (SPs) and public telecommunications network operators (PTNOs), including cases where the same organization plays both roles. It is organized into:

• Clause 4 - background, regulation, security, service interaction, charging, and design guidelines
• Clause 5 - overview of functional requirements and their priorities
• Clause 6 - circuit-related functional requirements
• Clause 7 - non-circuit-related functional requirements
• Clause 8 - architectural view of service provider access
• Bibliography and history

What are the key requirements of SIST-V ETSI/EG 201 722 V1.1.2:2003?

SIST-V ETSI/EG 201 722 V1.1.2:2003 separates requirements into circuit-related (CR) and non-circuit-related (NCR) access. That split matters in practice because some services need the speech path extended to the service provider's equipment, while others only need a control connection.

Access model and priorities

Clause 5 gives the overall framework and assigns each requirement a priority from the service provider viewpoint. Table 1 classifies each capability as high, medium, low, or void for CR and NCR cases.

In practice, this helps an engineer decide whether a feature is expected on a speech-bearing interface, a signalling-only interface, or both. It also shows that a service can be important in one access model and irrelevant in the other.

Calling line identity and related information

Clauses 5.2, 6.2, and 7.2 cover calling line identity (CLI) handling. The document includes reception of CLI, presentation of complete CLI information to the PTN, addition of a CLI, provision of CLI to an SP-initiated call, and relaying of malicious call identification data (MCID).

This matters because CLI is used for authentication, display, routing, and billing-related functions. The document also ties these requirements to national regulation, bilateral agreements, privacy, and CLIR behavior, so implementations have to preserve the correct screening and presentation rules.

Call setup, termination, and routing

Clauses 5.3, 6.3, and 7.3 cover the core call-control functions. The document addresses return speech path connection, routing or indication of originating, incoming, and terminating calls, the cause of an unsuccessful call, provision of destination and routing information, originally dialled digits, disconnection of a call in progress, connection to an interactive voice response unit (IVR), and alternate routing to another point of presence.

In practice, these are the functions that let a service provider intercept, analyze, redirect, or release a call at the right point. The requirements support services such as call screening, number translation, freephone handling, and interactive announcements.

Supplementary services and data handling

Clauses 5.4, 6.4, and 7.4 cover interrogation of a network termination point for data delivery, overriding of incoming call barring, bypassing of call diversion, and message waiting indication. These functions are important when a service provider needs to reach a subscriber line or influence supplementary services during call handling.

For implementers, this means the interface must be able to carry service control actions that sit alongside the normal call path. The document also shows where the PTN can keep control of local restrictions while still supporting the service provider's service logic.

Charging and traffic behavior

Clauses 5.5, 6.5, and 7.5 cover changes in the charging rate of a call. Clause 4.5 explains why this is needed when charging does not follow the standard answer-and-release model.

In practice, this means the PTNO and SP may need accounting or logging for events such as prompt-and-collect interaction, delayed charging, or charge-rate changes during a call. Clauses 5.6, 6.6, and 7.6 add event traceability, traffic control capabilities, and avoidance of cyclical routing of a call.

Security, integrity, and interface design

Clause 4.3 stresses availability, correct billing, fraud protection, confidentiality, and privacy from the end-user side, and availability, correct charging, traceability, and protection against fraudulent use from the operator side. Clause 4.6 states that the SP cannot override PTN restrictions caused by regulation or high-level barrings.

Clause 8 then turns those requirements into an architectural view. It introduces network configuration scenarios, SPAI guidelines, and the functional split between control plane (CP), user plane (UP), and management plane (MP). The service control gateway function (SCIWF) is shown as a place for screening, filtering, mapping, and usage-information collection.

What terms does SIST-V ETSI/EG 201 722 V1.1.2:2003 define?

• public telecommunications network (PTN) - a telecommunications network that provides services to the general public.
• public telecommunications network operator (PTNO) - the entity responsible for developing, provisioning, maintaining, and operating public telecommunications services and networks.
• service provider (SP) - an entity that offers services to subscribers on a contractual basis.
• service provider access interface (SPAI) - the interface that lets a service provider access specific PTN functionality.
• circuit-related interface - a signalling connection where the call connection is extended from the PTN to the service provider's equipment.
• non-circuit-related interface - a control connection between the PTNO and the service provider without extending the call connection to the service provider's equipment.
• calling line identity (CLI) - the number that uniquely identifies the subscriber line used for a call.
• malicious call identification (MCID) - the call identification data used when relaying malicious-call information.

Who uses SIST-V ETSI/EG 201 722 V1.1.2:2003?

SIST-V ETSI/EG 201 722 V1.1.2:2003 is used by service providers, PTNOs, and teams designing or integrating service provider access interfaces. It is also relevant to network architects, signalling and protocol engineers, and operators planning IN-based service delivery over PSTN, ISDN, or similar fixed telephony networks.

Regulatory and compliance teams use it to check access conditions, non-discrimination, privacy, CLI handling, and network integrity issues. It is also useful for buyers or quality managers evaluating whether a proposed interface supports the service functions they need.

What changed in SIST-V ETSI/EG 201 722 V1.1.2:2003 from the previous edition?

The history lists Version 1.1.1 from December 1999 and the published Version 1.1.2 from March 2000. The Slovene edition identifies itself as identical to EG 201 722 Version 1.1.2.

Which standards are used with SIST-V ETSI/EG 201 722 V1.1.2:2003?

SIST-V ETSI/EG 201 722 V1.1.2:2003 cites several standards and related documents that provide vocabulary, service descriptions, security context, and signalling background:

• ETSI ETR 322 - vocabulary of terms and abbreviations for CS-1 and CS-2
• ETSI ETS 300 089 - Calling Line Identification Presentation (CLIP) service description
• ETSI ETR 339 - IN interconnect business requirements
• ETSI ES 201 158 - lawful interception requirements for network functions
• ETSI TR 101 365 - IN interconnect threat analysis
• ETSI TR 101 664 - IN interconnect security features
• ETSI ETS 300 128 - Malicious Call Identification (MCID) service description
• ETSI ETS 300 200 - Call Forwarding Unconditional (CFU) service description
• ETSI ETS 300 090 - Calling Line Identification Restriction (CLIR) service description
• ETSI ETS 300 335 - ISDN User Part (ISUP) test specification
• ITU-T Recommendation Q.1200 - general Intelligent Network recommendation structure

The scope also points to ETR 244, especially section 5.33, and to DES/NA-061205 and DES/NA-061206 as related documents for service provider access and network aspects.

What does the SIST-V ETSI/EG 201 722 V1.1.2:2003 document contain?

SIST-V ETSI/EG 201 722 V1.1.2:2003 contains a requirement summary table, followed by clause-by-clause descriptions of CR and NCR access functions. For each function, it gives a priority, example usage, technical aspects, and an information flow chart.

It also contains architectural figures for call connection scenarios, network configuration scenarios based on IN technology, and the location of CP, UP, and MP functions between SP and PTN domains. These figures and flow charts are used for interface design, implementation planning, and review of how a service provider's logic interacts with the network.

SLOVENSKI STANDARD
01-november-2003
Inteligentno omrežje (IN) - Zahteve dostopa ponudnika storitve - Izboljšane
telefonske storitve
Intelligent Network (IN) - Service provider access requirements - Enhanced telephony
services
Ta slovenski standard je istoveten z: EG 201 722 Version 1.1.2
ICS:
33.040.35 Telefonska omrežja Telephone networks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI Guide
Intelligent Network (IN);
Service provider access requirements;
Enhanced telephony services
2 ETSI EG 201 722 V1.1.2 (2000-03)
Reference
DEG/SPAN-061601
Keywords
protocol, telephony, access, UNI, NNI
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© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI
3 ETSI EG 201 722 V1.1.2 (2000-03)
Contents
Intellectual Property Rights.9
Foreword .9
1 Scope.10
2 References.10
3 Definitions and abbreviations .11
3.1 Definitions.11
3.2 Abbreviations .12
4 Introduction.13
4.1 Current situation .13
4.2 Regulatory aspects.14
4.3 Security aspects .15
4.4 Service interaction aspects .15
4.5 Charging aspects.16
4.6 Guidelines for the service provider access requirements.16
5 Functional requirements for service provider access.16
5.1 Framework and overall list of the requirements .16
5.2 Calling party information handling capabilities.17
5.2.1 Reception of the calling line identity .17
5.2.2 Presentation of the complete CLI information to the PTN.17
5.2.3 Addition of a calling line identity .18
5.2.4 Provision of CLI information to an SP-initiated call .18
5.2.5 Relaying of the malicious call identification data of a received call.18
5.3 Basic call set-up and clear-down capabilities .18
5.3.1 Return speech path connection from the terminating PTN to the calling party.18
5.3.2 Routing of an originating or incoming call from the PTN to the SP.18
5.3.3 Indication of an originating or incoming call from the PTN to the SP.18
5.3.4 Routing of a terminating call from the PTN to the SP .18
5.3.5 Indication of a terminating call from the PTN to the SP.19
5.3.6 Reception of an indication of the cause of an unsuccessful call.19
5.3.7 Provision of information for the destination and routing of a call .19
5.3.8 Call drop-back .19
5.3.9 User interaction without service charging of the end user .19
5.3.10 Reception of the originally dialled digits .19
5.3.11 Disconnection of a call in progress.19
5.3.12 Connection of a call to an interactive voice response unit in the PTN.19
5.3.13 Alternate routing of a call or the indication of a call to another "point of presence" of the SP .20
5.4 Supplementary call and data processing capabilities.20
5.4.1 Interrogation of a network termination point for data delivery.20
5.4.2 Overriding of the "incoming call barring" supplementary service.20
5.4.3 Bypassing of the "call diversion" supplementary service .20
5.4.4 Message waiting indication.20
5.5 Charging-related capabilities.20
5.5.1 Changes in the charging rate of a call .20
5.6 Traffic-related capabilities.20
5.6.1 Event traceability .20
5.6.2 Traffic control capabilities.21
5.6.3 Avoidance of the cyclical routing of a call .21
6 Circuit-related functional requirements .21
6.1 Call connection scenarios .21
6.2 Calling party information handling capabilities.22
6.2.1 Reception of the calling line identity .22
6.2.1.1 Priority .22
ETSI
4 ETSI EG 201 722 V1.1.2 (2000-03)
6.2.1.2 Example of usage .22
6.2.1.3 Technical aspects .23
6.2.1.4 Information flow chart.23
6.2.2 Presentation of the complete CLI information to the PTN.23
6.2.2.1 Priority .23
6.2.2.2 Example of usage .23
6.2.2.3 Technical aspects .23
6.2.2.4 Information flow chart.24
6.2.3 Addition of a calling line identity .24
6.2.3.1 Priority .24
6.2.3.2 Example of usage .24
6.2.3.3 Technical aspects .24
6.2.3.4 Information flow chart.24
6.2.4 Provision of CLI information to an SP-initiated call .25
6.2.4.1 Priority .25
6.2.4.2 Example of usage .25
6.2.4.3 Technical aspects .25
6.2.4.4 Information flow chart.25
6.2.5 Relaying of the malicious call identification data of a received call.25
6.2.5.1 Priority .25
6.2.5.2 Example of usage .26
6.2.5.3 Technical aspects .26
6.2.5.4 Information flow chart.26
6.3 Basic call set-up and clear-down capabilities .28
6.3.1 Return speech path connection from the terminating PTN to the calling party.28
6.3.1.1 Priority .28
6.3.1.2 Example of usage .28
6.3.1.3 Technical aspects .28
6.3.1.4 Information flow chart.28
6.3.2 Routing of an originating or incoming call from the PTN to the SP.28
6.3.2.1 Priority .29
6.3.2.2 Example of usage .29
6.3.2.3 Technical aspects .29
6.3.2.4 Information flow chart.29
6.3.3 Indication of an originating or incoming call from the PTN to the SP.30
6.3.4 Routing of a terminating call from the PTN to the SP .30
6.3.4.1 Priority .30
6.3.4.2 Example of usage .30
6.3.4.3 Technical aspects .30
6.3.4.4 Information flow chart.31
6.3.5 Indication of a terminating call from the PTN to the SP.31
6.3.6 Reception of an indication of the cause of an unsuccessful call.32
6.3.6.1 Priority .32
6.3.6.2 Example of usage .32
6.3.6.3 Technical aspects .32
6.3.6.4 Information flow chart.32
6.3.7 Provision of information for the destination and routing of a call .33
6.3.7.1 Priority .33
6.3.7.2 Example of usage .33
6.3.7.3 Technical aspects .33
6.3.7.4 Information flow chart.33
6.3.8 Call drop-back .34
6.3.8.1 Priority .34
6.3.8.2 Example of usage .34
6.3.8.3 Technical aspects .34
6.3.8.4 Information flow chart.34
6.3.9 User interaction without service charging of the end user .35
6.3.9.1 Priority .35
6.3.9.2 Example of usage .35
6.3.9.3 Technical aspects .35
ETSI
5 ETSI EG 201 722 V1.1.2 (2000-03)
6.3.9.4 Information flow chart.35
6.3.10 Reception of the originally dialled digits .35
6.3.10.1 Priority .36
6.3.10.2 Example of usage .36
6.3.10.3 Technical aspects .36
6.3.10.4 Information flow chart.36
6.3.11 Disconnection of a call in progress.37
6.3.11.1 Priority .37
6.3.11.2 Example of usage .37
6.3.11.3 Technical aspects .37
6.3.11.4 Information flow chart.38
6.3.12 Connection of a call to an interactive voice response unit in the PTN.38
6.3.13 Alternate routing of a call or the indication of a call to another "point of presence" of the SP .38
6.3.13.1 Priority .38
6.3.13.2 Example of usage .38
6.3.13.3 Technical aspects .38
6.3.13.4 Information flow chart.39
6.4 Supplementary call and data processing capabilities.39
6.4.1 Interrogation of a network termination point for data delivery.39
6.4.1.1 Priority .39
6.4.1.2 Example of usage .39
6.4.1.3 Technical aspects .39
6.4.1.4 Information flow chart.39
6.4.2 Overriding of the "incoming call barring" supplementary service.40
6.4.2.1 Priority .40
6.4.2.2 Example of usage .40
6.4.2.3 Technical aspects .40
6.4.2.4 Information flow chart.40
6.4.3 Bypassing of the "call diversion" supplementary service .41
6.4.3.1 Priority .41
6.4.3.2 Example of usage .41
6.4.3.3 Technical aspects .41
6.4.3.4 Information flow chart.41
6.4.4 Message waiting indication.42
6.4.4.1 Priority .42
6.4.4.2 Example of usage .42
6.4.4.3 Technical aspects .42
6.4.4.4 Information flow chart.42
6.5 Charging-related capabilities.43
6.5.1 Changes in the charging rate of a call .43
6.5.1.1 Priority .43
6.5.1.2 Example of usage .43
6.5.1.3 Technical aspects .43
6.5.1.4 Information flow chart.43
6.6 Traffic-related capabilities.44
6.6.1 Event traceability .44
6.6.1.1 Priority .44
6.6.1.2 Example of usage .44
6.6.1.3 Technical aspects .44
6.6.1.4 Information flow chart.45
6.6.2 Traffic control capabilities.45
6.6.2.1 Priority .45
6.6.2.2 Example of usage .45
6.6.2.3 Technical aspects .45
6.6.2.4 Information flow chart.45
6.6.3 Avoidance of the cyclical routing of a call .46
6.6.3.1 Priority .46
6.6.3.2 Example of usage .46
6.6.3.3 Technical aspects .46
6.6.3.4 Information flow chart.46
ETSI
6 ETSI EG 201 722 V1.1.2 (2000-03)
7 Non-circuit-related functional requirements.47
7.1 Call connection scenarios .47
7.2 Calling party information handling capabilities.48
7.2.1 Reception of the calling line identity .48
7.2.1.1 Priority .48
7.2.1.2 Example of usage .48
7.2.1.3 Technical aspects .48
7.2.1.4 Information flow chart.49
7.2.2 Presentation of the complete CLI information to the PTN.49
7.2.2.1 Priority .49
7.2.2.2 Example of usage .49
7.2.2.3 Technical aspects .49
7.2.2.4 Information flow chart.49
7.2.3 Addition of CLI information to a call .50
7.2.3.1 Priority .50
7.2.3.2 Example of usage .50
7.2.3.3 Technical aspects .50
7.2.3.4 Information flow chart.50
7.2.4 Provision of CLI information to an SP-initiated call .51
7.2.4.1 Priority .51
7.2.4.2 Example of usage .51
7.2.4.3 Technical aspects .51
7.2.4.4 Information flow chart.51
7.2.5 Relaying of the malicious call identification data of a received call.51
7.3 Basic call set-up and clear-down capabilities .51
7.3.1 Return speech path connection from the terminating PTN to the calling party.51
7.3.1.1 Priority .51
7.3.1.2 Example of usage .52
7.3.1.3 Technical aspects .52
7.3.1.4 Information flow chart.52
7.3.2 Routing of an originating or incoming call from the PTN to the SP.52
7.3.3 Indication of an originating or incoming call from the PTN to the SP.52
7.3.3.1 Priority .52
7.3.3.2 Example of usage .52
7.3.3.3 Technical aspects .52
7.3.3.4 Information flow chart.53
7.3.4 Routing of a terminating call from the PTN to the SP .53
7.3.5 Indication of a terminating call from the PTN to the SP.54
7.3.5.1 Priority .54
7.3.5.2 Example of usage .54
7.3.5.3 Technical aspects .54
7.3.5.4 Information flow chart.54
7.3.6 Reception of an indication of the cause of an unsuccessful call.55
7.3.6.1 Priority .55
7.3.6.2 Example of usage .55
7.3.6.3 Technical aspects .55
7.3.6.4 Information flow chart.55
7.3.7 Provision of information for the destination and routing of a call .56
7.3.7.1 Priority .56
7.3.7.2 Example of usage .56
7.3.7.3 Technical aspects .56
7.3.7.4 Information flow chart.56
7.3.8 Call drop-back .57
7.3.9 User interaction without service charging of the end user .57
7.3.10 Reception of the originally dialled digits .57
7.3.10.1 Priority .57
7.3.10.2 Example of usage .57
7.3.10.3 Technical aspects .57
7.3.10.4 Information flow chart.57
7.3.11 Disconnection of a call in progress.58
ETSI
7 ETSI EG 201 722 V1.1.2 (2000-03)
7.3.11.1 Priority .58
7.3.11.2 Example of usage .58
7.3.11.3 Technical aspects .59
7.3.11.4 Information flow chart.59
7.3.12 Connection of a call to an interactive voice response unit in the PTN.59
7.3.12.1 Priority .59
7.3.12.2 Example of usage .59
7.3.12.3 Technical aspects .59
7.3.12.4 Information flow chart.59
7.3.13 Alternate routing of a call or the indication of a call to another "point of presence" of the SP .60
7.3.13.1 Priority .60
7.3.13.2 Example of usage .60
7.3.13.3 Technical aspects .60
7.3.13.4 Information flow chart.60
7.4 Supplementary call and data processing capabilities.61
7.4.1 Interrogation of a network termination point for data delivery.61
7.4.1.1 Priority .61
7.4.1.2 Example of usage .61
7.4.1.3 Technical aspects .61
7.4.1.4 Information flow chart.61
7.4.2 Overriding of the "incoming call barring" supplementary service.62
7.4.2.1 Priority .62
7.4.2.2 Example of usage .62
7.4.2.3 Technical aspects .62
7.4.2.4 Information flow chart.62
7.4.3 Bypassing of the "call diversion" supplementary service .63
7.4.3.1 Priority .63
7.4.3.2 Example of usage .63
7.4.3.3 Technical aspects .63
7.4.3.4 Information flow chart.63
7.4.4 Message waiting indication.63
7.4.4.1 Priority .63
7.4.4.2 Example of usage .63
7.4.4.3 Technical aspects .63
7.4.4.4 Information flow chart.64
7.5 Charging-related capabilities.64
7.5.1 Changes in the charging rate of a call .64
7.5.1.1 Priority .64
7.5.1.2 Example of usage .64
7.5.1.3 Technical aspects .
...