ISO IEC 15049-1997 PDF

Full title and description

Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Advice of charge supplementary services (ISO/IEC 15049:1997).

Abstract

ISO/IEC 15049:1997 defines the Advice of Charge (AoC) supplementary services for Private Integrated Services Networks (PISN). It provides stage‑1 (service view) descriptions and stage‑2 (functional model and information flows) specifications for delivering charging information to users for calls traversing or leaving a PISN. The standard covers different AoC variants (set‑up, during call, and at termination), the structure of charge information, and interactions with related supplementary services and interworking networks.

General information

• Status: Published (International Standard). Confirmed in periodic review (confirmation recorded in 2025).
• Publication date: 15 May 1997 (Edition 1).
• Publisher: ISO/IEC (International Organization for Standardization and International Electrotechnical Commission — JTC 1 / SC 6).
• ICS / categories: 33.040.35 (Telephone networks / PISN).
• Edition / version: Edition 1 (1997).
• Number of pages: 67.

Scope

This standard specifies the Advice of Charge (AoC) supplementary services applicable to Private Integrated Services Networks (PISN). It describes the service semantics, the functional entities and their roles, and the information flows required to convey connection‑related charging information to served users. The scope includes AoC at call set‑up, during an active call, and at call termination, and defines how charge information is formatted, updated and exchanged within the PISN and at its interworking points with other networks. It also indicates interactions with other supplementary services and identifies conformance points for implementers.

Key topics and requirements

• Definitions and terminology for Advice of Charge (AoC) and related PISN concepts.
• Service variants: AoC at set‑up (AOC‑S), AoC during call (AOC‑D), AoC at end (AOC‑E) and their expected behaviours.
• Stage‑1 service descriptions (user‑visible behaviour and service primitives).
• Stage‑2 functional model: entities, responsibilities and relationships required to support AoC.
• Information flows and signalling sequences for conveying charge information between network elements and to the user.
• Specification of information elements (amount, units/currency, timestamps, rate identifiers, increments/updates).
• Interworking considerations where calls traverse other networks (format and mapping of charge information across boundaries).
• Conformance points and testable requirements to support implementation verification and interoperability testing.
• Operational considerations including timing of updates, error handling and minimal privacy/security guidance for charge information.

Typical use and users

Implementers of PISN equipment (PBX and telephony system vendors), telecommunications network operators, protocol and signalling engineers, test laboratories and standards bodies use this standard. It is used when designing or verifying features that present call charge information to users, when implementing inter‑exchange signalling related to charging, and when aligning national/regional profiles or adaptations of PISN supplementary services.

Related standards

ISO/IEC 15049:1997 is part of the PISN specification family and is referenced or adopted by several regional and national standards. Related documents and adaptations include ETSI/EN profiles of the AoC service (EN 301 254 and related ETSI publications), test suite and ATS/PIXIT specifications derived from ISO/IEC 15049 (EN 301 483 parts), AS/NZS 15049:1999 (identical adoption), and other PISN service description standards (for example ISO/IEC publications that define basic PISN bearer and supplementary services such as ISO/IEC 11574 and adjacent PISN stage‑1/2 documents). National adoptions and identical/transposed versions exist (BS ISO/IEC 15049:1997, DIN/EN adoptions, etc.).

Keywords

Advice of Charge; AoC; Private Integrated Services Network; PISN; supplementary services; charging information; service description; functional model; information flows; interworking; conformance.

FAQ

Q: What is this standard?

A: ISO/IEC 15049:1997 defines the Advice of Charge (AoC) supplementary services for Private Integrated Services Networks, specifying both the user‑visible service descriptions and the functional models and information flows needed to deliver call charge information.

Q: What does it cover?

A: It covers AoC service variants (set‑up, during call, end‑of‑call), the format and content of charge information, functional entities and interactions inside a PISN, information flow sequences, interworking considerations with other networks, and conformance points for implementation and testing.

Q: Who typically uses it?

A: PBX and telephony equipment manufacturers, network operators, protocol engineers, test houses and standards committees use the standard to design, implement and verify AoC services in PISNs and in systems that interwork with them.

Q: Is it current or superseded?

A: The original publication date is 15 May 1997 (Edition 1). The standard has been maintained through periodic review and was recorded as confirmed in 2025; users should check national/regional catalogues or standards organizations for any later amendments or region‑specific adaptations before implementation.

Q: Is it part of a series?

A: Yes. It is one of a family of PISN standards produced under ISO/IEC JTC 1/SC 6 covering basic PISN services, bearer service descriptions and other supplementary services. Regional adaptations and related ETSI/EN documents (for example EN 301 254 and EN 301 483 test specifications) are commonly associated with this standard.

Q: What are the key keywords?

A: Advice of Charge, AoC, Private Integrated Services Network, PISN, supplementary services, charging information, functional model, information flows, interworking, conformance.