ISO IEC 15050-2003 PDF

Full title and description

Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Advice Of Charge supplementary services. This International Standard (ISO/IEC 15050:2003, Edition 2) specifies the signalling protocol to support the Advice Of Charge (SS‑AOC) supplementary services between Private Integrated services Network eXchanges (PINX) at the Q reference point within a Private Integrated Services Network (PISN).

Abstract

ISO/IEC 15050:2003 defines the signalling messages, information elements and procedures required to convey charging information to users for calls that leave a PISN and enter another network. It covers three AOC variants: charging information at call set‑up time (AOC‑S), charging information during the call (AOC‑D) and charging information at call termination (AOC‑E). The protocol is specified for the Q reference point (see ISO/IEC 11579‑1).

General information

• Status: Published (Edition 2 — under systematic review process in ISO records).
• Publication date: 21 March 2003 (commonly listed as March/April 2003 in bibliographic records; edition 2 published in 2003).
• Publisher: ISO/IEC (ISO in cooperation with IEC, developed by ISO/IEC JTC 1/SC 6).
• ICS / categories: 33.040.35 (Telephone networks / PISN signalling).
• Edition / version: Edition 2 (2003).
• Number of pages: 59.

Scope

Specifies the inter‑exchange signalling protocol at the Q reference point to support the Advice Of Charge supplementary services (SS‑AOC) for Private Integrated Services Networks. The standard defines service behaviour, message formats, information elements and procedures for conveying charging information to users at call setup, during the call and at call termination between PINXs. It is intended to ensure interoperable AOC service support across exchanges within a PISN.

Key topics and requirements

• Definition and signalling procedures for the three AOC services: AOC‑S (set‑up), AOC‑D (during call) and AOC‑E (end of call).
• Message formats, information elements and coding rules used at the Q reference point.
• Inter‑exchange protocol requirements for PINX interoperability within a PISN (behavioural and procedural rules).
• Relations and interactions with other QSIG / PISN signalling standards and reference configuration (Q reference point defined in ISO/IEC 11579‑1).
• Conformance considerations for implementers to ensure consistent presentation of charging information to users.

Typical use and users

Primary users include telecom protocol engineers, PBX/PINX equipment vendors, system integrators, network operators managing PISNs and test/conformance laboratories implementing or verifying QSIG/PISN signalling and supplementary services (especially AOC). The document is used when implementing or integrating AOC functionality between exchanges.

Related standards

Standards closely related to ISO/IEC 15050:2003 include ISO/IEC 11579‑1 (reference configuration for PISN exchanges and the Q reference point), other PISN/QSIG signalling documents such as ISO/IEC 11582 (generic functional protocol for supplementary services) and related stage‑specification standards in the ISO/IEC 15050 series (the 1997 edition which was superseded by the 2003 edition). Implementers typically consult these documents together for a complete view of Q reference point signalling.

Keywords

PISN, PINX, Q reference point, QSIG, SS‑AOC, Advice of Charge, AOC‑S, AOC‑D, AOC‑E, inter‑exchange signalling, ISO/IEC JTC1/SC6.

FAQ

Q: What is this standard?

A: ISO/IEC 15050:2003 is the International Standard that specifies the inter‑exchange signalling protocol supporting the Advice Of Charge (AOC) supplementary services for Private Integrated Services Networks (PISN).

Q: What does it cover?

A: It covers signalling messages, information elements and procedures at the Q reference point between PINXs to provide charging information to users at call setup, during the call and at call termination (AOC‑S, AOC‑D, AOC‑E).

Q: Who typically uses it?

A: PBX/PINX vendors, telecom equipment integrators, network operators running PISNs and conformance/test labs use this standard when implementing or validating AOC signalling between exchanges.

Q: Is it current or superseded?

A: Edition 2 (ISO/IEC 15050:2003) replaced the 1997 edition (ISO/IEC 15050:1997). The 2003 edition is the published edition; ISO bibliographic records list the 2003 publication (March/April 2003) and the 1997 edition is recorded as withdrawn when the 2003 edition was published.

Q: Is it part of a series?

A: Yes — it belongs to the family of PISN / QSIG signalling standards (ISO/IEC 1157x and ISO/IEC 1505x series) maintained by ISO/IEC JTC 1/SC 6; many related supplementary services and additional network feature specifications are published as companion standards.

Q: What are the key keywords?

A: Key keywords are: Advice Of Charge, SS‑AOC, AOC‑S, AOC‑D, AOC‑E, PISN, PINX, Q reference point, QSIG, inter‑exchange signalling.