ISO/IEC 13863:1998

Estado : Publicado (En proceso de revisión)

Esta norma se revisó y confirmó por última vez en 2009. Por lo tanto, esta versión es la actual.

	Formato	Idioma
std 1 173	Papel

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The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site

Resumen

This International Standard specifies the Path Replacement additional network feature (ANF-PR), which is applicable to

various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in

ISO/IEC 11574.

ANF-PR is a feature which applies to an established call, allowing that call's connection between Private Integrated Services

Network Exchanges (PINXs) to be replaced by a new connection. If the new connection is required to satisfy certain criteria,

ANF-PR should be used in conjunction with other supplementary services and/or ANFs. Annex A gives examples of the

circumstances under which ANF-PR can be used and criteria which can govern the selection of the new connection.

Additional network feature specifications are produced in three stages, according to the method described in CCITT

Recommendation I.130 for supplementary services. This International Standard contains the stage 1 and stage 2 specifications

of ANF-PR. The stage 1 specification (clause 6) specifies the feature as seen by an entity which initiates path replacement, the

ANF-PR user. The stage 2 specification (clauses 7, 8 and 9) identifies the functional entities involved in the feature and the

information flows between them. Clause 7 contains the stage 2 specification for basic operation of the feature. Clause 8

contains the stage 2 specification for an enhanced mode of working which can be employed when supported by all the

equipment involved. It allows some of the elements of the old connection to be re-used. Clause 9 contains the stage 2

specification for an optional enhancement of the basic operation of the feature. It allows the ANF-PR user to be located in any

PINX in the old connection and to decide the direction of the new connection.

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