ISO/IEC 11571:1994      Ed.1   19p.(J)     JTC1/SC6
Information technology - Telecommunications and information
exchange between systems -  Numbering and sub-addressing in
private integrated services networks

ISO/IEC 11572:1994      Ed.1  99p.(X)      JTC1/SC6
Information technology - Telecommunications and information
exchange between systems -  Private Integrated Services
Network - Circuit mode bearer services - Inter-exchange
signalling procedures and protocol

ISO/IEC 11573:1994      Ed.1   34p.(Q)     JTC1/SC6
Information technology - Telecommunications and information
exchange between systems -  Synchronization methods and
technical requirements for Private Integrated Services Networks

ISO/IEC 11574:1994      Ed. 1   63p.(V)    JTC1/SC6
Information technology - Telecommunications and information
exchange between systems -  Private Integrated Services
Network - Circuit-mode 64 kbit/s bearer service - Service
description, functional capabilities and information flows

ISO/IEC 11579-1:1994    Ed. 1   9p.(E)     JTC1/SC6
Information technology - Telecommunications and information
exchange between systems -  Private integrated services
network -
Part 1: Reference configuration for PISN Exchanges (PlNX)