scope:

The present document specifies the management aspects of Customer Administration (CA) for Public Switched Telephone Network (PSTN), and public Integrated Services Digital Network (ISDN), in line with descriptions in ETR 047 [67], and restricted to service provisioning and service configuration only. The aspects of the local exchange part of V5 configuration management influenced by the present document are considered as well. The model is restricted to the Operations System to Network Element (OS/NE) interface. Although not included in the present document, the model has been designed to be extendible for Private Branch Exchanges (PBXs), Centrex, mobile, Asynchronous Transfer Mode (ATM), cordless and Universal Personal Telecommunication (UPT) customers. Since Centrex is no standardized service and implementations vary, no Centrex related definitions are introduced into the normative part of the present document. In the informative annex D, a modelling approach for Centrex is given. The ISDN teleservices, bearer services and supplementary services included in this issue of the model have been selected from ETR 010 [65], to test the structure of the model and ensure that it is applicable to all services.