AT&T's commitment to expanding its switching market base beyond North America is being realized through the development of 5ESS® switch operator services position system (OSPS) features to meet the widely varied needs of operator services customers in the international market. While many features can be provided through adaptation or enhancement of existing OSPS features, many others are unique to the international marketplace. This article describes four features developed for the international OSPS product to provide operators with specialized database access capabilities.

This paper describes the prediction and evaluation of the call‐processing capacity and reliability resulting from use of the 3B20 Duplex (3B20D) Processor in the Traffic Service Position System No. IB (TSPS No. IB). The call‐processing capacity was predicted using a processor real‐time model whose parameter values were determined by laboratory and test‐site measurements. The system reliability was predicted using Markov modeling techniques. Performing an evaluation during TSPS No. IB development provided a means for monitoring progress toward meeting the capacity and reliability objectives.