Automated Coin Toll Service (acts) has recently been developed for use on Traffic Service Position System No. 1. acts automates the handling of most calls paid for at coin stations, gives time and charge quotations, and provides customer notifications. To accomplish this, a new microprocessor‐controlled subsystem is added to tsps. This subsystem generates announcements and monitors coin deposits. Since acts reduces the operator involvement on coin toll calls, it achieves significant savings for the operating companies. acts was developed together with several other associated features. This entire package was first put into service in November 1977, in Phoenix, Arizona. This paper gives a functional description of the new subsystem and details the customer interface with acts and the other features.

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.

At the end of 1981, over 150 Traffic Service Position System No. 1 (TSPS No. 1) offices were in service, equipped with Stored Program Control No. 1A (SPC 1A) processors. Some of these sites had reached the system capacity with respect to real time or memory. The new SPC 1B, which contains a 3B20 Duplex (3B20D) Processor and a Peripheral System Interface (PSI), provides the TSPS No. 1B with additional processor capabilities for additional capacity and future features. This article discusses the techniques used for achieving a smooth retrofit from the TSPS No. 1 to TSPS No. 1B with virtually no interruption of call processing. Special procedures and tools were developed to introduce the SPC 1B onto existing buses and to verify the interfaces with existing peripherals by means of a cycle‐stealing mechanism, while the SPC 1A continues to handle call processing. These procedures were used successfully at the first such retrofit in Redwood City, California, on March 13, 1982. During 1982, 34 additional sites will be retrofitted by Western Electric to accomplish the initial phase of the planned retrofits to TSPS No. 1B.