Installing Applications

Considerations

Only one CAS can be connected to the system.

CAS operates on an approved PC operating with MS-DOS®, version

3.3or later. The PC must be dedicated to CAS.

Hardware and Software Requirements

A typical CAS system consists of the following equipment:

An approved DOS-based PC with the following configuration:

640K RAM

Hard disk drive with at least 3 Mbytes of available space for the application software

parallel printer output

serial SMDR input

One of the following parallel printers:

AT&T Call Accounting System Printer - 80 column

AT&T Applications Printer -132 column

D8W cord and 355AF adapter connecting the SMDR port on the communications system to the COM1 serial port on the PC

MS-DOS Operating System, disk version 3.3 or later

CAS software (CAS/H, CAS Plus)

8-6Call Accounting System

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AT&T Release 2.0 manual Considerations, Hardware and Software Requirements