Considerations

Installing Applications

■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