AT&T 555-230-894 manual Overview and Roadmap1, System Reliability

Overview and Roadmap1

This chapter presents general information about the methods to configure your DEFINITY System Generic 3 for system availability.

It also provides a roadmap (a high-level overview of the sequence of steps) for the installation of the system. The roadmap provides references to the appropriate chapter in this book or other books for detailed instructions.

System Reliability

The DEFINITY System G3 provides various system reliability configurations or duplication options. These reliability configurations provide for duplication of G3 system components for higher system availability. The following three types of reliability supply your system’s needs:

■Standard Reliability

■High Reliability

■Critical Reliability

Within these configuration options, you can duplicate the following components:

■Processor Port Network (PPN) Control Carrier

■Expansion Port Network (EPN) Control Carrier

■Inter-Port Network (PN) Connectivity (fibre-optic cabling)

■Tone-Clock

Chapter 4, "Install and Connect the Cabinets" provides more detail on system reliability configurations.

Issue 1 September 1995 1-1