Hardware
Hardware
Though the primary components are the same, your DEFINITY ECS can vary widely in size and appearance, depending on your capacity requirements. It may be as small as a single
DEFINITY ECS’s main hardware components are port networks. Up to three port networks can be connected directly to each other. When there are more than three port networks, the connections are made through a Center Stage Switch.
Processor Port Network
Every DEFINITY ECS has one Processor Port Network; it is often the only component in small systems. The Processor Port Network houses the Switch Processing Element.
The Switch Processing Element contains the central processing unit, which supervises system operation. It also contains a mass storage system for loading system software and saving system translations.
Because your application requirements may vary widely, DEFINITY ECS has three types of Switch Processing Elements available with proven capacities of 70,000 calls per hour, 140,000 calls per hour, and 250,000 calls per hour. The performance you realize will depend on the call processing, administrative, and maintenance activities in which your system is engaged.
Expansion Port Network
Expansion Port Networks are used when the system grows beyond the capacity of a single port network or must serve geographically dispersed offices. They provide additional ports as needed. A system can have up to 43 Expansion Port Networks.
Center Stage Switch
The Center Stage Switch is a connection hub that provides port network communication. It is an essential component of a DEFINITY ECS configuration if the system is composed of more than three port networks. Often it is incorporated in smaller configurations to allow for growth. The Center Stage Switch consists of from one to three switch nodes. Switch nodes are composed of one or two switch node carriers, depending on whether the system is being duplicated for enhanced reliability. Each carrier can reside in the Processor Port Network cabinet or an Expansion Port Network cabinet. One switch node can accommodate up to 15 Expansion Port Networks.
Issue 5 January 1998 |
