AT&T DEFINITY 7100 series Bedienungsanleitung PDF herunterladen (Seite 70)

●

CONTROL CIRCUIT PACKS

Processor (TN786B) (G3vsV2, G3sV2, G3iV2)

The TN786B provides the means for storing and executing the

software which operates the system features. The Processor cir-

cuit pack consists of:

A 80386SX Intel processor

6 megabytes of Flash ROM

4 megabytes of DRAM

An interface to the MBUS

Logic to support the shadowing function in duplicated

systems

In addition, the Processor performs maintenance functions such as:

●

Monitoring the sanity of the system Processor

Reporting system Processor failures

Releasing or resetting the system Processor on dupli-

cated systems

Monitoring and controlling cabinet level power supplies

Managing the alarm panel LED indicators.

●

Processor UN331B (G3rV2)

The UN331B is the main processor that manages the G3rV2 sys-

tem. The processor operates at 33 MHz and uses a MIPS RISC

3000 central processing unit (CPU) chip. The processor’s instruc-

tion set is stored in a 256-Kbyte cache memory on the UN331B.

Switch Node Clock TN572 (G3rV2)

Distributes all of the timing signals that synchronize the switch node

carrier in which it resides. Also receives maintenance data.

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 110 111

Keine Kommentare

AT&T DEFINITY 7100 series Bedienungsanleitung Seite 70