Exploring
the ST-310
System
Components
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ST-310
Board

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The
heart of the ST-310 is a firmware-based board. This board runs
all the routines required for the switch control and the supported
featuresm and it also assumes many functions normally supported by
the SmarTrunk II controller, such as data base maintenance, subscriber
validation and call record accounting. |
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Switch
Rack

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The
ST-310 system components are mounted in a standard 19"
rack panel with twelve slots to accommodate the switching components.
Additional rack panels may be added to the system as required. |
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Power Supply

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Each
rack panel includes a power supply that provides the required system
voltages and supervises the overall system performance. A redundant
1+1 power supply is available for special applications
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ST-422
Switch Board

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All
system switching and interface functions are performed by the ST-422
Switch Board. The ST-422 contains a micro-controller, an analog
matrix switching structure, plus a highly versatile analog input/output
with adjustable levels for each incoming or outgoing path. The
ST-422 also has an RS-232 data port for digital interconnection
with any external device, plus a powerful auxiliary port for future
applications. Each ST-422 can be configured to manage a channel
or a telco line. |