Source Of Configuration - Black Box MT160A Manual

MicroCSU/DSU Cards and MicroRacks
• POWER will glow red when the proper power is applied to the rack.
• TD and RD will glow red to indicate an Idle condition or Binary "1" data on
the respective terminal interface signals. Green indicates Binary "0" data.
• CTS will glow red to indicate an Off condition. Green indicates an On
condition. When on, the unit is ready to send data. If CTS remains off,
check the Forced RTS, Circuit Assurance, and Anti-Streaming Settings.
• CD will glow red to indicate that the Idle code is being received. Green
indicates that data is being received.
• DTR will glow to indicate that the DTR signal from the terminal is active.
• NS indicates No Signal. This means the MicroCSU/DSU receiver does not
detect a signal from the digital service provider (or, in the case of short-haul
operation, from the remote MicroCSU/DSU). If NS is lit, check for an
unplugged cable, broken wire, or an incorrect Line Rate selection.
• OS indicates Out-of-Service. This means the MicroCSU/DSU has received an
Out-of-Service signal from the digital service provider and indicates a problem
with the service provider's equipment. If this condition persists, contact your
service provider.
• ER indicates the likelihood of a Bit Error in the received signal. ER will flash
if the MicroCSU/DSU receives illegal bi-polar violations. During the 511 or
511/E test, ER will flash to indicate that the Test Pattern Detector has detected
a bit error.
• TM indicates Test Mode. It will light if the unit is placed into a test mode. The
unit can be placed in test mode by the local user, by the remote user, or by the
service provider.

4.2 Source of Configuration

The unit defaults to the use of Hardware Switches for configuration. It can also be
set to use Soft Switches for configuration, in which case the Hardware Switches will
be ignored.
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