Black Box LRU4240 manual Front Panel Display, Default Display, EFS Field, Configuration Options

Dual Trunk E1 Router

Front Panel Display

	The front panel alphanumeric display provides a 2-line, 16-character message. It provides access to
	the Dual Trunk E1 Router via the front panel buttons. Press the UP ARROW and the DOWN
	ARROW keys to move among the various menus. Using the UP ARROW and DOWN ARROW
	keys will move you among the categories listed in Table 3-2.
	Table 3-2 Front Panel Categories
Field	Function
EFS <XXX>%	The percentage of time the E1 link has run without error.
CONFIGURATION	Access the Dual Trunk E1 Router’s basic configuration options, the unit’s serial number,
	and the current software version.
TEST	Run various diagnostics tests.
MONITOR	Track errors and system status parameters.

Default Display

EFS <XXX>%

ALL LINKS

NORMAL

The EFS Field

To reach the EFS (Error Free Seconds) statistic, press the EXIT Button repeatedly until the EFS category appears on the display. The EFS field presents the percentage of seconds in which no error occurred. The higher the percentage, the more stable the E1 connection.

Error-free seconds are calculated using the following formula:

GoodSeconds

EFS = ------------------------------------

TotalSeconds

GoodSeconds = AllSeconds – (BadSeconds + UnavailableSeconds)

The Configuration Options

To reach the Configuration options:

1.Starting from the default display, press the UP or DOWN Arrow button to move among the fields until the CONFIGURATION category appears on the display.

2.Press the ENTER button to enter Configuration mode.

UNIT CONFIG appears on the display.

3.Press either the UP Arrow or the DOWN Arrow to move through the configuration options. The configuration options are presented in Table 3-3.To select a Configuration option, press the ENTER button.

The display changes to reflect the first in the list of editable fields.

4.Press the UP Arrow or the DOWN Arrow to move through the options in the CONFIGURATION menu until the feature you want to change is displayed.

Dual Trunk E1 Router User’s Guide TECHNICAL: 0118 96 56 000 23