Owner`s manual
38
If a standard unit is operating in Local mode or MUX mode, the
function of the LEDs is indicated by the white
COMPOSITE
labels
(
TX
,
RX
,
DSR
,
CTS
, and
DCD
). The LEDs reflect the state of the
EIA-232 line for the composite port. If one of these LEDs is
illuminated, this indicates that positive voltage is detected on the
respective signal.
#
The
SELECT
switch on the front panel is used for multiple purposes
depending upon how Local Access and Line Type are configured. If
Local Access is disabled on all terminal ports, the
SELECT
switch is
used to terminate any mode of operation and go to System/Local
mode with Port 1 gaining access to System/Local mode. This is done
by pressing the
SELECT
switch for less than three seconds. When
using Modem Line Type, the
SELECT
switch is also used to initiate
the Telplex to send out String 1 to the external modem when pressed
for more than three seconds while operating in System/Local mode or
in an idle state.
The
SELECT
switch is also used to temporarily reset the serial
configuration and Local Access for Port 1 to factory default values
(9600 baud, 8 data bits, 1 stop bit, no parity, and Local Access
enabled) in the event you forget how the Telplex is configured. This is
done by pressing the
SELECT
switch and holding it down while the
unit is powering up. This procedure is referred to as
fail-safe factory
default access operation
. The terminal device connected to Port 1
should be configured to 9600 baud, 8 data bits, 1 stop bit, and no
parity prior to fail-safe factory default access operation.