Chapter 2. Installation
61200.080L1-1
FXS+ Dual Voice Option Module
11
POWER UP TESTING AND INITIALIZATION
The FXS+ option module executes an abbreviated self
test during the power up sequence, as described in the
TSU 100/600
manual. No initialization input is
required. Any previously configured setting for the
FXS+ is restored automatically upon power up.
Successful Self Test
The green OK LED, located with the Module LEDs on
the front panel, illuminates when a successful self test is
completed and the configuration is successfully restored.
See the section
Front Panel Operation
in the
TSU 100/600
User Manual
.
Failed Self Test
If the FXS+ module fails one or more of the self tests a
message is displayed in the LCD during power up. See
TSU 100/600 User Manual
. Specific failures of the FXS+
module are identified in the appendix
FXS+ Failure
Messages
in this manual.
Operation Alarms
The red ALARM LED with the Module LEDs on the front
panel illuminates when an alarm condition is detected.
Configuration of TX Level (TLP)
For any installation where the analog channel (DS0)
terminates within the Public Switched Telephone
Network, the TX LVL should be set to +3 dBm. For
point-to-point applications where the channel terminates
in other customer equipment, any TX LVL may be used.
A +3 dBm TLP setting attenuates the analog signal
by 3 dB.
