ATL TELECOM USER GUIDE
AM2048A
69
INTRODUCTION
For users that don’t have access to a PC or prefer to configure the AM2048A without the
need for a PC, the operating parameters can be configured using the front panel controls.
Parameter values in the slave modem (NTU) can be set from the front panel of the master
modem (ELU) in a similar manner to the VT100 management system. Front panel
programming is carried out by placing the modem into Programming Mode by pressing the
“Local Loop” and Loop Back” buttons simultaneously and then releasing them. Programming
mode will be indicated by the Status LED flashing. The remaining LED indicators will display
the first parameter number and it’s value.
Note:
If the front panel controls have been previously set to “Loops only” or “Input disabled”
from the VT100 screen, it will not be possible to enter Programming Mode.
The front panel buttons and indicators are used as follows:
OPERATION
The “Local Loop” and “Loop Back” buttons are used to programme the parameters. Once
programming is complete, the “Remote Loop” is pressed to store the new parameter values
(this must be done within 30 second of the last programming action or the modem will
automatically leave programming mode and discard the new values). When “Remote Loop” is
pressed, the modem reboots into its new configuration, if a configuration change warrants.
All of the configurable parameters have a “Parameter Number” displayed as a 3-bit binary
number on the loop active indicators (Local Loop = MSB), and a “Value” displayed as a 5-bit
binary number on the status indicators (Line 1 = MSB).
St
at
us
Li
ne
1
Li
ne
2
Use
r
M
as
te
r
Tes
t
Terminal
Local Loop
Loop Back
Rem Loop
atl
AM2048A
Flashing =
Programming Mode
Parameter
Number
Parameter
Value
Next
Value
Next
Parameter
Enter
Parameters
A P P E N D I X C – P R O G R A M M I N G F R O N T P A N E L
68
ATL TELECOM USER GUIDE
AM2048A
