User Manual

Table Of Contents
Optical Master Unit
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd A1829300 rev H 78 (86)
Log in to the OMU, either with RMC, or with a terminal emulation program, such as HyperTerminal™. When
the login is completed, select Terminal Mode, this will give access to the OMU command prompt in the same
way as with HyperTerminal.
When the OMU prompt is accessible, type in the command
ACCESS MODEM <Enter>.
When typing ACCESS MODEM, the controller will send all the characters that are typed directly out to the
modem port. All characters replied back from the modem will go directly to the LMT port and back to the
computer.
To abort an ACCESS MODEM session, press three ‘-‘ in a row (all three within one second) to come back to
the OMU command prompt.
Note! When accessing the modem port the modem might be configured with “echo off”, meaning that the
characters entered will not be echoed back to the screen. In order to enable “echo”, press Enter.
Type
ATE1 <enter>
(invisible)
The modem replies with
OK
indicating that the echo is enabled. All characters entered will now be echoed back to the terminal program.
Below is a list of handy modem commands for trouble shooting via Direct Modem Access. Please refer to the
modem manual for details on the commands below.
Command Description
ATE1 Enables the echo between the modem and the Control Module.
ATDT<Telephone Number> Causes the modem to dial <Telephone Number>. This can be used to verify that the modem correctly
can dial a remote modem.
ATA Answer incoming call
ATH Hang up call. Note, if being online to the remote peer, you need to go to command mode to hang up
the call. This is done by waiting at least one second since last entered character, then press +++ (three
plus signs), all within one second. After one second, the modem will reply OK, meaning that
command mode is entered.
ATM0 Disables the loudspeaker in the modem
ATM1 Enables the loudspeaker in the modem
AT&W Saves the current modem configuration into NVRAM. This means that this configuration will be used
directly after modem power up
AT&F Loads the modem factory configuration
ATZ Resets the modem, and loads the default settings as saved with command AT&W
Trace Modem
For troubleshooting purposes it is possible to trace the actual progress of initializing the modem. This trace is
useful when having problems with the modem initialization.
Go to Terminal Mode and type
TRACE MODEM