ATL TELECOM USER GUIDE
AM2048A OS/OM
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Please check the following points if problems are experienced setting up a DSL link:
It is recommended that a pair of units is set up back-to-back and working correctly in the
desired operational mode before deployment.
The units will not get into sync
1
Check that one AM2048 is set to master and the other(s) to slave.
2
Ensure the modem is being used on suitable single or multimode fibre.
3
Check that the transmission distance is not beyond the range of the equipment.
See section 6.
4
If using an adaptor to connect to a BT EPS8/9 line, check that the colour is grey for
the AM2048.
Where can I get a Terminal Emulator program?
Most versions of Windows running on a PC come with a VT100 terminal emulator, such as
HyperTerminal. TeraTerm is the recommended VT100 terminal emulator. This can be
downloaded from the Atl telecom web site. http://www.atltelecom.com/transmission/support
When I plug in the Terminal Emulator I get strange characters on the screen
The bit rate of the serial port is probably set to the wrong speed. The default bit rate for the
AM2048 management serial port is 19.2kbps. Go to the terminal emulator serial port
configuration menu and set the serial port to 19.2kbps, 8 bits, no parity, 1 stop bit, and
Xon/Xoff flow control.
When using the management terminal, the function keys do not work
Most PC based terminal emulators allow the programming of the function keys. If you follow
the installation of TeraTerm the function keys will be set up for you. If the function keys
cannot be programmed then you can type ‘Control F’ followed by the number of the
function key.
E.g. for F8, type ‘control F’, release the keys, type ‘8’.
Loading new application software I get a ‘Stop sending – failed to download’
message
Check that the VT100 terminal emulator that you are using supports binary file transfer and
that the option is selected. TeraTerm is the recommended VT100 terminal emulator as it
supports binary file transfer.
There is a problem with high error rates.
Connect the VT100 terminal emulator and go to the ‘Performance>User Port’ screen.
Using the F8 function key check to see if the performance statistics are roughly the same for
each line and for each end (ELU and NTU) of the line.
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F R E Q U E N T L Y A S K E D Q U E S T I O N S
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ATL TELECOM USER GUIDE
AM2048A OS/OM
