Verilink AS420 (34-00294) Product Manual - Manual (Page 19)

I n s t a l l a t i o n a n d C o n f i g u r a t i o n 11
Firmware Download Procedure
This port is accessed through a direct connection. Configure the terminal for
VT100 emulation, 115200 bps, 8 bits, no parity, 1 stop bit.
NOTICE: Commands to the unit are not case sensitive. When the word “enter”
is used in this manual, it means to press the Return or Enter key.
1 Begin the procedure by entering AT . The unit returns “ OK .”.
NOTICE: The unit does not echo the typed characters.
2 Put the unit into download mode by entering AT$Y . The display will return
“ Ready for Flash download. ”
3 Initiate the download or file transfer utility in your communication’s
package.
4 Enter the desired binary file name (.BIN extension) to download. The
transfer can take one or two minutes. After the unit successfully receives the
file, the display will read, “
Flash download was successful. ”
5 After successfully downloading the binary file, reset the unit by
disconnecting and reconnecting the power.
6 After the unit has reset, enter ATI to verify the new software version.
Reloading Previous Firmware
1 To reload the previous version of the firmware, enter AT$P . The display
will read, “ Processing Previous Firmware. ”
2 After the firmware successfully loads, the unit returns “ OK ”.
3 After successfully downloading the binary file, reset the unit by
disconnecting and reconnecting the power.
4 To verify software, type ATI .
Power Bypass
The AS420 can operate in a power bypass mode where the AS420 passes the
signal from the network to the equipment and vice versa whether in a
powered state or not.
5 RXD
6 Ground
7 CTS*
8 Not Connected
Table 2.3 Supervisory Port Pinouts
Pin Description
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