XMODEM Protocol
XMODEM is the slowest and least advanced of the X/Y/ZMODEM family of file
transfer protocols and should be used only when the remote system doesn't
support YMODEM or ZMODEM.
XMODEM doesn't transfer the names of files, and it may alter the size and
hash code of transferred files.
Use the xtransmit command to send
(upload) a file to the remote system, and the xreceive
command to get (download) a file from the remote system using XMODEM protocol.
To use XMODEM, you will usually need to follow these steps:
-
Start the remote system's XMODEM file transfer program.
-
Make sure the remote XMODEM settings are appropriate.
-
Use the appropriate command(s) to start the file transfer remotely.
-
Press the change key to return to Autolog's command prompt.
-
Make sure Autolog's x1k and xcrc
settings are appropriate.
-
Enter the xreceive or xtransmit command.
XMODEM requires a transparent 8-bit data path: All characters, including
XON and XOFF and characters with the eighth bit on, must be able to be
sent over the communications channel.
XMODEM-g
Autolog also supports an uncommon "turbo" variation of XMODEM called XMODEM-g.
XMODEM-g can be used when you have a clean, error-free connection, such
as a reliable modem connection. Use the command xgtransmit to
send a file using XMODEM-g protocol, and xgreceive to receive
a file using XMODEM-g protocol.