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Using Your Modem
File Transfers
Two terms essential to file transfers are download and upload.
A download occurs when you want to receive a file from a host
site (such as a BBS or another computer). An upload occurs
when you want to send a file to a host site. However, before you
can do this, the following must occur:
G
Your modem and PC must be configured for modem
operation before executing your communications
software.
G
You must have communications software that is
operating and in terminal mode.
G
Your modem must be online with another modem.
G
Determine whether you want to upload or download files.
G
Verify that the character format (7 data bits, odd parity,
1 stop bit; 8 data bits, no parity, 1 stop bit; and so on) is
the same for both the local and remote modems.
G
Select a file transfer protocol (ZMODEM, YMODEM,
XMODEM, Kermit, and so on) that is compatible with
your communications software and remote system.
Some protocols require simultaneous actions at both
ends of the link to start a transfer, while others permit
initiation of the transfer from one side only.
NOTE:
ZMODEM protocol is recommended for its speed and
reliability, if your data communications software supports
this protocol.
A file transfer protocol sets up the ground rules that your modem
and the remote system will use to move files back and forth.
Your communications software manual will describe the various
protocols it supports, and the software program will usually walk
you through the download/upload process.
Issue 1 November 1994
3-13
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