excerpt from Howard Eisenberger:
IMHO, zmodem over telnet is a can of worms. The closest I have ever
come to doing this in DOS is with tcpport + conex (int 14). Downloads
work, but uploads generally fail. I have found that Kermit is better,
and ftp is best. Many hours of frustration only confirmed what I was
told years ago.
Now I quite happily use zmodem with my local dialup BBS and ftp with
an Internet (telnetable) BBS (running BBBS).
(snip)
Do you use ftp on a telnet connection, or do you use ftp with the telnetable BBS
just as if it were an FTP server, without telnet? How would you use ftp on a
telnet connection?
I remember the BBS days when I used xmodem with BBSes, and CompuServe B+ with
CompuServe.
How do you upload or download when telneting to a POP3, SMTP or NNTP server?
These servers know nothing about zmodem. Would you use ASCII transfer?
