Some senseless babbling from Linda Proulx to All
on 11-10-99  11:40 about Vmodem...

 LP> Greetings,

 LP> Been following the posts & hoped to catch up on what Vmodem was but
 LP> haven't been able to.  Is it a protocol, etc, or something like a
 LP> fossil?

Vmodem stands for Virtual modem.

It's part of a 3rd party serial driver package called SIO, which is an
alternative to the drivers bundled with OS/2.  Their main claim to fame
used to be better performance with DOS comm apps (such as DOS-based BBS
software).  Now the primary usefulness (for most people) is Vmodem.

Basically, you define a virtual com port in the configuration, and when you
execute the vmodem.exe program, there will appear to be a simple modem
attached to that com port, which any analog communications program can use
as a real modem.  Instead of dealing with a phone line, the virtual modem
operates on the TCP/IP stack.  There's a virtual modem protocol that can be
used, requiring another Vmodem on the other end.  Preceding dialed IP
addresses with a # uses that protocol.  By default, the protocol used is
telnet, allowing you to use any communications program (including DOS-based
ones) as a telnet client.

I used to use Vmodem to provide telnet access to my DOS-based BBS, which I
stopped running a bit over four months ago.  The BBS program saw Vmodem as
just another modem, and incoming telnet connections were routed (in
round-robin fashion) to the next available virtual com port, which behaves
like a RING signal.

Mike Ruskai
thannymeister@yahoo.com


... Microsoft:  To badly go where more clever people have avoided going.

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