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Modem via Satellite Connection Problems

Posted on 1998-06-10
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Last Modified: 2013-12-27
We have an offshore (West Coast) consultant gathering data.  He has a modem on the boat and uses a satellite connection
(very costly) to send us updated data about once a day.  However, when he tries to connect to our Procomm Plus for Windows computer in Host Mode, the connection starts, but never is sustained for more than 10 secs.  We've tried every protocol, buad, and other setting possible.  

When we talk via voice phone, there is a reflection after I say something of a couple seconds, however he does not hear it on his end.  Is there anyway to get us connected via modem?  We are both using pretty current modems and Windows 95.  Any help would be greatly apprcieated.  TIA.
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Question by:acidic13
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6 Comments
 
LVL 12

Accepted Solution

by:
Otta earned 150 total points
ID: 1146886
Try MS KERMIT (ftp://KERMIT.Columbia.EDU)
with "sliding windows" enabled.
It's a "robust" protocol,
designed to handle "noisy" connections.
Use of "sliding windows" will improve
throughput, because several packets will
be sent before the first packet needs to
be acknowledged -- given the inherent lags
in using earth-satellite-earth links,
this is exactly what you need.
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Author Comment

by:acidic13
ID: 1146887
Thanks for the help.  Seems to have pointed in the right direction, but still need more :)  Ill email you direct.
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LVL 12

Expert Comment

by:Otta
ID: 1146888
> I'll email you direct.

How?

Please continue to post here,
so that all can benefit.
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Author Comment

by:acidic13
ID: 1146889
Hmm, hehe, guess I can't email you direct :)  
If you don't mind, I could use some clarification.
Currently we have been using Procomm Plus in host mode to accept the incoming calls.  Would this MSKermit replace that?  Does it have its own host mode?  When I connect to Procomm Plus' Host Mode, how do I know what protocol its using?  Can I make it Kermit?  Does Kermit, ZModem, Xmodem, etc. only concern the actual transmitting of files?    

My email is acidic13@hotmail.com.  

Thanks again for all your help.
0
 

Author Comment

by:acidic13
ID: 1146890
Hmm, hehe, guess I can't email you direct :)  
If you don't mind, I could use some clarification.
Currently we have been using Procomm Plus in host mode to accept the incoming calls.  Would this MSKermit replace that?  Does it have its own host mode?  When I connect to Procomm Plus' Host Mode, how do I know what protocol its using?  Can I make it Kermit?  Does Kermit, ZModem, Xmodem, etc. only concern the actual transmitting of files?    

My email is acidic13@hotmail.com.  

Thanks again for all your help.
0
 
LVL 12

Expert Comment

by:Otta
ID: 1146891
> Currently we have been using Procomm Plus
> in host mode to accept the incoming calls.
> Would this MSKermit replace that?

Yes.  It's both a "terminal-emulator"
and a "file-transfer" package.

> Does it have its own host mode?

Yes.  It's called "server" mode.

> When I connect to Procomm Plus' Host Mode,
> how do I know what protocol its using?

Good question.  I don't know,
because I don't use Procomm Plus.

> Can I make it Kermit?
> Does Kermit, only concern the
> actual transmitting of files?

No.  Kermit emulates Digital's VT-100
and VT-220 and VT-320 terminals.

In addition, you can use KERMIT's file-transfer
protocol to exchange files.

Kermit software offers a consistent
approach to file transfer,
terminal emulation, script programming,
and character-set conversion on hundreds
of different hardware and operating-system
platforms, using diverse communication methods.
 
The nonprofit Kermit Project is entirely
self-supporting.  If you use Kermit software,
please also purchase the appropriate manuals
to help fund our work and to help you
get the most out of your software.

See:  http://www.columbia.edu/kermit/

for details.
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