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auto-polling problem

Posted on 1997-12-03
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Last Modified: 2010-04-12
A PC is automatically polling several sites each night.

I have a client that is able to poll her sites by initiating polling manually, but in the evening when the automatic process initiates, it doesn't poll any of the sites successfully.  It seems to dial, but no transfer of data takes place.  How do I start to troubleshoot this problem? I am in a different state, and I can dial in to the PC which initiates the polling.  I realize this may take some time and experimentation.... what can I try?

clara
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Question by:clara
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cymbolic earned 200 total points
ID: 1017076
For a starter, you can have her change her target sites to your number for testing, or at least insert your number in her polling list.  At least in this way you can tell if her machine ever rings you up.  Also, change the scheduled time so that she can watch the process and report to you on any symptoms, etc.  Finally, if she doesn't have an external modem, or a modem without a speaker, then get one.  You can eliminate basic connection problems by just listening to the connect and answer tone sequence.  Also, with an external modem, she can observe whether or not there is data being transmitted between machines by watching the transmit/recieve signals on the modem.

If you want to spend a little money (and who does), and if she has an external modem, then you can rent a datascope and place it on the rs232 cable between the modem and the computer to trace the actual data that goes back and forth.  I wouldn't try this until you confirm that she is connecting, the remote modem is answereing, and some data signalling is going on, but still you can't complete a transmission.

Also, if yoou can run her same software, why don't you install it and try calling out to the same sites at about the same time?  At least then you can confirm that her target sites are turned on and ready to connect.
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by:clara
ID: 1017077
The problem turned out to be that there was a bug in the software such that polling would not take place if there was a gig or more free space on the hard drive.  The client happened to have that much free space.

When the bug was discovered earlier this year, a .lib file was created to replace the incompatible .lib file on the larger hard drives.  So, I simply replaced the client's .lib file.

I will be adding your trouble-shooting approaches to my notebook to use the next time we have a polling problem, which could be any second!  :-)

Thanks  --- clara  
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