US Robotics Model 5686 failing to send faxes.

A USR 5686 connected to a server running Windows Server 2k3 SP2. The modem will send a fax to a site or two, then fail for the rest. I have very little knowledge of how windows faxing or these devices behave so I need some advice please.

The system will dial a fax number and then successfully send a fax. After a few are sent, the rest fail. Any suggestions?
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Shreedhar EtteCommented:

Update the modem drivers and check. If issues still persist, then change the modem.

Hope this helps,

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I guess you need to start by ruling out any potential issue with the modem. Have you installed the latest firmware/drivers for this modem? Check here: If it's up-to-date or the issue continues, check your events logs to see if any errors are reported there. As a replacement modem is less than $100: If the problem continues, then it's going to be a much more complex issue as the problem points to the server itself.
IT-JesseAuthor Commented:
Thanks for the input. I'm going to try the firmware upgrade tomorrow...
IT-JesseAuthor Commented:
Thanks to both of you for the help. It turns out that this particular modem is not compatible with the proprietary software we are using.
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