Date: Tue, 06 Nov 2001 12:00:37 -0500 From: Bill Moran <wmoran@potentialtech.com> To: questions@freebsd.org Subject: Welders causing dial-out to fail Message-ID: <3BE81735.7020302@potentialtech.com>
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This may be a little off-topic ... I have a client who I installed a FreeBSD proxy server for. It uses pppd to dial out on demand. Right from the start, the client has been having problems with the reliability of the dial-out. To make a long story short, after a lot of testing and speculating, we determined that its electric welders in the shop causing the problem. There are five resistance welders in the shop and when all five are working, the Internet connection is simply unusable. If two or three are in use, the Internet is slow, the connection drops a lot and has to dial 2 or 3 times to get a connection. If nobody is welding, the Interenet connection works perfectly. The interference exists on all 4 phone lines, it's audable at times on the voice lines (but never very bad) and has never been bad enough to disrupt the fax machine. We had the phone company (Verizon) come in and they basically said, "Our wiring isn't the problem, you may want to have this building rewired." Does anyone have any experience with this kind of thing? Rewiring the building is pretty much cost-prohibitive. Verizon did install a noise filter at their junction box, but the improvement is very minimal. We're searching a few avenues for a solution, one being the manufacturers of the welding machines, but I thought I'd put the question out to this list and see if anyone else has worked through and found a solution for a problem like this. TIA -- Bill Moran Potential Technology http://www.potentialtech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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