Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rpi!masscomp!peora!tarpit!bilver!bill From: bill@bilver.uucp (Bill Vermillion) Newsgroups: comp.dcom.modems Subject: Re: Telebit T2500 -> TB+ UUCP spoofing problem, HELP Keywords: uucp spoofing T2500 TELBIT Message-ID: <1991Mar4.030916.3429@bilver.uucp> Date: 4 Mar 91 03:09:16 GMT References: <554@shograf.COM> Organization: W. J. Vermillion - Winter Park, FL Lines: 43 In article <554@shograf.COM> jim@shograf.COM (jim morris) writes: > I have been having a problem, and was hoping that someone else >has seen, and solved, this problem. >I am getting my news files batched, compressed and about 100-50k blocks. >After recving about 10 or so, (Sometimes less sometime more), files the >modems stop talking to each other. I can see my end timeing out and resending >something (Probabably ACK??). But I never get anything back from the other >side. The same effect can be achieved by enabling XON/XOFF control in the >modem and recving an XOFF. (But that is NOT what is happening). >Both modems have NO flow control enabled, they both rely on UUCP protocol >for the handshaking. Someone is locking up... Either my modem is not sending >any more, or the other side is not recving or sending anymore. >I have tried every S register setting I, or telebit support, can think of >to no effect. Of course UUCP eventually times out and hangs up. >I get the interrupted file on the next dial-in. >Anyone got any idea what this problem is!! Has anyone else seen this problem. Hm. When I started having this problem last summer I thought it might have been the machine I was using for transmission (old R/S6000 ) but it continued when I moved over to a '386 box. Unit was a Trailblazer plus. T'bit support gave me all sorts of undocumented registers, and we tried them all. Nothing. Nada. Zip. Still the problem. I would get a lockup after about 150k was sent. A big file, or smaller files. With the smaller files all was fine until total data transmitted was in the 150k to 200k range (typically). Sometimes a big file would go all the way through. This is with uucp g spoofing and cts/rts flow contol, as opposed to your xon/xoff. T'bit said they had not seen anything like this. Well that now makes two of us doesn't it. It pointed to the modem itself. Late December I switched over to a T2500. Guess what. Still happens. I think it is the serial ports. Have the wiring done and will try the changeover tonight. You are not alone. -- Bill Vermillion - UUCP: uunet!tarpit!bilver!bill : bill@bilver.UUCP