kppp and modem with usb<->serial adapter
James Richard Tyrer
tyrerj at acm.org
Fri Jul 23 02:01:40 BST 2004
Dani Belz wrote:
> I have an external serial modem which I plugged with a usb<-> serial adapter
> to my laptop. This works fine with pilot-link and kppp. It also works fine
> with 'pon', a dial up tool from debian.
> It does not work with kppp! :( kppp recognizes my modem (with "Query
> modem...", it dials but finally, it can't start pppd. The error is:
> Jul 10 12:56:36 beaves pppd: pppd 2.4.2 started by dani, uid 1000
> Jul 10 12:56:36 beaves pppd: using channel 8
> Jul 10 12:56:36 beaves pppd: Using interface ppp0
> Jul 10 12:56:36 beaves pppd: Connect: ppp0 <--> /dev/ttyUSB0
> Jul 10 12:56:36 beaves pppd: sent [LCP ConfReq id=0x1 <asyncmap
> 0xa0000> <magic 0xc64d1d41> <pcomp> <accomp>]
> Jul 10 12:57:06 beaves pppd: Terminating on signal 15.
> Jul 10 12:57:06 beaves pppd: sent [LCP TermReq id=0x2 "User request"]
> Jul 10 12:57:09 beaves pppd: sent [LCP TermReq id=0x3 "User request"]
> Jul 10 12:57:12 beaves pppd: Connection terminated.
> Jul 10 12:57:12 beaves pppd: Exit.
> Anyone can give me any hint? It wouldn't be such a strange problem if I
> couldn't dial up at all. But as I said, it works with 'pon'...
I must admit that I don't have any of those USB things and consider myself
Do you hear the 'Ping" from the modem's speaker?
What happens in you click the: "Query Modem" button on the: "Modem" tab in the
KPPP configure dialog. Does this work OK?
But, I suspect that both of these questions will have answerers that it seems
OK. So, I guess that this is a USB issue.
I suppose that you have one of those computers that doesn't have a real serial
port (RS-232). :-)
I suspect that there may be some problem because the USB connection probably
doesn't have DTR. So, you might try changing the: "Flow control" setting. Try
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