On Wed, 28 Feb 1996 10:37:50 +0800  clarence@cs.cuhk.hk wrote:
> Hello,
> 
> I had problem in configuring pppd.  I enclose my options and the error
> meesages here.  Is there anyone can kindly solve my problem.  Thank you
> in advance.
> 
> ======== Error message ========
> Feb 26 14:40:52 pc64 pppd[236]: Serial link is not 8-bit clean:
> Feb 26 14:40:52 pc64 pppd[236]: All received characters had bit 7 set to 0
> Feb 26 14:40:52 pc64 pppd[236]: ioctl(TIOCSETD): Inappropriate ioctl for devi
ce
> Feb 26 14:40:52 pc64 pppd[236]: ioctl(TIOCSETD): Inappropriate ioctl for devi
ce
> Feb 26 14:40:53 pc64 pppd[236]: tcsetattr: Inappropriate ioctl for device
> ===============================

Are you *sure* the other end isn't just hanging up on you?  When our
providers CISCO is down, the modem answers, but hangs up as soon as it
realizes the CISCO isn't answering.  This usually results in "Serial
link is not 8-bit clean" and a timeout during LCP requests...