Sure there is CRC in the physical layer encoding, but that will not cause the IP packet latency he described.
StanTheMan TheHardwareFreak www.hardwarefreak.devastation.cc [EMAIL PROTECTED] > -----Original Message----- > From: Chuck Hays [mailto:[EMAIL PROTECTED]] > Sent: Sunday, October 07, 2001 2:53 PM > To: [EMAIL PROTECTED] > Subject: RE: [OT] Qwest + 678 > > > > So with the DMT stardard, the modem and the hardware on the > other end do > NO error correction themselves? I find that hard to believe. > I am not > trying to make enemies here, but what you are saying is > illogical. The > reason we HAVE a DSL modem is that we can't send tcp/ip > directly over a > phone line. Its encoded into some other format (which I > don't claim to > know the details of - DMT/CAP/etc..), and there has to be some kind of > error checking. It would be unreasonable to think otherwise. > > -Chuck Hays > > > > On Sun, 2001-10-07 at 14:24, Stan Hoeppner wrote: > > > > > > > Why is this so definately "malarky"? You don't think its > > > possible that > > > through a higher level of error checking you could > introduce several > > > (15-20) milliseconds of additional latency? I don't > think its utterly > > > ridiculous as a possibility. > > > > Error checking and correction built into the TCP/IP > protocol, and is handled > > at the receiving host. There is no error checking of > packets by routers. > > > > StanTheMan > > TheHardwareFreak > > www.hardwarefreak.devastation.cc > > [EMAIL PROTECTED] > > > >
