It's modulated and demodulated into analog format. Hence MoDem. Im sure the modem does error checking on THAT process, but the tcp/ip error checking is done when the packet is sent up the stack, which happens at the driver level, not the modem level.
I'm sure Stan can describe this process better. On Sunday 07 October 2001 12:53 pm, you wrote: > 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] -- What, were you expecting something witty?
