On 8-jan-2007, at 17:00, Henderson, Thomas R wrote:
What do you mean, "detect incorrect shimming using the checksum"? Do you mean context confusion? I'm not sure it's any worse off.
For instance, when some bit error occurs (or, more realistically, a few) so context a001 becomes context b001. The addresses are rewritten as per the wrong context, the checksum doesn't find any fault and hopefully there will be a demuxing problem or a session ends up with incorrect data.