ive noticed overnight my CRC / RS counts go up...eevn when router is not in use, is this normal when you have a 3.5db SNRM..? looking at DMT Tool stats its reporting about 15 CRC's for each 15 minute segment of last hour (60 per hour) and ive just turned the computer on?
cheers
With ATM (ADSLx), there are 'idle cells' transmitted all the time that the connection is up, whether or not there is a payload in the traffic at the network layer.
Each ATM cell has a 48 byte payload + 5 header bytes. The ATM cell counters are still running during idle. Those idle cells contain a predictable sequence of dummy data. That data (payload and header) is still error-checked/error-corrected.
So both the HEC header checksum error counter and the Reed Solomon payload error counters, correctable and not, are incremented where necessary.
cheers, a