Thread: ADSL noise margins?
View Single Post
Old 14-11-2007, 15:02   #2
pedantic
Inactive
 
Join Date: Mar 2004
Location: Swinton
Services: O2 standard
Posts: 2,499
pedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronze
pedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronzepedantic is cast in bronze
Send a message via Yahoo to pedantic
Re: ADSL noise margins?
Information taken from here suggests a SNR of 8db should be ok.

Quote:
SNR /SNR Margin

The Signal to Noise Ratio on the max product is more flexible than on traditional adsl. On the older fixed line speed products an SNR Margin of less than 6dB suggested that there was a problem with the line.

With Max a target SNR margin is set on the DSLAM and its your router and the DSLAM that agree the best way of meeting this target margin. The target margin range is between 3dB and 15dB and rises in 3dB increments - although it is normal for it to fluctuate either side during the training period. The default is 6dB without interleaving.
Mine is at 10db, and I sync at 8128.
pedantic is offline   Reply With Quote