borredo
Premium
join:2004-03-29
Allentown, PA
 ·RCN CABLE
·Service Electric B..
| Re: Need to switch between Interleave and FastPath? here's a guideline on line stat reading...To sum it up the first and most important issue when going for fast path is your line stats. When I called for the switch it was the first thing that I mentioned, my line stats justified being switched, it got my foot in the door.
'SN Margin (AKA Signal to Noise Margin or Signal to Noise Ratio)
Relative strength of the DSL signal to Noise ratio. 6dB is the lowest dB manufactures specify for modem to be able to synch. In some instances interleaving can help raise the noise margin to an acceptable level. The higher the number the better for this measurement.
6dB or below is bad and will experience no synch or intermittent synch problems
7dB-10dB is fair but does not leave much room for variances in conditions
11dB-20dB is good with no synch problems
20dB-28dB is excellent
29dB or above is outstanding
Line Attenuation
Measure of how much the signal has degraded between the DSLAM and the modem. Maximum signal loss recommendation is usually about 60dB. The lower the dB the better for this measurement.
20dB and below is outstanding
20dB-30dB is excellent
30dB-40dB is very good
40dB-50dB is good
50dB-60dB is poor and may experience connectivity issues
60dB or above is bad and will experience connectivity issues
"
My line stats....
Transceiver Revision: 7.1.254
Vendor ID Code: 4
Line Mode: G.DMT-Mode
Data Path: Fast
Transceiver Information Down Stream Path Up Stream Path
DSL Speed (Kbits/Sec) 3360 864
Margin (db) 19.0 12.0
Line Attenuation (db) 25.5 18.5
Transmit Power (db/Hz) 6.0 11.0
note: My noise margins were a couple points higher on interleaved. But I feel well into their parameters. |
