| reply to ddawson
Re: Not synching at full speedYah, your downstream attenuation is tanking..... and the upstream SNR is not good either.
Noise Margin (AKA Signal to Noise Margin or Signal to Noise Ratio)
Relative strength of the DSL signal to Noise ratio. The higher the number the better for this measurement. In some instances interleaving can help raise the noise margin to an acceptable level.
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 little or 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. This is largely a function of the distance from the exchange. 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
Call them and ask how you are supposed to test the line when you don't have a NID and see what they say. When I worked there we were required to place a NID outside when we encountered an inside protector. They still should do so nowadays, but I can't guarantee that policy still exists. And yes the ideal place for the NID is by the power ground....... but stuff happens. I would like to assume the existing protector is grounded.... AND it is best for the company when the NID is outside of a building.
NOW, you could get a surface mount jack cover with wire leads and attach that to the protector if you want. Just be sure and disconnect the inside wiring so the jack cover is just hooked to the drop.
As far as the 'I/F' thing..... I never did find out what that meant either..... |
