weedahoe
join:2003-09-14
Duluth, GA
 ·AT&T Southeast
| reply to Agent Simmons
Re: filters
said by Agent Simmons :
filters drop signal by 20db per hop (or connection) don't don't connect more filters unless you have to prevent noise on your phone lines... check your advanced diagnostics to make sure your signal to noise ratio is about 50% to 100%... if it isn't, call Tech support, have them get their suporvisor and then ask for DSG to try a noise test profile... it wont fix anything but it may tell you weather or not EMI/RFI is to blame
20dB per connection huh? So basically those people with 4-6 phones on more are have 80-120dB loss right? Well, here are my line stats from the Management and Diagnostic Console in my 2wire..........
Current Rate: 3552 kbs 384 kbs
Max Rate: 4480 kbs 956 kbs
Current Connection:
Current Noise Margin 13.0 dB 18.0 dB
Current Attenuation 50.0 dB 31.0 dB
Current Output Power 4.4 dB 1.8 dB
So here is what it tells me, my noise margins are my signal strength. The higher it is the better it is. Kinda like signal bars on a cell phone. The higher the bars are on a cell phone the less battery it uses to push/recieve the signal. So the higher my noise margins are means the more consistant and stable my connection is as well as ensuring I will get speeds relative to my provisioning, in this case 3552*384 which I usually lock on at about 2.8-2.9 down with 330-350 up.
This person who started the thread sounds smart enough not to believe that each filter connected in the home will "drop signal by 20db per hop (or connection)"
Being a math and engineering student with strong electrical and mechanical background, my common sense tells me this isnt even correct. I could post the before and after tests results using an O-score and Fluke DMM on my line at home but just believe me when and take my word for it when I say that isnt it.
I am not doubting a physical issue. Whether it is inside wiring or wiring outside there is no way of knowing as there isnt enough info to go off of. The thread starter doesnt even say how much on the downside his Westell is reporting as a loss. He does say he is getting 1.2 out of 1.5 which sound NORMAL to me. You are not going to get 1.5 with that provisioning of 1.5*256. I would say 1.1 - 1.3 is normal. But maybe he/she will post more info to off of. |
