thebel
join:2013-03-15
Lincoln, RI | [RI] Do I have splitter-itis? surfboard 6121 dropping out 247 Hello I have been having major internet connectivity problems for several weeks now. The internet was going out for a random amount of time, then when either I would call and do the automated restart of the modem it would sometimes kick back on, the uptime is random from hours-1day but the router always returns to "cycling" and unable to get a connection.
The cable line comes from the street into a splitter that goes to -3.5dB out on both ports
»i.imgur.com/fjt3aNQ.jpg
, the wire then goes downstairs(downstairs living area where the cable tv/modem/router are). Cox cable was called and they added a powered cable line amplifier
52-1000Mhz Fwd(+11dB) 5-42MHz Trn(-4dB) »i.imgur.com/768GFCQ.jpg
The cable then goes through one last splitter which is the problem pictured here
»i.imgur.com/7zDPSzF.jpg
When I bypass this last splitter the cable modem works immediately, so heres my question. I don't really know much about power levels, I'm not sure what type of splitter I should be using (dB) to solve this problem. I randomly found that the splitter was the problem this morning, after 2 service calls and changing out the modem and the router. Any help would be appreciated. Thanks! |
|
 CoxTech1VIP
join:2002-04-25
Chesapeake, VA
kudos:72 | Re: [RI] Do I have splitter-itis? surfboard 6121 dropping out 24 That's definitely a less than ideal setup for the modem. It's possible a technician could come out and find a better way to wire your setup. |
|
|
|
VentShop
join:2009-08-21
Oklahoma City, OK | reply to thebel
Never heard of a call in number to automatically restart, basically unplug the modem wait a minute or so and plug it back in.
The modem should have a diagnostics page located at »192.168.100.1/
That will give you some levels, the power should be as close to ZERO as possible and it is acceptable when between -10 and +10 depending on if the moedm is a docsis 3 of docsis 2/1.1 it may have more than one listing of power. Downstream signal to noise should be above 30
For example mine is:
Upstream power should be lower than 55 and if it references the upstream signal to noise it should be above 29.
After you go check that out you may want to see if the splitters are causing a problem or not, to do that go to where the splitter is and remove it, hook the modem up and hook a computer to it. Power everything up and see what your levels are. If they are out of range someone should be able to come out and fix the problem. If not it may be an issue with the cabling in your home for signal levels.
There may be other issues in the network causing internet dropouts but it sounds like something else is problematic to me. You can download pingplotter and leave it running for a while and see where the connection is dropping out at. |
|
| reply to thebel
Why does that last splitter have nothing on the input?
If it is normally wired like that picture shows then that is your problem. the splitter is wired backwards and should not be there. You need a F-81(A Barrel) |
|
