Line Phone Configuration?
Pedro675:
From some further research it appears a DSL splitter would work best and possibly give me better speeds - although I'm at only 8 mbs now. I could install the splitter at the NID then run separate wires to the router/modem. After the Obi adapter is installed there should be no cross interference.
Comments?
drgeoff:
Quote from: Pedro675 on March 08, 2018, 01:54:31 pm
From some further research it appears a DSL splitter would work best and possibly give me better speeds - although I'm at only 8 mbs now. I could install the splitter at the NID then run separate wires to the router/modem. After the Obi adapter is installed there should be no cross interference.
Comments?
My post just above was addressed solely to the situation when you have ceased phone service from the telco and want the PHONE jack on the OBi connected to all phones in the house.
I assume your proposal to put a splitter filter at the NID is for a preliminary phase when you still have phone service from the telco but want the DSL modem and the phones on separate pairs in the house. Yes, in that case it is preferable to have a splitter at the NID otherwise the DSL path has a stub within the house which can reduce the DSL speed. Once you do not have the two pairs commoned at the NID that filter is no longer necessary, but is (mostly) harmless.
There is a small possibility of crosstalk from the DSL signal between the pairs in the house wiring affecting the phones. That is why I suggest still putting filters at each phone or OBi, even when the phone service is via the OBi.
Almighty1:
Quote from: drgeoff on March 08, 2018, 12:47:44 pm
Quote from: Pedro675 on March 08, 2018, 11:24:03 am
So today I had the Telco technician come by to look at the NID outside the house. He gave me bad news. The wires from the Telco are OK but the in-house wiring is not CAT5, only four single stranded wires, two of which are used for the phone/DSL. I had asked him to come on the (false) premise that I was thinking about putting in a second line. He said that with single single stranded wire there is the good possibility of crosstalk across the wires as these are not twisted pairs. So my plan of using the Line 2 for DSL to the router (switch at box) and Line 1 inside from the Obi adapter to the other phones may not work.
Has anyone had this experience with their Obi and Goggle Voice? This is a two story house with only one cordless phone connected upstairs from a downstairs base. I could run CAT5 wires under the house from the crawl space and rewire the wall jacks I need to use. But not really do I want that work.
Thanks so far for the feedback, but would like some more on this issue.
I think the possibility of crosstalk causing an issue for your intended use is grossly exaggerated. (Yes it might be a problem if you wanted to use the 4 wires as two voice pairs - but you are not going to do that.)
Voice and DSL can coexist when on the same pair. So having them on different pairs should not be a problem. Put DSL splitter filters at every point where you connect a phone or OBi to the voice pair. (You won't have anything plugged in to the DSL port on those filters.)
You don't need a filter on the DSL pair. Your modem (or modem-router) can connect directly to it. But a filter there won't do harm so it if makes you sleep easier .....
I agree on what was said above.
From reading the forums here, I thought the OBi cannot connect to a phone line that is still live connected to the telco unless you want the Obi fried. DSL Splitters and DSL filters are two different animals as one filters all the voice lines at the NID while allowing all frequencies to the data side to the DSL Router/Modem while the other filters at each phone jack. The later is the non-preferred method as the DSL signal will actually go throughout all the house wiring. As far as ADSL is concerned, it depends what speed you are paying for as that last 50 ft or so of wiring is not going to make a difference for voice since it maybe CAT3 and it will work as you are not doing the 7,000 ft max for a data signal, this is only a voice signal and will work fine. I mean if both line 1 and 2 works fine now, it should work the same and not get any worse. Pots based DSL actually tops out at 6Mbps for AT&T which is ADSL2 DMT.
So what one really wants to do is really just disconnect that line 1 at the NID and then connect the Obi to the line 1 somewhere and all devices on line 1 will have the dial tone since the Obi requires Internet access which is what the DSL is for so obviously the DSL will be needed for it to work and please do correct me if I'm wrong about the Obi getting fried if connected to a live telephone circuit connected to the telco.
For phone wiring and more info including quality splitters, it's better to read this site:
http://www.homephonewiring.com/
GPz1100:
This may have been stated previously.
Why not just connect the dsl to line 2 at the nid. That is so the dsl signal travels on what is commonly known as line 2 in the 2 pair phone cord (black and yellow). Use a 2 conductor only cord to connect between the obi and the nearest wall jack to back feed the rest of the house. This will ensure you don't fry the obi with the dsl signal and isolate the dsl signal from line 1.
You'll next need to either use a converter of some sort or wire your own cable so that one end picks up line 2 at the wall, while the other ends converts it to line 1.
For your dsl modem, end going to the wall jack will have wires going to pin 1 and 4, while at the modem end will have those same wires to pin 2 and 3. Make sure to label the cord accordingly and only use it for the dsl connection.
-------------------
Amazon has this for connecting between the wall jack and obi.
https://www.amazon.com/Home-Mart-Telephone-adapter-plug/dp/B07796RH8Q
Or, since you'll need to do a custom cable, just get a crimper and some rj11 ends. Maybe something like this . https://www.amazon.com/UbiGear-Crimper-Connector-Network-Crimper315/dp/B008UY5WL0
I've used this tool for many years - https://www.homedepot.com/p/Ideal-Ratchet-Telemaster-Crimp-Tool-for-RJ-11-RJ-45-Modular-Plugs-30-696/100076104 .
Pedro675:
Thanks for the reply. Yes, that's the way I'll do it. Except now I will put a DSL splitter at the NID to eliminate filters and run a dedicated wire to my router/modem. That will leave the four wires in the house separated from the DSL. I talked to my telco service guy yesterday about a splitter and he said he would install one for free. Conversely I was going to buy one from Amazon for about $30.
This is coming together now. As a followup to earlier post my wife and I have been talking via Goggle Hangouts this week between Florida and home the quality is great, so I think GV will also be as good.
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