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407 posts

Ultimate Geek
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Topic # 26441 22-Sep-2008 22:50
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Hi guys,

Just got the MM3200B today, planning to install this onto the line that xnet comes in on.

I am slightly confused by the filter. Does the phone line come into a jack with the adsl modem plugged into it then plug into the filter which then plugs into the phones in the rest of the house?

Is this image how I should have it? (Dont you just love paint Tongue out)







HELP EXTREEMELY APPRECIATED! =]

Cheers
Chris




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  Reply # 166431 23-Sep-2008 06:21
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You need to install the splitter before the first master socket. If you have no knowledge of phone wiring this is something you really should pay to get done - while it's a simple process if you know how you can easily much it up if you don't understand how it works.

If you want this to be a DIY job you'll also need some scotchlok connecotrs (which you can buy from an electrical wholesaler such as Corys/Mastertrade). Hopefully the first master jack in your house will have the blue and white wires used, somewhere before this this but AFTER the demarcation point you need to cut the cable and install the splitter (typically in the roof).

How is your house wires - with the phones in series or parallel? I'm taking the assumption that they are wired in series (all looped from one socket to the next) which is the most common but also the worst method when it comes to ensuring speeds aren't affected by dodgy wiring. If they are wired in parallel they will all run back to a central point.

The blue+white pair incoming cable runs into the splitter connects to the input on the splitter. The blue + white pair of the cable running to the first jackpoint now connects to the voice output of the splittter. You now either need to run a new cable from the ADSL output of the splitter to a new jackpoint next to your modem.

If the modem is next to the 1st jackpoint you can use the other pair if it's 2 pair phone cable or if it's cat5e cabling use the orange pair. Now where this cable comes out of the wall put a new jackpoint and wire the 2nd pair to this. This will now be your ADSL jackpoint and the existing one will be for voice.

If your modem is not next to the first jackpoint you can join the wires of the 2nd pair inside each socket with scotchlok connectors but this is not recommended - running new cable is the preferred option.



407 posts

Ultimate Geek
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  Reply # 166436 23-Sep-2008 07:34
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Not worried out cutting cables.. I have installed a few jacks in our house no probs.

Was also able to get some of them connectors when the chorus guys were continually around fixing our cable from the street.

Anyway, you didnt say where abouts the modem sits?

On the connector I have or/wh to LINE and DATA wiring
bl/wh to PHONE wiring

I am assuming that or/wh connects to the existing blue/wh pair of the telecom line and bl/wh connects to the rest of the house?

Where does the modem sit? on a jackpoint before the splitter?

And yes our house is in series... Quite annoyed and way to hard to run new cable

Cheers
Chris

 
 
 
 


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  Reply # 166438 23-Sep-2008 07:49
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Orange / white goes to line in, and a socket for the adsl modem.

Blue white goes to all other phone sockets in house (they are no longer connected to the line in, just the output of the splitter).

From memory.

So - your paint diagram is actually not too bad...

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  Reply # 166441 23-Sep-2008 08:03
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You need to run two cable runs from the splitter or use two pairs of an existing cable. The blue/white from the splitter is joined to the blue/white pair for your normal phoneline. The incoming phoneline from the demarcation point is connected to the splitter and orange/white pair becomes your ADSL line and needs to be run to a new jackpoint somewhere in the house which you plug your modem into.


You can either do this by running new cable from the master splitter to a jackpoing that will be used solely for ADSL and should be maked as such.

You can do this one of two ways - install a new jackpoint next to an existing one or dedicate an existing jackpoint solely for ADSL.

If you want to use an existing jackpoint you will need to remove the blue/white pair from the back and use the orange/white pair and join the blue/white pair with scotchlok connectors. You will also need to join the orange/white pair with scotchlok connectors at every jackpoint in series before the one you modify. If you want to put a new jackpoint next to it for ADSL you just need to join the orange/white pair to the new jackpoint. Whatever method you use ensure that you label the jackpoint as ADSL only.

While the method above will work it's not recommended. If you start joining cables behind each jackpoint with scotchlok connectors you will almost certainly cause ADSL speed issues. You might get away with one or two joins but it's certainly not without risk. The preferred option is to run a new cable run directly from the master splitter directly to the jackpoint that will be used for the modem but I realise this is not always easily done.

I just wish somebody in this country would teach the average electrician that wiring phone jacks in series is a big no no. Most can't seem to get it through their heads that looping wires works for power but not data! Electrical regulations are updated all the time and they have to learn new things - why do they persist in failing to upskill themselves when it comes to data/telephony?




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Ultimate Geek
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  Reply # 166495 23-Sep-2008 12:29
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Will my auntie's house has just been finished building and the person who did all the wiring and the home theatre did a REALLY good job. Everything comes back to a patch panel. They have a home theatre with two sky decoders to get record and play at the same time and all the video sound and infrared. Really well done.

Just wish our house was new and had cat5e in it. Never mind.

Thanks for all your help guys

Cheers
Chris



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Ultimate Geek
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  Reply # 166623 23-Sep-2008 20:45
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All installed now.. Was nerve racking doing it though! Cutting perfectly good wires didnt sound like a good idea HAHA

I have only got a small speed increase of about 1500kbps. I know the line is capable of 7500 as this is what my other modem achieves on xtra on the other line.

It is connecting to ADSL2+ but not the speeds I was expecting. Here is a page from my router (just so someone can tell me about line attenuation etc)


ADSL status shows the ADSL physical layer status.
 
ADSL Firmware Version:     7.03.01.00 - 7.03.01.00 - 7.03.01.00 Annex A - 01.07.2c - 0.54
ADSL Software Version:     V3.02B01T01.NZ.20071119
Line State     Connected
Modulation     ADSL_2plus
Annex Mode     Annex A
Max Tx Power     -38 dBm/Hz
 
Item              Downstream  Upstream    Unit
SNR Margin             12          13          dB
Line Attenuation   26          12          dB
Data Rate               6267     944        kbps




Can I get any faster? I installed the master filter exactly as explained.

Cheers
Chris

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