Broadband Speed - Cabinetisation vs Exchange

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RunningMan

8879 posts

Uber Geek

#743452 11-Jan-2013 18:06

The 6dB margin suggests you are on ULL gear, not Chorus, as theirs is 12dB.

I would have expected a slightly faster downstream sync speed for the 35dB attenuation though.

Given the Chorus SAT indicates you would be connected direct to the exchange (if on their gear), midspan injection is unlikely to be the issue.

What is the internal house wiring like?

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stonecolddy

14 posts

Geek

#743573 11-Jan-2013 20:57

The house wiring is not perfect I guess. The house was built in 70s and I was told by the previous owner that they have re-done the electrics for the house, but I'm not sure whether they touch the comms wiring.
Are you able to tell the external speed from the exchange to my house from the modem stats?

RunningMan

8879 posts

Uber Geek

#743577 11-Jan-2013 21:05

stonecolddy:
Are you able to tell the external speed from the exchange to my house from the modem stats?

Downstream Rate: 5437 kbps
Upstream Rate: 978 kbps

Note that those speeds are of course affected by any internal wiring.

Did you see what the Chorus technician did when they came around? You mentioned earlier they said you wouldn't get higher than 6Mb/s. If they have disconnected the line at the demarcation point, and tested there, then there is about a 10% difference which is almost certainly due to internal wiring.

chevrolux

4962 posts

Uber Geek
Inactive user

#743623 11-Jan-2013 22:58

At 35db you WILL get 10Mbps.

Even if there is an active cabinet between you and the exchange it shouldnt matter UNLESS your line is still wired through a port in that cabinet - this should not be the case if the provisioning of your line was done correctly. However, because you have a port from the exchange it should just be jumpered directly from e to d side and midspan injection is not an issue as it is just like a jumper in a normal cross connect cabinet.

gareth41

738 posts

Ultimate Geek

#743689 12-Jan-2013 10:18

well heres what I get, and theres a cabinet 500m up the road, prior to the cabinet I was on the henderson exchange and getting around 2 - 3 mbits. Im on ufb now so the dsl connection is going soon.

Line Mode        ADSL2+     Line State    Show Time
Line Power State    L0         Line Up Time    00:17:51:00
Line Coding        Trellis On     Line Up Count    3

Statistics        Downstream    Upstream
Line Rate        12863 Kbps    1176 Kbps
Attainable Line Rate    15640 Kbps    1232 Kbps
Noise Margin        11.9 dB    12.4 dB
Line Attenuation    11.5 dB    5.8 dB
Output Power        0.0 dBm    12.8 dBm

coffeebaron

6197 posts

Uber Geek

Trusted

Lifetime subscriber

#743716 12-Jan-2013 11:21

stonecolddy: Below is my modem stats, my modem model is Linksys WAG200G. Is the stats normal?

DSL Status: Connected
DSL Modulation Mode: ADSL2+
DSL Path Mode: Interleaved
Downstream Rate: 5437 kbps
Upstream Rate: 978 kbps
Downstream Margin: 6 db
Upstream Margin: 6 db
Downstream Line Attenuation: 35 db
Upstream Line Attenuation: 9 db
Downstream Transmit Power: 11 db
Upstream Transmit Power: 21 db

PVC Connection
Encapsulation: RFC 2364 PPPoA
Multiplexing: VC
Qos: UBR
Pcr Rate: 0
Scr Rate: 0
Autodetect: Enable
VPI: 0
VCI: 100
Enable: Yes
PVC Status: Up

I'd say closer to 10Mbps is possible, flick me an email / PM if you would like a master splitter installed.
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stonecolddy

14 posts

Geek

#748824 22-Jan-2013 14:27

Just a quick update on this topic as a conclusion to my story.

I had coffeebaron came the other day and installed a master splitter, thank you for your work!

Unfortunately, the end result was only marginally better. The download speed has increased from 4.8Mbps to 5.3Mbps. So I guess it's really a distance issue to the exchange.

The other thing that really bugs me is that my house is two houses outside the VDSL boundary. So I guess I'll have to wait for the UFB to come in place, which according to Chorus, will be installed June 2014.... year and half two go..

gareth41

738 posts

Ultimate Geek

#748939 22-Jan-2013 15:59

stonecolddy: Just a quick update on this topic as a conclusion to my story.

I had coffeebaron came the other day and installed a master splitter, thank you for your work!

Unfortunately, the end result was only marginally better. The download speed has increased from 4.8Mbps to 5.3Mbps. So I guess it's really a distance issue to the exchange.

The other thing that really bugs me is that my house is two houses outside the VDSL boundary. So I guess I'll have to wait for the UFB to come in place, which according to Chorus, will be installed June 2014.... year and half two go..

I would be approaching someone inside the VDSL boundary and offering to pay for their internet connection, then just get a pair of ubiquity m5's, one on their roof, one on yours and bridge the two.

chevrolux

4962 posts

Uber Geek
Inactive user

#748973 22-Jan-2013 16:37

Something is a miss here. I have seen plenty of examples of connections with 30-ish dB getting 10Mbps.

Now that the internal wiring is sorted call your service company and get the line checked out. It is either an imbalanced pair or there are multiples coming off it which need to be removed.

coffeebaron

6197 posts

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#748979 22-Jan-2013 16:42

I suspect a poor grade cable feeding the street; worth checking the neighbours though to confirm if speed is similar. I have seen both instances where this is a good as it will get Vs some where there is an actual fault.

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stonecolddy

14 posts

Geek

#749420 23-Jan-2013 11:29

Thanks guys, I'm with vodafone, What requests should I put through to most effectively force them to check the line?
I have had a chorus guy came prior to this post actually (sent by vodafone), and he just simply checked the speed and said that's the maximum speed I can get due to distant from exchange.

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