Join us in Wellington 4th December and Auckland 27th November
Want to help us test an ads-free Geekzone? Register for webpass now

Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

16 posts


Topic # 136549 1-Dec-2013 09:45 Send private message

Hi All,

I'm looking for suggestions on improving my VDSL performance. First a little background info and detail...

- Connected to Full Flavour using INNBOX V50U (naked)
- Less than 100m from cabinet

The connection was originally stood up 3-4 months ago. Due to a mix-up with the original order it was logged as connection only so no wiring changes were made at the house. This includes running the modem through the original (in-wall) adsl splitter installed by Telecom around 10 years ago. During the initial bed-in phase I was happily getting speeds of close to 50MB/s. The only problem was that my original connection was in a closet in the main bedroom. Now that the phone needed to be tethered to the modem it was a less than ideal situation.

Some bodgy diy ensued which allowed me to connect the modem to the original phone jack point in the living area but also dropped overall speeds to around the 12-20MB/s mark. I've since had Chorus in about 2 weeks ago to clean up my mess and install a proper VDSL splitter at the point of entry into the house. The current wiring situation is a VDSL splitter at point of entry, one VDSL socket in the living room (guessing 10 - 15 metre cable run) plus an unused phone socket directly above in case I ever decide to go back to standard POTS for the phone.

After all this I'm still getting around 12-20MB/s down and, pretty consistently, 6MB/s up. I'm hoping that this is due to the amount of time that it will take for VDSL to do it's thing and tune my connection back up to the speeds I originally enjoyed. In the interim, I've posted the stats from the innbox router for comment. Basically, is it just a waiting game now, or should I still be concerned? The good news is that I already know what speeds I should be able to expect. I just need to understand now what the next steps are to getting back there again. Also, is it possible to Chorus to reset the handshake period to speed up the profiling?

Snapshot from the router as below...

Statistics -- xDSL

    Mode: VDSL2 Traffic Type: PTM Status: Up Link Power State: L0     Downstream Upstream Line Coding(Trellis): On On SNR Margin (0.1 dB): 109 108 Attenuation (0.1 dB): 0 0 Output Power (0.1 dBm): 130 -68 Attainable Rate (Kbps): 18844 6896     Path 0   Path 1     Downstream Upstream Downstream Upstream Rate (Kbps): 20439 7323 0 0   B (# of bytes in Mux Data Frame): 243 235 0 0 M (# of Mux Data Frames in an RS codeword): 1 1 0 0 T (# of Mux Data Frames in an OH sub-frame): 58 3 0 0 R (# of redundancy bytes in the RS codeword): 10 14 0 0 S (# of data symbols over which the RS code word spans): 0.3797 1.0244 0.0000 0.0000 L (# of bits transmitted in each data symbol): 5352 1968 0 0 D (interleaver depth): 85 217 0 0 I (interleaver block size in bytes): 254 36 0 0 N (RS codeword size): 254 252 0 0 Delay (msec): 8 8 0 0 INP (DMT symbol): 0.50 0.50 0.00 0.00   OH Frames: 1178517 378718 0 0 OH Frame Errors: 73130 127 0 0 RS Words: 3557615 1323635 0 0 RS Correctable Errors: 66161 17124 0 0 RS Uncorrectable Errors: 47851 0 0 0   HEC Errors: 626193 0 0 0 OCD Errors: 1215 0 0 0 LCD Errors: 1215 0 0 0 Total Cells: 13336760 0 0 0 Data Cells: 593182 0 0 0 Bit Errors: 0 0 0 0   Total ES: 1245 66 Total SES: 472 1 Total UAS: 228 228

View this topic in a long page with up to 500 replies per page Create new topic

This is a filtered page: currently showing replies marked as answers. Click here to see full discussion.

16 posts


  Reply # 944629 3-Dec-2013 11:31 Send private message

Hi All,

Thought I'd share the following from INNBOX support...

  Yes that is correct, you won't see the attenuation in the web ui, however you can get the stats of the CLI prompt.  telnet or ssh into the Innbox and run the following command, you will get your stats reading, your Attenuation will be after U1 and just before U2.  xdslctl info --pbParams

Keywords: innbox, v50u, attenuation, ssh 

View this topic in a long page with up to 500 replies per page Create new topic

Twitter & Pushbullet »
Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

Follow us to receive updates on your mobile device or browser via Pushbullet:

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.