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[burakkucat]

So that's an eventual good result after a bad experience! 

[npr]

Anyone know if the disable upstream power back off (upbo) feature on this router actual works.

Since my ECI cabinet had it's firmware changed from  0xb206 to 0xd086 my upstream sync has rarely been above 0.5Mbps, I'm getting that desperate now I'm considering trying a Asus router.

For info:

xdslctl info --pbParams
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 604 Kbps, Downstream rate = 30258 Kbps
Bearer: 0, Upstream rate = 519 Kbps, Downstream rate = 25379 Kbps

Discovery Phase (Initial) Band Plan
US: (6,31) (882,1193) (1984,2770)
DS: (33,857) (1218,1959) (2795,4083)
Medley Phase (Final) Band Plan
US: (6,31) (882,995)
DS: (41,857) (1218,1535)
                  VDSL Port Details               Upstream                Downstream
Attainable Net Data Rate:             604 kbps              30258 kbps
Actual Aggregate Tx Power:             3.6 dBm               11.9 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   12.4   62.3   61.7   N/A   N/A   25.2   77.2   90.3
Signal Attenuation(dB):   12.2   59.4   N/A   N/A   N/A   32.6   79.2   N/A
        SNR Margin(dB):   7.7   5.9   N/A   N/A   N/A   5.9   6.1   N/A
         TX Power(dBm):   0.9   0.2   N/A   N/A   N/A   11.3   3.2   N/A

[ejs]

Have you tried a modem containing a Lantiq chipset recently, e.g. an ECI modem running OpenWRT? Or even a BT HomeHub 5A / Plusnet Hub One?

[npr]

Yes, tried a HH5A -- no change in upstream but downstream dropped from 25Mbps to 16Mbps.

I have got a ECI modem running openWTR, not tried it since this problem started but I'll give it a go next week. Do you know if it has a cli command to adjust upstream power?

So far BT support have been useless, I've even made a formal complaint which is going nowhere. I'm now waiting for the 8 weeks before I can progress it to OFCOM (or whoever it is these days).

[ejs]

I don't think anything else has any commands to adjust upstream power, I did look into a lot of low level commands that involve typing in a bunch of numbers. I have just spotted a Lantiq thing that should make it theoretically possible to enable/disable AELEM, if anyone can work out the exact numbers to plug in.

[j0hn]

Anyone know if the disable upstream power back off (upbo) feature on this router actual works.:

it made absolutely no difference to my upstream sync. 6.8mb off/default/on.

[gt94sss2]

Anyone know if the disable upstream power back off (upbo) feature on this router actual works.

You should always ensure that upbo is enabled - any other setting can interfere with your FTTC connection and those of your neighbours.




 

[Bully]

So that's an eventual good result after a bad experience! 

Yeah it was a result.

And I managed to pick up a Netgear D7800 nighthawk off eBay to replace the Asus.  I'm on an ECI cabinet and the Netgear has a lantiq dsl chipset to match the cabinet.

[burakkucat]

. . . I managed to pick up a Netgear D7800 nighthawk off eBay to replace the Asus.  I'm on an ECI cabinet and the Netgear has a lantiq dsl chipset to match the cabinet.

Perhaps you might like to document your experience with the D7800, in due course?

[npr]

@ejs

A google search indicates the Lantiq chipset may well have settings to adjust the upbo, but I've found nothing to indicate the actual cli commands.

Time to get the ECI modem from the back of the cupboard and start playing

@gt94sss2

AFAIK upbo is intended for use on short loops to reduce crosstalk from them interfering with the signal coming from more distant subscribers. I'm on the end of 1 Km of mixed copper and aluminium, I doubt a strong upbo settings  is intended for this type of line.


I've notice in "My BT" that BT have now marked this fault as complete! 

Still getting the same 0.5Mbps upstream sync on my VDSL connection. How on earth do you contact anyone at BT support with the slightest knowledge of how VDSL works or who has any interest in trying to help paying customers.

[ejs]

This tends to be the kind of thing for which I find nothing useful from Google. The only obvious UPBO related command is g997upbosg / G997_UsPowerBackOffStatusGet - any "status get" commands are information retrieval, read-only commands.

[thesmileyone]

Anyone know how to bypass the router part of the DSL-AC68u and make it work with an ECI modem?

I have the modem and the Asus here, when I tried running WAN through Ethernet it didn't work at all.

Also do I need to login to the ECI somehow to enter the connection details or do I do that through the router? DSL light comes on etc but being just a router it never asks for user/pass etc.

[skyeci]

the modem is just a modem. You can't login in to the eci modem unless you unlock it hardware wise which is not straight forward. If you are on vdsl service the eci modem should just work as a modem with no extra settings. You would need to connect a router to port 1 and configure the wan port for your ISP. I am not sure if the DSL version can be made to work in router only mode. Ideally you could just use a RT-AC68U if you were able to swap it and connect that to the ECI modem.

Who is your ISP as you will need to set the wan port with the right settings. I am sure someone will comment if the DSL version can be made to run in router only mode.

[michty_me]

You can easily set the DSL version to run as router only and have a seperate modem. Off the top of my head, I cannot remember as it has been so long since I last used it.

[andyfitter]

I used to use my DSL-AC68U with an HG612 when I realised how rubbish the internal modem is, so it definitely can be done.