im not sure if it will work between the vdsl faceplate and modem, can the powerline adaptors deal with a DC circuit?

What DC circuit?

I did say, (you may not have noticed), that my suggestion rests on the output from the VDSL2 socket being ethernet, ie PPPoE. So may be able to traverse the HomePlug setup in the same way as it would traverse the data extension kit.

If there is a DC output as well from the VDSL2 socket, what is that for?

Would you agree the worst case scenario is that it just doesn't work?

I'd be prepared to give it a try - the only problem is that the Homeplug takes an RJ45 and the master socket takes a standard BT phone jack if I'm not mistaken, so presumably I would need an adapter cable to do this?

The VDSL faceplate takes either RJ11 or RJ45, so you could try an RJ45 from the filter to the home plug. I reckon this won't work, or if it does, will cripple the sync rate.

I'll give it a go tonight and see if it works. Doesn't worry me if it doesn't, since I now have a big mess of cables in the study instead of the hall.

If the study is on the first floor, it should be on a different power ring - that could be a problem. And even on the same floor, rooms can have separate power rings.

Seem to come across this misconception quite a lot.

Home plugs will communicate when connected to any number of different circuits within the property. That's what they were designed to do. The consumer unit (fusebox) acts as the bridge. There are possible implications if there is more than one consumer unit in the property, but even then it only effects the speed. There are probably devices that prevent transmission, but they are unlikely to be found in a domestic or small business scenario.

Trawling google however, there seems to be a lot of misinformation on the web.

.

So, explain why they will not work when connected on an extenszion lead?

Or, why they will not work if I connect one to the ring serving my comms room - server, router, switch, &c and the other to teh ring serving my office?

In reply to a post by MHC:

So, explain why they will not work when connected on an extenszion lead?

Maybe the extension lead has a built-in HF filter? That'll stop 'em.

Until I had a re-arrange recently I was using 3 Homeplugs- 2 downstairs, both plugged in to 4-way 2-metre extensions, the third upstairs on a different ring main. Worked fine.

Edited by billford (Thu 12-May-11 21:26:55)

As Bill says I think filters can be a problem. I have read about people blaming UPS's aswell.

That's why they state on the same consumer unit. Any type of metering/ups/filtering that is on the main supply can effect the signal. Say for example you have a small consumer unit for your comms room with a built in UPS or voltage smoothing device (becoming more and more common now) on the sub distribution cable to it. It will work anywhere in front of that device but won't pass through to get to another consumer unit. That's why I said it is usually ok in a domestic or small office environment, because mostly they have one consumer unit and they don't employ these other techniques.

I can't confirm which devices do or don't block signal, its just what I have read. But if you ring the manufacturer they will tell you what might be the cause. Bear in mind of course there are different specs and quality of homeplugs with different standards, that could have an impact as well. You have to match them all for them to talk to each other.

Edit: Forgot to mention if you have a three phase supply MHC, then consumer units are normally spread over the different phases to balance the load. That would be the most obvious reason for them not to be able to communicate?

.

Edited by mrnelster (Fri 13-May-11 07:02:19)

Its a genuine question as I don't know the answer but isn't the face plate just putting out the VDSL modulated digital signal still with its carrier frequencies for the modem to strip out? I know that powerline adapters can carry various types of digital signals but I was not aware they could transmit high frequency analogue signals as well as don't the adapters use a similar modulation system wouldn't this interfere? The modulated signal will go down a Cat 6 cable of course just as they go down a telephone line.