How to Jumper cable @ Chorus Mushroom

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Zeon

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#98032 23-Feb-2012 15:14

Hey guys,
I'm helping out someone who wants to get VDSL2 on another line seperate to their current line. They wanted to do this as they can't have any downtime and also since their number is POTS, they don't want to lose it (we are porting to VOIP after this).

So we ordered it and apparently there is only a single cable pair to the house from the mushroom outside and the Chorus tech didn't want to install another pair to the house (he was pretty useless, couldn't even confirm if it was ducted).

So I've asked him to clearly label the current pair at the mushroom, the new pair at the mushroom and the pair from the house. He has also left a few of the grease filled connectors. I'll go and rejumper tomorrow to minimize downtime but the question I have is how do I actually use those clear grease filled jumpers? Like do I have to strip the cable first and then use pliers or something to crimp it on?

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cyril7

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#585752 23-Feb-2012 15:24

Hi, odd that there is only a single pair, or is the 2nd pair shared with another party. If it is only a single pair then its most likely trurip so your VDSL will probably stop in its tracks.

As for Scotch locs, you dont strip anything, simply straighten enough of each wire (approx 10mm) so that each wire sits straight in the loc, push each wire into the loc till its fully home, then using the right tool or a flat pair of pliers press the loc home, if you have the right tool it will close it to the correct amount, if using pliers press it hard home but only with enough force to close it, press to hard and you will destroy it.

Also depending on what locs he left if they have a coloured side then its best to turn it over while inserting the wires so you can see they are fully home.

Cyril

Zeon

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#585759 23-Feb-2012 15:32

cyril7: Hi, odd that there is only a single pair, or is the 2nd pair shared with another party. If it is only a single pair then its most likely trurip so your VDSL will probably stop in its tracks.

As for Scotch locs, you dont strip anything, simply straighten enough of each wire (approx 10mm) so that each wire sits straight in the loc, push each wire into the loc till its fully home, then using the right tool or a flat pair of pliers press the loc home, if you have the right tool it will close it to the correct amount, if using pliers press it hard home but only with enough force to close it, press to hard and you will destroy it.

Also depending on what locs he left if they have a coloured side then its best to turn it over while inserting the wires so you can see they are fully home.

Cyril

Hi Cyril,
Thanks for the info. Nope it's not shared with another party so I myself am surprised its only a single pair. The house was built in the 1970s so do you think it will be Trurip cable? Basically its a house right on the edge of town (about 200m from the cabinet) but it is semi rural almost.

The current DSL syncs at about 20mbps and I think only a few dB of attenuation so I think it should be OK? Apparently the pre qualification check came back with almost perfect figures.

Thanks for the info on the connectors! I'll take some pliers!

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cyril7

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#585761 23-Feb-2012 15:36

Hi, flat nose pliers are best, infact you probably can sqeeze the body closed with your fingers, then nip them with the pliers that will stop the loc from skewing so much as it closes, otherwise the corrrect tool is not much $20-30.

Cyril

antoniosk

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#585787 23-Feb-2012 16:13

Zeon:
cyril7: Hi, odd that there is only a single pair, or is the 2nd pair shared with another party. If it is only a single pair then its most likely trurip so your VDSL will probably stop in its tracks.

As for Scotch locs, you dont strip anything, simply straighten enough of each wire (approx 10mm) so that each wire sits straight in the loc, push each wire into the loc till its fully home, then using the right tool or a flat pair of pliers press the loc home, if you have the right tool it will close it to the correct amount, if using pliers press it hard home but only with enough force to close it, press to hard and you will destroy it.

Also depending on what locs he left if they have a coloured side then its best to turn it over while inserting the wires so you can see they are fully home.

Cyril

Hi Cyril,
Thanks for the info. Nope it's not shared with another party so I myself am surprised its only a single pair. The house was built in the 1970s so do you think it will be Trurip cable? Basically its a house right on the edge of town (about 200m from the cabinet) but it is semi rural almost.

The current DSL syncs at about 20mbps and I think only a few dB of attenuation so I think it should be OK? Apparently the pre qualification check came back with almost perfect figures.

Thanks for the info on the connectors! I'll take some pliers!

I'm in central wellington, and only have a single pair from the CTP to my house. It's not as uncommon as you might think.

Then again, given the wind today in Wellington, perhaps the other pair was blown away....

A

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cyril7

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#585791 23-Feb-2012 16:16

Hi, but that would be the old original telecom one, I would suggest the phone pair you are currnently utilising and attached to your HFC cable is 2pair.

Whilst old single pair Trurip is not uncommon its a death nail to DSL services, the sooner it fails so you can replace it the better.

Cyril

kiwitrc

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#585800 23-Feb-2012 16:36

Wise move trying to do it so you dont lose the net. We moved to VDSL, yesterday the tech did the jumpering at the exchange, today we find out Chorus are so far behind that it will take 24 to 48 hours for the provisioning guys to do the rest. So our company has no internet for that time.

insane

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#585862 23-Feb-2012 18:05

Make sure you have at least 6 of those little snap connectors, in case you have to roll back and try again another day :)

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Zeon

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#585868 23-Feb-2012 18:15

insane: Make sure you have at least 6 of those little snap connectors, in case you have to roll back and try again another day :)

haha yea I was just thinking that. Based on the retardedness of the technician (and the fact he answered his cell while on call to me leaving me waiting) I highly doubt it. If need be can that wire be punched down onto a block ie the type you get on the back of a phone plate or should I strip it and tie together then tell Chorus to come fix it?

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chevrolux

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#585914 23-Feb-2012 19:11

if you were unlucky enough to get the retard technician it would be worth getting a shovel and just have a light dig around the bottom of the DP (mushroom or whatever) and have a look for a pipe. Be careful though as you dont want to put it through a direct buried cable lol. It might not be a green 20mm pipe but it could be the older 1/2" pipe which is white/grey. It is still possible to pull a new cable through that if you really want to get the second line in. Or just get a torch and have a look down the barrel. Only problem is they didnt always bring the pipe up in to the DP.

As for mucking around with pairs in the DP. Just leave it unless you have some crimps. Chorus will happily charge a fee for coming out to fix stuff. They arent very expensive to buy. Get a pot of them and they will last you for years!

antoniosk

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#585948 23-Feb-2012 20:23

cyril7: Hi, but that would be the old original telecom one, I would suggest the phone pair you are currnently utilising and attached to your HFC cable is 2pair.

Whilst old single pair Trurip is not uncommon its a death nail to DSL services, the sooner it fails so you can replace it the better.

Cyril

On TCL Cable, you are correct - everyone gets 2 copper pairs.

Too bad if I want DSL at my place though - I can only reconnect the antiquated NZ Post line, which is pointless (I only ever got 3.2mbps down and 200kbps up when I used it for DSL - and I'm 258 metres as the wire is laid from my local exchange

)

So yes I agree - bring on the wind, rain and possums to bring down the line and replace it with one from the 90's..... because fibre won't be going down this suburb till about 2016.

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Antoniosk

Zeon

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#589674 3-Mar-2012 08:26

So the single pair came up into the Mushroom built into the black moulded sheathing that the dozens of other cables came into. The chorus tech identified the VDSL2 and the phone line and he left some connectors. I switched them across using the method outlined above with pliers. Worked flawlessly, piss simple and VDSL syncing at 45mbps/10mbps so success!

Would recommend this approach to anyone else in this situation.

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shadybrothers

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#589783 3-Mar-2012 11:40

Is it best practice to remove the VDSL2 splitter when moving to a Naked VDSL service?

this is a slap in the face!

cyril7

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#589803 3-Mar-2012 12:14

Hi according to testing done by Chorus in their test environment, yes there is an small advantage in using a filter, I suspect it adds a bit of lumped inductance to the line which assists slightly with equalisation, but I cannot really say the exact detail of their reasoning.

I think what was clearly established is that the presence of a filter does not impact on the VDSL2 performance in any tangible and detrimental manner, yet if present means no truck roll is required if a new house owner changes to a non naked plan in which case the filter would need to be reinstated.

Cheers
Cyril

shadybrothers

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#589824 3-Mar-2012 12:57

Excellent, thanks again Cyril

this is a slap in the face!

sbiddle

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#589860 3-Mar-2012 14:59

The following makes interesting reading for those who want to understand the impact of internal wiring on DSL, whether you're running it with POTS and have 48V or running a naked/dry DSL connection. There are plenty of people who try and argue the point with me (example here) but the reality IMHO is that every line in the country that has DSL on it should have a master DSL filter installed UNLESS it's a modem on a single jackpoint wired directly to the MDF or demarc. If you have muliple jackpoints your DSL is being impacted by internal wiring, regardless of whether you're using plug in filters and/or jave a POTS service enabled.

http://www.comtestnetworks.com/whitepapers/CNI%20-%20Home%20Wiring%20and%20DRY%20DSL.pdf