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Good RJ11 telephone cable?

artfulbodger
Rising Star
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Registered: ‎16-01-2015

Good RJ11 telephone cable?

Can anyone recommend a good RJ11 telephone cable? I'm trying to find one that can shield against REIN or any other possible interference.
Cheers.
17 REPLIES
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Registered: ‎15-06-2007

Re: Good RJ11 telephone cable?

As the reason for the question eludes me - why do you want one and how long would it need to be
Note that an extension from the phone part of the filtered faceplate wouldn't have that problem
jafreer
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Re: Good RJ11 telephone cable?

I went with a Belkin RJ11 to RJ11 cable "Hi Speed Modem Internet Cable". It uses twisted pairs for better noise immunity and is about 3 or 4 pounds. All the usual suppliers should have it.
Does it improve the connection? I can't be sure but for the cost, it is worth a try.
artfulbodger
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Re: Good RJ11 telephone cable?

Because I'm not happy with the cheapy one that came supplied with our  Panasonic base station (which shares the master socket with the OR modem). Only a metre long.
artfulbodger
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Re: Good RJ11 telephone cable?

Thanks jafreer. But it's the rj11 to bt431a connection that I'm looking for advise on.
Community Veteran
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Re: Good RJ11 telephone cable?

that could be tricky as all/most of the ones I have seen are equally cheap and nasty
artfulbodger
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Re: Good RJ11 telephone cable?

I feared so too, oldjim. Thanks anyway!
JasonMassey
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Re: Good RJ11 telephone cable?

tandy sell twisted pair rj11 cable.  search for the length you need
http://www.tandyonline.co.uk/high-speed-rj11-dsl-cable-5m.html
artfulbodger
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Re: Good RJ11 telephone cable?

Thanks Jason. The twisted pair DSL is what I've got already between the modem and master socket. It's the phone (rj11) to BT socket (bt431a) that I'm after. Unless I'm looking for something that doesn't exist?
g1000
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Re: Good RJ11 telephone cable?

Quote from: artfulbodger
It's the phone (rj11) to BT socket (bt431a) that I'm after.

I don't think 1m of filtered cable to the phone is going to affect your broadband? What aren't you happy with? If you unplug the phone cable from the master socket what improves?
artfulbodger
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Registered: ‎16-01-2015

Re: Good RJ11 telephone cable?

A few months ago I had a specialist REIN engineer confirm there was some interference near the master socket. We tried everything to pin point it, but couldn't really establish its source. Bizarrely at one point it seemed as though the REIN was coming from the OR modem power chord, which happened to be plugged into a power socket right next to the master socket! I moved the power source away, but there was still some untoward levels. He even changed the power chord to a new one but that also seemed to show the same level of activity (which he was really puzzled about!). Anyway in the end we replaced the faceplate with a Mk2, a lift-and-shift was done for me and SNR reset, and everything's worked fine since then (no random re-syncs), and even better with the introduction of G.INP. However he recommended possibly moving the DECT phones away from the router (Asus) / OR modem / master socket setup to improve things generally in future. I was just thinking of possibly trying to replace the phone lead with something better instead of getting rid of the phone completely (the master socket sits in the office - can't really do without a landline in there)?
Before everyone jumps on the bandwagon and says "if it ain't broken, don't fix ... etc etc", but I was just thinking how bad DECT phones can be near a mastersocket/FTTC setup?
Cheers!
jafreer
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Re: Good RJ11 telephone cable?

I also think that the supplied cable with the phone should be fine. Reason for this is that all the filtering is done at the master socket. If you have a VDSL extension from the master socket, you would want that on a good quality cable. VDSL2 frequencies run up to 17 MHz, hence the requirement for a good cable. Your phone cable is only carrying phone frequencies (a few KHz), so the supplied flat cable should be absolutely fine.
Just saw your reply about a possible REIN issue. Do you have the means to monitor the errors on your line (for example, an unlocked modem that you can use to monitor line stats)? That would allow you to monitor error rates (FEC is useful to monitor) and then you can change things about and see what has a positive effect.
I had a similar issue with noise from power line networking adapters. I had no idea there was even a problem until I started monitoring line stats. Once I had the stats, I could start to switch things off, move wiring etc, to see what reduced the FEC error rate on the line.
Might be worth considering. What model of modem do you have?
artfulbodger
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Re: Good RJ11 telephone cable?

FEC is zero, jafreer. Always has been - never seen it change infact since G.INP came into being (I know it's got nothing to do with REIN, but I'm just using it a yardstick from when I really started to watch things carefully).
Might change the faceplate to a Mk3, can't harm things I guess.
JasonMassey
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Re: Good RJ11 telephone cable?

Quote from: artfulbodger
Thanks Jason. The twisted pair DSL is what I've got already between the modem and master socket. It's the phone (rj11) to BT socket (bt431a) that I'm after. Unless I'm looking for something that doesn't exist?

http://www.amazon.co.uk/BT431A-RJ11-telecom-test-adaptor/dp/B000Q8L33E
How about this, then use the twisted pair JR11 cable.
artfulbodger
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Posts: 51
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Registered: ‎16-01-2015

Re: Good RJ11 telephone cable?

Thanks Jason. But the fewer 'interfaces' you have in a FTTC setup the better. I'll leave things as they are for the time being, and invest in a Mk3 faceplate (the one I've got installed at the moment is a Mk2).
Cheers!