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Hello, my sync speeds over the last few days have been lower than expected after migrating to ADSL Max, and after checking my router with the test socket, the results are very different. While the master and other extensions get a sync of around 5600 during the day, through the test I can get full 8128 sync all day. Is this normal? Is there any way that I can fix the speeds of the extensions?
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Its not unheard of and indicates an issue with your internal wiring. You might to check everythng is filtered and maybe try disconnecting everything and re-introduce equipment one by one to see if a particular device is causing an issue.
Also look at http://yarwell.blogspot.com/2005_08_01_archive.html to see what you can do yourself to potentially improve your installation.
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Sorry, quick question: should the ring wire be removed from the master, or the extension the router is connected to?
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Register (or login) on our website and you will not see this ad.
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Best remove it at both ends
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Sorry, another question-will this interfere with ordinary telephone calls?
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No
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Thanks a lot!! Getting 8128 sync now on extension! I really owe you.
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And Phil (Yarwell) for the blog about the ring wire
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and to the BT guys who talked about it on here and prompted me to test it out semi-scientifically.
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In reply to:
will this [removing ring wire] interfere with ordinary telephone calls?
Possibly may prevent them from ringing, it depends upon your phones and filters. Test by ringing in on a mobile.
=======================================
Everything below the line above is my sig
[Notice: Private mail is turned on, but anything received by these means can and will be published]
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In reply to:
will this interfere with ordinary telephone calls?
not if your filters are all present and correct.
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In reply to:
not if your filters are all present and correct.
Some cheaper filters don't regenerate the ring wire, but instead just pass it straight through.
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In reply to:
Some cheaper filters don't regenerate the ring wire, but instead just pass it straight through.
that's covered by the "correct" bit  - such filters don't comply with the BT SIN requirements.
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Getting a 2uF non-electrolytic capacitor into something the size of two sugar cubes can be a challenge in the cheaper filters, so they either don't fit one at all, or they fit a lower value capacitor
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In reply to:
such filters don't comply with the BT SIN requirements.
Sorry, but I just checked SIN346 and it allows for the bell wire to be filtered or recreated.
Edited by cahaddras (Sun 25-Mar-07 11:57:08)
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Not wanting to drift too far off thread but would it be possible for one of us to make up a super-dooper bandpass filter for this purpose, given unlimited space?
Mike.
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but the SIN does not allow for it to "but instead just pass it straight through" as you described.
Edit: granted a filtered ring wire would comply but need the ring wire to work for many phones, are there any filtered ring wire examples in the wild ?
Edited by yarwell (Sun 25-Mar-07 12:16:51)
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do you have the gear to assess the effectiveness of filters ?
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Scope and audio sig genny.
That should do?
Guess there are some circuits out there for the ultimate filter?
Mike.
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have you looked at
http://www.adslnation.com/support/filters.php
http://www.sinet.bt.com/346v2p6.pdf
It would be interesting to see what your scope sees on a ring wire, for example, as well as on an incoming pair without the aDSL on.
Measuring the ADSL signal levels on the phone side of a microfilter would also be interesting to see if there is a performance variation between designs.
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Thanks Phil, will examine them in detail later.
Mike.
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I'm sure it's easier and cheaper to recreate the bell wire rather than filter it in practice. The real issue is how do you tell? The only practical approach is to check that each phone rings after disconnecting any ring wires. Ideally one phone should also ring without any mains power for emergencies.
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In reply to:
The only practical approach is to check that each phone rings after disconnecting any ring wires.
Agreed, especially as many don't need the ring wire in the first place.
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Hi Phil, had a look at that page at ADSNATION.
Have ordered a ADSL Nation XF-1e filter, may cure the ADSL noise that I sometimes get creeping through to the phones.
Will let you know how I get on.
Using the freebie cheap Chinese one Speedtouch give you at the moment, XF-1e must be better than that.
Mike.
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"Ideally one phone should also ring without any mains power for emergencies."
Assuming one is a 999 operator taking calls at home.
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be interesting to see if you can measure the difference other than with your ADSL kit.
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In reply to:
I'm sure it's easier and cheaper to recreate the bell wire rather than filter it in practice
Very shortly, all new NTE's will come with a bell wire 'choke' fitted as standard, which will stop the ADSL signal getting into the bell wire in the first place. Still not quite as good as the face plate filter, but not at all bad.
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In reply to:
Very shortly, all new NTE's will come with a bell wire 'choke' fitted as standard
Be interesting to see if they arrive on the "grey" market too. Not sure why they didn't bite the bullet and go for 2-wire circuits on new installs.
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Does that apply to the external NTE's also?
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I thought it was:
a) a requirement - BT or your telephone operator may need to contact you.
b) a sensible precaution. You might want to be able to receive calls even if there was a power cut or your mains had blown. (In those circumstances I would certainly want to be able to make calls and that tends to imply that I would want people to be able to ring me).
For both of these, therefore, it would be essential to have one phone which did not need a mains supply, could make and receive calls and the bell would ring for an incoming call.
THere may be other solutions, e.g. a mobile phone which might work in many circumstances (given that it is charged when you need it in an emergency and the signal is good enough).
A significant point is that, in an emergency, it may not only be outgoing calls that are essential.
John Underwood
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In reply to:
Assuming one is a 999 operator taking calls at home.
Or you simply want the emergency services to be able to call you back to get or give some important information?
It's an important point. It's quite common for a modern mains powered phone to ring fine using mains power normally but to rely on the bell wire to power the ring if the mains is down. You snip the bell wire, don't realise that the phone no longer rings without mains power because the filter's the wrong type, and end up without an important life line and not realising it until it's too late.
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Do 999 operators really tell people they'll return the call later? AFAIK they stay on the line as long as possible/necessary and are capable of holding the line open indefinitely so even if the caller hangs up, the next time they lift the receiver the operator will still be there.
While I agree it might be a bind to unwittingly lose incoming calls for a time, it is certainly not anything approaching putting oneself in peril.
Edited by Stabilo (Mon 26-Mar-07 08:32:41)
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"a) a requirement - BT or your telephone operator may need to contact you."
Not as far as I'm aware, since BT themselves offer (or did) incoming calls barred lines (we had one at one of our remote sites). Also, for a requirement for a ringer to be useful, they would have to force us to plug a phone in (what about dsl only/mobile phone households) and have an obligation to answer it whenever it rang (what about the elderly, or even the away from home?).
So a sensible precaution against anyone wanting to call you whom you may want to receive yes, but I can't think of a single emergency situation nor contractual or otherwise requirement where it might apply.
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Police/fire/ambulance operators often need to ring back if their personel have difficulty locating an address. They may stay on the line if someone is dying there an then, e.g. not breathing but otherwise will end the call after taking the details and dispatching a crew/patrol
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No idea ? Seems a little hopefull.
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in power cuts we get people ringing round to see who still has power so a working phone is useful when the lights go out.
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