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Old 04.08.2008, 18:51
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Can anyone recommend a telephone / ISDN engineer in Basel?

I'd like to sort out the telephone sockets in my house and need either guidance from boffins on this forum so i can do it myself, or an installer/engineer.


Here's my problem: I have 10 or more standard(?) telephone/ISDN wall units dotted about the house. Each has wall unit houses 4 sockets - I think there are two for analogue phones and two for digital. I asked Swisscom to recommend an engineer (months ago). These are third party companies. I used one and to cut a long & expensive story short I now have a single functioning analogue phone socket + internet in the converted attic. I want all the sockets in the house to work. Can't be that difficult, surely?

I just want it fixed, but I don't feel comfortable messing with ISDN. I know enough about good old fashioned analogue and ADSL. I have a signal generator and tracer etc etc.

If there's someone out there that can recommend an engineer, or feels up to the job themselves (in exchange for a case or two of wine, or whatever) please let me know!!

Thanking you...

P.S. Please don't suggest I get the original engineers to come back. Or complain to swisscom :-) been there, got the T-shirt.

J.
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Old 04.08.2008, 22:06
lssilva
 
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Re: Can anyone recommend a telephone / ISDN engineer?

I am not sure, but I think that although you have all those available end node, it doesn't mean they are active.

I think that normally every street or block will have a routing box where the company activate the lines. I think only authorized employee can open those terminals.

Have you checked if they have signal?
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Old 05.08.2008, 09:16
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Re: Can anyone recommend a telephone / ISDN engineer in Basel?

I know that i have active/live services from swisscom coming into the house (as mentioned, I have phone & internet).

The 'engineers' that tried to get it all set up a few months ago managed only to connect a single socket at the top of the house (wireless internet won't cover whole house), and that was after a day and a half of scratching their heads, reversing the cores, charging me 850 chuffs and saying the cabling if too confusing. I have built 64 channel mixers, lighting controllers and valve amps in my time (WAY back in my teens...) and I was not inspired by them at all. I just don't accept it can be that difficult.

The out-going tenents had labeled each socket, to show which of the 4 sockets in each wall unit were for (phone/isdn), so it must have worked.

Oh well, failing a white knight from this forum in the next few days, I will google it some more, meter it all out, and see what a bit of initiative can acheive...
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Old 05.08.2008, 14:08
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Re: Can anyone recommend a telephone / ISDN engineer in Basel?

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Oh well, failing a white knight from this forum in the next few days, I will google it some more, meter it all out, and see what a bit of initiative can acheive...
Cannot be that hard. Take out every socket, look at wire colours, look at direction of wiring, then start tracing it.

Take a phone plug with a known resistance (solder a resistor to the end) and connect to a socket. Use a multimeter and start measuring where you find the same resistance. Make a drawing of the wiring.

Most cabling is either series or star configuration. If star, find the central phone junction. If series, track down the route of the cabling.

Would only take a few hours, good job for a Saturday morning.

Once you have the drawing made, transfer it to your PC, use Visio, make it pretty, then print it and keep it with your house info.
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Old 05.08.2008, 16:00
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Re: Can anyone recommend a telephone / ISDN engineer in Basel?

I reckon that's my best option. From a quick inspection it's a simple daisy chain affair (quite why it doesn't work I don't know).

Can I just ask: Does anyone know if ISDN cabling is basically 8 cores, connected from one socket to another in parallel? I seem to recall a resistor is needed at the last socket, but I'll look into that.
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Old 05.08.2008, 16:10
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Re: Can anyone recommend a telephone / ISDN engineer in Basel?

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I reckon that's my best option. From a quick inspection it's a simple daisy chain affair (quite why it doesn't work I don't know).

Can I just ask: Does anyone know if ISDN cabling is basically 8 cores, connected from one socket to another in parallel? I seem to recall a resistor is needed at the last socket, but I'll look into that.
My good friend Google showed me:

Wiring Explanation (Amercian):
http://www.zytrax.com/tech/layer_1/c...telephone.html

A great example (German) with wiring diagram:
http://de.wikipedia.org/wiki/Integra...igital_Network
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