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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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13th May 2009, 10:53 pm | #61 |
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Re: Help a newbie put a GECOPHONE 1000 into service
Sorry, you're mistaken here. It is normal, it's called "sidetone"
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13th May 2009, 10:54 pm | #62 | |
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Re: Help a newbie put a GECOPHONE 1000 into service
Quote:
The white thing is a click supressor and can be wired in parallel with (i.e. across) the earpiece. Easiest way to do it would be between the red and green wires which run to the handset, i.e. terminals T6 and T7 of the 8-way block. The green thing is a resistor, which can be used to stop the bell stopping other phones on your line ringing properly... though installing it could make the bell rather feeble. One place to install it would be in place of the short wire that links the two bell coils. Good night, Nick. Last edited by Nickthedentist; 13th May 2009 at 11:00 pm. |
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13th May 2009, 11:34 pm | #63 |
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Re: Help a newbie put a GECOPHONE 1000 into service
Thanks Nick, sweet dreams
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14th May 2009, 12:21 am | #64 |
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Re: Help a newbie put a GECOPHONE 1000 into service
Errr...
Can I just add a small comment here? You can normally hear your own voice in the earpiece - it's called 'sidetone'. It's deliberate because a dead earpice sounds odd. Generally it varies with the impedance match to the line. Alan |
14th May 2009, 8:33 am | #65 |
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Re: Help a newbie put a GECOPHONE 1000 into service
And it gives your brain some feedback, making you less likely to speak unnecessarily loudly.
Interestingly, mobile phones normally have no sidetone, and users frequently shout as a result ("I'm on the train" etc. etc.). Nick. |
14th May 2009, 10:21 am | #66 | |
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Re: Help a newbie put a GECOPHONE 1000 into service
Quote:
My modern electric phones don`t have it and it`s a bit too loud for my liking on this old phone. Is there any way to reduce it? |
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14th May 2009, 11:14 am | #67 |
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Re: Help a newbie put a GECOPHONE 1000 into service
thumpy,
Don't believe averything you read in the wiki! There should be no howl-round unless the phone is very badly designed or there is a horrible mismatch, and even with a mismatch a well designed pnone should be OK, the sidetone will just be greater. By 'Modern electic phones' I guess you mean DECTs. They don't have sidetone. Provided your phone has no faults there's not much you can do about it short of a redesign. Alan |
14th May 2009, 2:33 pm | #68 |
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Re: Help a newbie put a GECOPHONE 1000 into service
Alan,
You missed a Y out of my name :P What do you think I beleive? Because I said is can be a really bad and howl, of course this isn`t normal as the wiki states and I didn`t say it was. I might mean DECTs if that`s what a modern electric phone is :P Acording to the wiki some add back the sidetone, mine doesn`t and I prefer it. OK so nothing can be done to reduce the sidetone, will just have to live with it. Thanks Thumpyy |
14th May 2009, 2:57 pm | #69 | |
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Re: Help a newbie put a GECOPHONE 1000 into service
Quote:
As a bye-the-bye, some modern telephones fitted with VOGAD ICs provide lashings of side-tone and it's a pain - in particular the Ascom 'Berkshire' models. The only way to use them in noisy environments is to press the 'mute' button when listening, which is also a pain... You can't win!
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14th May 2009, 3:14 pm | #70 |
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Re: Help a newbie put a GECOPHONE 1000 into service
thumpyy (with an extra y),
Keep calm. DECTs are the modern cordless phones that you can wander around the house with. As they have a full duplex (digital) circuit between the handset and the base there is always a danger of unwanted feedback, so most try to keep the sidetone low or zero. All modern phones are 'electronic' in the sense that they contain electronic circuitry. After all, it's very difficult to generate DTMF without it. Having said that, my original comment stands. A properly designed phone should not howl round even if seriously mismatched. Alan |