Re: Attn Kraftee - help please!!



Graham. wrote:




Well in a dire emergency where a cable has been damaged
and one wire of both the remaining pairs have each been
open circuit, I have been known to use one wire from each,
but to split them when both pairs are intact? It shouldn't
happen, but your reasoning is sound, so lets pursue it.

If you and your neighbours lines are in split pairs, I would
expect a measure of audio crosstalk.
Moreover, I would expect to hear the ringing waveform
in your earpiece when your neighbours phone is ringing and
vice versa. The degree of these effects would, of course,
depend on the length of cable with the split pairs, but I would
say even a run of 5 meters would be enough to hear when
ringing is present on the other line.


Thanks Graham.

My thoughts as well. Of course for a simple PTSN, the use of odd wires isn't so much of a problem but for BB - well!!

At the moment the house next door has just changed hands and he hasn't got a phone connected so that makes life a bit difficult.
However (if no-one is looking) I might just put a test set on that pair and listen across while shouting on the other!!

Mike

.

Relevant Pages

  • Re: Edge response, dynamics, and really ugly time constants
    ... Twiddle the knobs for least ringing and read off ... the settings. ... Then wire in that 4.7K and 330pf series capacitor, ...
    (sci.electronics.design)
  • Re: amorphous metals
    ... > If you can draw it into wire, ... Many amorphous materials can devitrify at relativly low temperatures ... Much like C.D. Graham, ...
    (sci.materials)
  • Re: Vintage phone wont ring on house wiring
    ... (third wire ringing). ... Many electronic phones just use the A & B wires on ... pins 2 and 5 and will work without the third wire present. ...
    (uk.telecom)
  • Re: Vintage phone wont ring on house wiring
    ... ringing from pin 3. ... and 5 and will work without the third wire present. ... because extension sockets and BT Lineboxes are often ... numbered in reverse, such that pins 2/5 are transposed, ...
    (uk.telecom)
  • Re: iG5 sleep light update
    ... Graham J Lee wrote: ... > I saw that one come down the wire a couple of weeks ago - I think it's ... > actually just timer based on the earlier iMacs. ...
    (uk.comp.sys.mac)