rotary dial phone

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#1660688 29-Oct-2016 22:04

richms:
toejam316:

Pretty sure that should do the trick - the other option if you're willing to get into the back of the jack points is to find a suitable capacitor (I can't remember the values off the top of my head) and just terminate it across the jack point. It'll have pretty much the same effect.

There is no terminal on the board to connect to, and on the 2C outlets there is no pin present either.

It could go into the phone however, just across the terminals where the ringer wire would terminate and one of the line terminals (cant recall the colour) - if it doesnt ring then try the other one.

That would also mean the phone is no longer tied to a single outlet to actually work. Also perhaps add a switch, since those old phones are really annoying when they ring.

Yeah, I mean literally jumpered across the pair. It's not pretty, and makes CPE look buggered on a test, but it does work. No idea how it affects DSL, but I've come across it before to make an old workshop bell work.

Anything I say is the ramblings of an ill informed, opinionated so-and-so, and not representative of any of my past, present or future employers, and is also probably best disregarded.

richms

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#1660691 29-Oct-2016 22:11

Are you saying to put the cap across the line pair? Because that will not work at all.

Richard rich.ms

gumboot19

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#1660693 29-Oct-2016 22:12

thanx for the info . do you think swapping out the phone jack with the one with the capacitor will work tho ? the one gregf is kind enough to supply .

richms

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#1660695 29-Oct-2016 22:12

gumboot19: thanx for the info . do you think swapping out the phone jack with the one with the capacitor will work tho ? the one gregf is kind enough to supply .

Yes.

Or put it on the end of a piece of cable with a plug on it so you can move it around.

Richard rich.ms

gumboot19

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#1660696 29-Oct-2016 22:25

only one more thing . the wifi router is plugged into same jack ?? but does have a dsl filter on it . i assume this system will work with ratary dial plugged into dsl filter as well ?

richms

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#1660700 29-Oct-2016 22:36

Do not put your DSL signal thru the 3 wire socket.

There is a good chance that your dsl filter doesnt pass the third wire thru, so if you put a filter downstream of it, then you may find you still get no ringing.

Richard rich.ms

gumboot19

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#1660718 29-Oct-2016 22:47

ok so .. put new jack in with capacitor . i can plug a 1 into 2 adaptor into jack . one for rotary dial phone and the other straight to wifi router ? will that work ?

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gumboot19

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#1660725 29-Oct-2016 23:01

thing is i need to run wifi router and rotary dial off same phone jack .......
so if i split the new capacitor jack with a multi connection i can run rotary dial off one plug and wifi router off the other one right ??

richms

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#1660734 29-Oct-2016 23:18

gumboot19: ok so .. put new jack in with capacitor . i can plug a 1 into 2 adaptor into jack . one for rotary dial phone and the other straight to wifi router ? will that work ?

No because you will need to filter the connection to the antique phone and the dsl filter will remove the 3rd wire signal as it is not needed anymore.

You need to put the 3 wire socket downstream of the dsl filter and it will create the 3rd wire from after the filter so the misballance will not affect the dsl connection.

Richard rich.ms

Bung

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#1660736 29-Oct-2016 23:34

How old is the phone? Ìf it is one of the type used up to early 80s circuit diagrams showing internal straps are easy to find. Just put back the link above the 3rd wire in the cord so the internal capacitor is used for the bell.

Clima

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#1660738 30-Oct-2016 00:07

A "Master" socket has a 1.8uF capacitor from pin 2 to pin 3 and a .47M resistor from pin 3 to Pin 5. Pin numbering refers to the 6-pin connector - many of these connectors are only 4-pin, missing the outer pin 1 and pin 6. The third wire to the phone is from pin 3 and the 2-wire phone line connects to pin 2 and pin 5.

When dialing with the old rotary dial phone, a contact intermittently interrupts the line loop creating a series of pulses. This impulses on the line will play havoc with your DSL. If you have any modern 2-wire phones connected as well then the dialing impulses will appear to them as a form of ringing and they will respond accordingly.

Bung

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#1660743 30-Oct-2016 00:42

3 wiring was primarily needed because bells would react to the dial pulses. The ringer chip in modern phones usually includes something to suppress false triggering and dial chirps.

.

richms

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#1660748 30-Oct-2016 01:09

The 3rd wire also shunted out the ringers which would act as tiny speakers to the conversation on the line as well.

Richard rich.ms

gumboot19

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#1660771 30-Oct-2016 08:20

im thinking its 1960s phone . and wondering now shall i put a capacitor in the phone as someone suggested earlier ? if so on which wire ? green red or yellow ? a capacitor will be easy to get

froob

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#1660774 30-Oct-2016 08:22

richms:
gumboot19: ok so .. put new jack in with capacitor . i can plug a 1 into 2 adaptor into jack . one for rotary dial phone and the other straight to wifi router ? will that work ?

No because you will need to filter the connection to the antique phone and the dsl filter will remove the 3rd wire signal as it is not needed anymore.

You need to put the 3 wire socket downstream of the dsl filter and it will create the 3rd wire from after the filter so the misballance will not affect the dsl connection.

Probably the best approach, if you can manage it, would be to install a master filter on your line. That would involve installing a separate jack just for ADSL and new wiring.

Failing that, the approach above sounds like the next best, but would involve a mess of wiring that you may not be able to conceal.

There have in the past been plug in filters that allowed a rotary dial phone to ring - my parents have this setup along with an old school 3-wire phone system. They actually get pretty good ADSL performance, but it would no doubt be better if they did some upgrades.

I haven't tried a setup with the phone and ADSL connected via the same jack, and don't have ADSL anymore so can't test it for you. I think I may have also thrown out all of my plug in filters, but could have a look and see if I can find one that lets the bell ring, if you want to go down that route.

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