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Topic # 239979 13-Aug-2018 19:43
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Anyone know how to wire up this 2 line rotary phone to work with at least line 1 or does it need a PBX to go with it?

 

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  Reply # 2072962 13-Aug-2018 20:37
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Hard to tell in that bottom photo with all the wires covering the terminals. 

 

Is the curly cord at the back the one that goes to line? Follow the red/white out of that cord and see where they go. Generally, red/white is your phone line pair (the green and blue is for the ringing circuit) But you will need to add a resistor on one of the legs (in series) to make it ring - best place to get the resistor is snip it off an old BT jackpoint, it's the big yellow round thing.

 

Then your next issue is the dialing. Should be OK on a "normal" analogue line (one from the NEAX). Otherwise I guess you could try setting up an ATA with pulse dialing, but I don't think that would be very successful at all.


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  Reply # 2072964 13-Aug-2018 20:48
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Is pulse dialing still supported by Spark or (m)any ATAs?





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  Reply # 2072965 13-Aug-2018 20:50
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The Curly wire is the receiver handle.

 

 

 

Here is a better shot of the wires

 

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There is plenty of sites that show you single line phones as they only have 3/4 wires going in




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  Reply # 2072966 13-Aug-2018 20:51
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Detruire:

 

Is pulse dialing still supported by Spark or (m)any ATAs?

 

 

 

 

It would come down to the Hardware in the exchange I guess, if it's not the latest kit it might still work.


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  Reply # 2072968 13-Aug-2018 20:56
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Ahh understood. Missed that photo with the line selectors... that makes it tricky. I would start with trying the "known pairs" - red/white green/white white/blue

 

Take a live phone line, strip back the wires and just touch across a bunch of pairs and see what happens!

 

Edit: And yea, pulse dialling should be fine on any line that is "NEAX powered"


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  Reply # 2072972 13-Aug-2018 21:16
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You can't use pulse dialling on any ATA and you won't be able to either on Spark voice circuits that are now on VoIP.

 

To use it with an ATA you need one of these https://www.dialgizmo.com/

 

That adapter isn't the reverse dial unit though, somebody built one that supports reverse pulse dialling that NZ uses.

 

 

 

 




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  Reply # 2072974 13-Aug-2018 21:32
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sbiddle:

You can't use pulse dialling on any ATA and you won't be able to either on Spark voice circuits that are now on VoIP.


To use it with an ATA you need one of these https://www.dialgizmo.com/


That adapter isn't the reverse dial unit though, somebody built one that supports reverse pulse dialling that NZ uses.


 


 



What do you mean by reverse dial unit?

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  Reply # 2072977 13-Aug-2018 22:07
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mckenndk:

Here is a better shot of the wires



There is plenty of sites that show you single line phones as they only have 3/4 wires going in



Underneath that forest of wires is the same nzpo 100/bpo 746 type single line phone. I'd find a cord with your preferred plug on it and connect the 2 line wires directly to the circuit board and arrange the links as shown on one of the sites you've found. The phone has its own capacitor available no need to find one.

Edit if you look at the dial it goes clockwise 0123456789 whereas the BPO equivalent goes 0987654321

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  Reply # 2073061 14-Aug-2018 07:18
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mckenndk: What do you mean by reverse dial unit?


NZ pulse dialling is reversed compared to many larger countries, here dialling 1 is 9 pulses, dialling 9 is 1 pulse.
So with the linked unit to actually dial 021, you'd need to dial something like 078.




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  Reply # 2073071 14-Aug-2018 08:21
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Dialgizmo has some dip switches inside, which allow you to set it to the NZ number configuration. I have a phone nearly identical to that one hooked up via my ATA. The other thing you will need is a phone socket or adapter with a capacitor in it to make the bells ring.

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  Reply # 2073081 14-Aug-2018 08:50
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andrewNZ:
mckenndk: What do you mean by reverse dial unit?


NZ pulse dialling is reversed compared to many larger countries, here dialling 1 is 9 pulses, dialling 9 is 1 pulse.
So with the linked unit to actually dial 021, you'd need to dial something like 078.

 

When I were a kid we could make free calls from phone boxes by tapping out 10-n pulses for each number with the hang-up bar.

 

 


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  Reply # 2073095 14-Aug-2018 09:21
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kryptonjohn:

 

andrewNZ:
mckenndk: What do you mean by reverse dial unit?


NZ pulse dialling is reversed compared to many larger countries, here dialling 1 is 9 pulses, dialling 9 is 1 pulse.
So with the linked unit to actually dial 021, you'd need to dial something like 078.

 

When I were a kid we could make free calls from phone boxes by tapping out 10-n pulses for each number with the hang-up bar.

 

 

 

 

We did the same for a while, then the Post Office (pre telecom) must have wised up to this scam that must have been costing them several dollars or even more each year in total lost revenue, and made some changes to all the phone box phones.  Can remember some complication - like you could make a call, but the person you called couldn't hear you.


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  Reply # 2073097 14-Aug-2018 09:26
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froob:  to make the bells ring.

 

Yeah - but then you'd feel compelled to answer it, get your leaking computer files sorted, make large donations to unknown charities, invest in Estonian hedge funds, and tell some old people that they've dialled the wrong number.


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  Reply # 2073120 14-Aug-2018 09:52
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In the late 70's the phonebox mechanisms were modified so the hook switch couldn't pulse fast enough to dial.

The old phones have a capacitor available. They can be 2 wired without other adapters. The bell is lower impedance than ideal and a 3k3 resistor can be added in series if there are parallel phones. They are old and towards the end the transmitters were upgraded to electronic. The original carbon mics soon became noisy.

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  Reply # 2073129 14-Aug-2018 10:05
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Bung: In the late 70's the phonebox mechanisms were modified so the hook switch couldn't pulse fast enough to dial.

 

yeah, but they needed to go an do it to every phone, 

 

We had one at college in the early 80s that you could still 'tap" (I suspect it was sitting on a regular line and the school was just pocketing the takings and it wasn't on any of the Post Office lists)


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