atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services Telephone Repairs & Equipment Western Electric 1D2 Payphone Conversion

Hi

I aquired a 1D2 payphone from work and am trying to convert it for use on a POTS line in my garage. I can get the dial tone but people cannot hear me. I have tried different handsets and presently have a new handset on the phone. It has a 60C keypad and a 32A network board. I can make these things work all day on a coin line but can't get it to work at home. If someone knows how to modify one of these to work on a POTS line, your help is greatly appreciated.

Mine worked right out of the box on a standard CO line. I know this is a bit of a stretch, but have you tried reversing polarity on the line?

Flipping tip and ring didn't change anything. I don't get any noise in the receiver when I blow into the transmitter. It's almost like the transmitter is dead. It does the same thing with different handsets.

Chris

Haven't worked on too many payphones, but I've had that issue on 500 & 2500 type sets. Try moving the handset leads on the block.

There is a post-pay option that doesn't cut the transmitter through until coins are deposited. I'll check the jumper options on mine to see how they are set for the pre-pay mode and check back.

There may also be a ground start-loop start option, I don't remember, but check for that.
It must be loop start.

Thanks Ed. I didn't know about the post-pay option. I can fix a 5E or DMS10 switch with no problem but can't seem to figure out this phone.

Chris

Chris, I didn't find any option jumpers in mine. Let's double-check the handset cord connections. This is how they should be:

Green to terminal 4
Red to terminal 3
Black to terminal 6
Yellow to terminal 8

Also, it the main chassis in your phone a 32B? You might have a 1D2 phone housing that was retrofitted to be a COCOT.

Lastly, make sure that your incoming line is connected to terminals T and R. Sometimes, people use terminal L1 by mistake.

I hope that some of this helps. If not, let me know and I'll check other terminals for you to make sure that all of the other wires are in the proper places.

Hi Ed

When I connect my handset on the terminals you told me, the transmitter will not work. In order for it to kind-of work, I have to move the green wire from terminal 4 to terminal 7. This makes it work a bit but people tell me I am really quiet and it is hard to hear me.

The chassis in my phone is a 32A. I have tried a different chassis (32A) and it still had the same result. I may have a 32B or C laying around at work at one of my other central offices. I will look tomorrow.

I have been on tip and ring and I have taken my butt-set to verify that I have the correct polarity.

I am wondering if I possibly have a bad keypad because I have to move the green wire to kind-of make it work.

Chris

If it's the old contact type dial pad, clean the contacts. If it's solid state I wouldn't think that would be the problem.

Thanks Bill

It appears to be a solid state keypad.

Chris

Well, I have tried a near new 32C board today and it didn't make much difference. Next thing I am going to try is a new keypad. Hopefully it will do the trick.

Chris

It is definitely solid state. Chris, try moving the black handset wire to the same terminal as the yellow one just to see if the transmitter works. If that doesn't do anything, try putting the black handset wire on the same terminal with the green one and repeat. Changing out the dial in that thing is quite a chore that I wouldn't wish upon anyone unless absolutely necessary.

Ok. I'm making some progress but need a little more help.

I found out something interesting. I found out the replacement handset colors are different than a standard Western Electric handset. This is what I have now. I have the receiver on terminals 8 and 4 (black and yellow) and the transmitter on terminals 3 and 6 (red and green). It appears to be working correctly but now it is very quiet to listen to and people tell me I sound far away. I tried a genuine Western Electric handset off my model 500 and got the same results. Any ideas why it is quiet?

Chris

I discovered that the black and yellow on my new handset run the earpiece by putting a AA battery across the terminals and listening for the pop.

Hello

Thank you for all of your help. I figured it out and my phone is working now. I found out that the problem with it being real quiet was because the initial rate switch was set to zero. I bumped it up to a quarter and now everything works. I sound clear and can hear people through the receiver.

Thanks again

Chris

Chris:

I feel like a toad for not having checked back in on your thread. I'm glad that you got it figured out. Thank you very much for keeping us abreast of your accomplishments. Your success will surely help others who may come here via a support search. Your due diligence will probably save someone else a lot of troubleshooting time in the future.

Please accept our welcome to hang around here and offer any assistance you can on CO switch issues. If you look around in our archives, we often have questions that the telco business offices leave equipment vendors and end-users wanting to 'lock and load'. It isn't until a switch tech comes up with that "magic phrase" that we need in order to get our problems solved.

You can also count upon getting a bit of experience with regard to CPE and get an occasional joke or topic for discussion along the way.

No problem Ed

Feel free to drop me an email if you have questions on CO stuff. I am pretty good with AFC, Calix C-7, Adtran TA3000, 1148 and 1248 and some older carrier equipment (Seiscor, SLC series 5, etc). I used to know 5ESS pretty good and I know DMS-10 enough to keep it from crashing.

Chris

Has anyone got Docs for the 32A/B board, in particular the setting of rates?

Dave

Rates are controlled by the central office, not the phone itself.

Only if it is being used on a pay line.

This is a dumb board - rates are set by a switch on the board and it is being used on a home line. ID2s will normally work just fine on a POTS line just by connecting ring and tip. The coin relay does nothing, and coins are not needed, of course, and the relay must be tied so that any coins inserted will drop beyond the escrow rather than jamming it up. However, on some later 1D2s, if you don't set the rate switch to at least 25 cents, you will get no or severely reduced audio in the handset as discussed earlier in this thread. More than anything, I need docs for the 32c board manufactured by Elcotel for Western/AT&T. Unfortunately, it, too is 1995 technology, and I have been unable to find anything for it on the Web. The original 1D2 boards ere no problem to find docs for.

Earlier 1D2s require no changes to work on POTS, other than tying the relay.

This particular phone uses a Lucent 61M1PF keypad in conjunction with the 32C board. We have noticed there is a large square chip missing from the keypad, and without a spare to try as a replacement, are wondering if the fact the pad has the empty socket may explain why it has no audio or touch tones.

Alas, all the 1D2s I have myself are the older ones.

Dave