Re: Reviving an Ernest D3 payphone, Telelink, LCD
ChrisRR
06/24/25 09:00 PM
As someone who has been down this road recently, I wish you the best of luck. Parts are scarce, software is even rarer, and getting it to run on anything modern is an exercise in frustration.
I don't mean this to dissuade you, in fact I hope it has the opposite effect. Once you start down this path, you find yourself compelled to see it through.
Try the internet archive for software. I managed to find Expressnet for programming protel pay phones there. For software emulation, you might get dosbox to work, but if you don't, try 86box. Rather than emulating a dos environment, it emulates the hardware, and you'll have to find and install dos and any other software you want, just like the bad old days. For me, I could get dosbox to work, but it had a lot of issues. I went to 86box, and after some teething pains, it works really well. For protel phones, you need an external serial modem and some way to dial the phone from the modem. An old electronic key system with analog station ports works for this. I used my avaya partner ACS. I can reliably program protel pay phones now with almost 100% success.
I don't remember if the ernest phones are similar to western electric ones or not. If its a western style phone with the coin slot on the left, ditch the controller and use a protel board. Heck, even if its a right hand coin slot, protel makes boards for those too. They have a button on them to program them locally without a PC.
PM me if you want to get into deeper detail. I've brought back a handful of old payphones, and actually just put one in service at my second job. It doesn't get a lot of usage, but it does generate a lot of conversation. It does work and take coins as it should. For dial tone I'm using an ATA and a voip provider. The service is super cheap so even if it doesn't get much use, I don't care. It's a lot of fun and I enjoy calling it when a customer walks by to see their reaction.
I'd post a picture, but I can never remember how the heck to do it.