Telephone (80's 500 Desk Set) Question

[rp2813]

Hey guys, I just got a standard touch-tone Bell System knock-off (made in Taiwan) phone to start ringing again after using an old 302 model's wiring as a guide. It seems the wiring to the ringer had been seriously messed with and I had to fool with it for a while before getting the right wires on the right terminals. I was fairly confident that I had been successful when I connected the phone and some kind of impulse caused the striker to just lightly tap the bell once.

This made me wonder if I've wired the ringer in a way that causes "ringback" when using a rotary phone. This is something I've experienced in the past where if dialing a rotary phone, as the finger wheel returns to its resting position the ringer taps out each click of the switch, like if you dial the number 5 you will hear 5 single taps of the bell as the finger wheel returns back to the resting point.

I know there is a way to eliminate this situation but have forgotten if there is anything I can do with the wiring arrangement to fix it.

Anybody with knowledge in this field who can provide some suggestions? This Taiwan phone has all the same terminal blocks as a true Western Electric set so it should be easy to identify where I need to make my fix if any alterations to the way I've got it wired are necessary.

Thanks,

Ralph

 

[bellalaundry]

Try this...

My suggestion would be to reverse the "tip and ring" (red and green)wires that come into your phone from the jack.

Guy

 

[rp2813]

Guy, is that the same as the "L1" and "L2" wires? It seems the color-coding on the wires isn't following Bell System guidelines.

After a bit of trial & error I managed to get the phone to ring by switching around the wires coming from the ringer that were terminating on L1 and L2. Wouldn't reversing the tip/ring (if those are AKA L1 and L2) put me back into an non-ring situation, or would I also reverse back the ringer wires as part of the operation?

 

[selectomatic]

ITT used essentially similar networks

Hope this helps.

-kevin

 

[selectomatic]

The reverse side.

-kevin

 

[cadman]

Ralph, if you're dealing with the mechanical gong style ringer, you might want to check the tension setting. There should be a small diameter rod near the striker that can be "latched" into a formed hook to provide tension against the striker to resolve this type of problem.

Even up through the '80s there were two-party lines in some rural areas though the ring ckts were seperate. In those cases one lead of the ringer went to the yellow wire from the phone co. Switching that lead to Green would adapt the set back.

How many phones are on your line?

Cory

 

[rp2813]

Kevin, thanks for that literature. I do have a copy of some old Bell System information but it's in with a box of old phones up in the rafters and not easily accessible. I took a shot at using a handy 302 model as my guide and with trial and error I got the phone to at least start ringing.

Cory, I'm testing this phone out at home and I do have a few other phones connected. However, it's going to be used by my mom in her room at a nursing home, so it will be the only phone on the line. She's seriously visually impaired and has gotten to the point where she can't use a cordless. She doesn't know which end is up, she sometimes cuts the call off when she answers, etc, so it's time to giver her a regular phone with a cord on the handset so she knows which way is up, and when it's hung up, it's hung up. She sometimes returns the cordless to its base backwards or hits the speaker phone button on the base by accident, so your basic 500 phone should be more fool-proof for her.

It's not a big deal if the phone is configured to cause the ringback situation since it's touchtone and will be the only phone on the line, but I wanted to get it wired right in case I ever re-deploy it at my house.

Thanks for all the help thus far.

Ralph