atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems My 1A2 project

Probably only need to strap the Ring side of each pair. I think the Tips are already commoned in the back-wiring.

You can't expect to know everything. Click this and print it.

After a few thousand telephones, you'll have it memorized.

1A2 was great. Hardly any trunkers.
No DIY.
Want to move you 10 btn BLF phone with Diode Matrix ringing? No, it's not 10 min job.

Want a voice announce ICM? Nice add on job.
Cable and install 4 phones, nice add on job. :toast: :toast:

Hi again,

Well, I connected the RIs to eachother and the BIs to eachother, then to the yellow/slate of the phone set.

Still no bell on incoming call.

I tested for bell voltage on CO line, and it was there (when called) and I tested the BI/RI and there was no voltage.

I am going back to study the BSP, and I do remember that there was a dashed line going from the ring generator (49 and 50) to the BI and RI, but I want to confirm that with those of you that know what is what with this system.

One other question... Isn't the line button supposed to flash or come on when there is an incoming call? Mine do not, yet they light when pushed and they wink when on hold. (And I hear the interupter as well.)

Thanks again for all of the help!
I will not give up until this thing is working...
Then I will have to study the mysteries of intercom and plumb the secrets of the 415 cards...

Joe

Th

Hi again,

Im burning the midnight lamp and have been looking at this and trying different things.

One thing that I did was to look inside the telephone, and make sure that the bell was connected. (It was.) Then I put the cover back on, and applied ring voltage to the yellow/slate pair, and it rang (whether or not the hook was up).

I double checked my wiring, and it was right... I took a crossconnect pair to the RI/BI to the telephone slate yellow pair (Pins 39 and 40).

I also strapped the RIs all together as suggested. The BIs according to the BSP are factory linked and I confirmed this.

I do think that there is something not right with my phone however, as only the first line button will bring up a 400 KTU or light up. The others do nothing. I checked my other KTU, and tried the telephone on the other station line. Same thing.

Right now, however, I am concentrating on getting the phone to ring when a call comes into the first TR pair.

Thank you again for all of the help.

Now off to bed...

Joe

Joe,

With the phone disconnected take a lamp out of button 5 or 6 hold it across the Lg & L punchings on the 66 block of line one and see if the interrupter flashes the light. We used to take the eraser out of a pencil and put the lamp end into it to the eraser hole so you could work with it. Shorting the A & A1 leads with a needle nose should activate the 400 unit.

PS: call line one while doing the lamp test

Well we know the ring generator works, because it can ring the phone directly. If the line lamp does not flash on incoming I'm suspecting the interruptor - which also might be the reason the line is not ringing through the card.

Troubleshoot this problem the normal way - check for ring generator at every point:
-Is it coming out of the sub cycle unit?
-Does it appear on the block at pins RG/RB?
-Is it coming out of the line card on the appropriate pins?
-Do you have it on the B1/R1 leads?

Etc.

Keep at, you'll get it.

Sam

What if he connected Tip & Ring to T1 & R1. As I recall, that will prevent tripping the ring detector, starting the interrupter, etc.

On my system I connected a piece of wire from T/R to the Y/SL terminals to make the phones ring...