sundance-communications.com/forum Forums TDM Business Telephone Systems Panasonic Telephones & Systems KX-TD816BX Caller ID shenanigans

Hello, folks

Know it's a long shot by now to ask about this, but I have to try.

My KSU is a KX-TD816BX, no silver sticker, bog standard P401A firmware. Works fine, no issues whatsoever (except clock and RTC battery, but that's another story.)

I've installed a KX-TD193DX Caller ID board on it. However, despite going to program [406] and enabling Caller ID for all CO lines, I get nothing... Either on DPT screens or SMDR output. It's the same thing as the card wasn't there.

Now, the guy who sold me the pull card told me that some systems may be incompatible with the DX variant (that, besides also processing DTMF, seems to be a widely different project.) Is it true?

Things that I tried thus far:
- Connected a PSTN phone to T1/R1 corresponding pins (I get tone, as expected, so no continuity issues);
- Tried a lot of different CID protocols using PAP2T;
- Enabled CPC (100ms), though I don't think that has anything to do with it — I just did it because "CPC" is printed on the card;
- Resetting the entire thing (system data clear);
- Tried to change some COS bits based on poorly translated info. from here (but not only it's for KX-T1232, but probably the RU version, on P211P, albeit this makes me thing there is, somewhere, some flag I probably have to toggle for it to work.)

I'm very tempted, at this point, to get all those lines hooked up to my old R-Pi to see if I get any data on D0-D7... But, if I can't make it work, I'll probably just return it.

Any suggestions?

Thanks!

Here's some configuration screenshots.

It's been a loooong time since I touched an 816, and always programmed from the telephone! Afraid I'm of no help here...