The problem may have fixed itself. For the last 5 days the last 30 calls HAVE displayed the Caller ID on the TV. This was after all suggested solutions failed. More details are in my reply above to WiderMouthOpen
I originally accepted Cox’s default setting for Spam Blocker but just went there and discovered several things were changed, such as Yes to Voice Mail and Call Waiting. So I disabled those (I already have an answering machine) and changed Spam Blocker to block high, medium, & low (it was only set to high & medium). The first 4 test calls from 4 different phones displayed the Caller IDon the TV but the 5th call didn’t. Regarding verify codes, I haven’t had any problems with them being blocked but thanks for the warning.
'Spam Blocker' may be why some calls aren't being displayed. Blocked calls don't ring your phone. I don't think they're displayed by TV Caller ID either. They're included in Voice Tools Call History but aren't included in Cox TV's Interactive Services > Phone Tools > Call Logs.
"Spam?" started appearing on my Call History in August, 2023. Caller ID worked properly with my old DVR that died last October and with the new DVR for the first 32 days. Blocked calls don’t appear on the TV. I had 6 blocked yesterday and didn’t know about them until looking at the Call History. The good news is more and more calls are being blocked by Cox. It’s rare for me to get a second call from the same robo number which is why I didn’t get a call blocker.
When I asked if you had a call blocker, that included Cox Spam Blocker. You said you "changed Spam Blocker to block high, medium, & low", so you have it enabled in Voice Tools. But then you said you "didn't get a call blocker". If you're using Cox Spam Blocker, you do have a call blocker and it appears to be blocking spam calls and Caller ID for those calls, as it should.
Sorry, I misunderstood and thought you meant a non-Cox device of some sort like my sister's phone that displays caller ID and allows her to block about 200 numbers if my memory is correct. She's not a Cox customer. A friend also tried to talk me into some kind of third party device.
