Caller ID Not Showing on TV

Voice/Internet Modem: Brand: ARRISModel: TM3402A

My Cox landline phone doesn't have a screen, only push buttons. 

I only have one DVR.  My 3 mini-boxes don't display caller ID.

So we don't know if this is a caller ID issue or a TV caller ID issue. Also, the fact that it sometimes works means it's not a issue with a code on the telephone switch or something. I would suggest contacting Cox and see if they can escalate the issue. Maybe reprovisioning your modem might help. That basically means unassigning the service from the modem and then adding it back on.

Just sent them an email with a link to this and referenced Bruce's post from 7 years ago where an account refresh followed by the user doing an unplug/replug fixed it..  I'll keep you posted.

Cox had me go to preferences on the DVR and highlight COX VOICE, then press OK to turn on.  It was already on so I turned it off and then back on.  It didn't fix the problem and I reported that to them.  They replied "It's possible that the change needed some time to take effect."  I just emailed this to them: "The next day 2 calls did not display the Caller ID on the TV, 5 calls did, and I was out of the room on 2 calls and don't know if they did or not.  All of them appeared on the Call History Report.and they were all robocalls.  The first call today did not display.  It’s the only call so far."

Cox Social Media Support & I exchanged emails all day yesterday.   They said there is a signal level issue at the box and scheduled a technician visit.  I asked if we could first try what has worked for other customers before, for example:
1. "Reprovisioning your modem might help. That basically means unassigning the service from the modem and then adding it back on."
2. "A forum search found an instance of this issue being resolved by Cox pushing out a cable box refresh.  But that was years ago."
3. Reply to Bruce 7 years ago,  "We've sent an account refresh. At your convenience, please unplug the power to the receiver for 2 minutes. Allow the reset to finish, then check to see if the TV Caller ID banner appears while watching TV and receiving a call."  This fixed it for him
I think these are all saying the same thing using different terminology. 

So Cox sent a refresh with instructions to wait about 10 minutes after it completed before calling my home phone to see if TV caller ID is restored.  After waiting 15 minutes, calls from 2 different cell phones did not display on the TV.   But 5 recordings disappeared, which is why I only do daily updates every 3 days.

Then I unplugged the DVR and waited 20 minutes then plugged it in.  It finished rebooting in 5 minutes.  I waited 30 minutes and a call from one cell phone didn't display but from a second cell phone it did display.  I told Cox I didn’t want to pay for a tech visit.  He told me their policy is I pay if the problem is not caused by Cox equipment.

So I cancelled the tech visit and installed a 3dB attenuator at the input to the DVR to see if that would help with the signal irregularity.  The rebooting process deleted 5 more recordings - - 10 total for the day.  It also did NOT fix the Caller ID problem.  Previous tech visits have not fixed signal problems either.  All they want to do is replace my DVR with a different one that also doesn't work.  Complaints in the Forum about this go back over 7 years.  Without a reliable Caller ID and reliable recordings I don't need a DVR and might as well go back to AT&T who just installed fiber.  I can record TV to my VCR from my antenna. 

Is the cable box the DVR?  If so, on one day the lack of the Caller ID display on the TV was shortly after the Daily Update which reboots the DVR and on another day it was before the Daily Update but did it again after it ran..  I usually skip the Daily Update every day or two and on those days some calls display and some don't.  All calls are appearing on the Call History but there is no pattern on the Caller IDs that might explain, such as when the Caller ID is Spam?+18204002539.  When I made test calls from my cell phone, sometimes the Caller ID shows and other times it doesn't.

Please see my reply above to WiderMouthOpen that I just posted.

I'm not using any type of spam call blockers.  All calls appear on Call History, including calls that ring my phone that aren't displayed on TV & calls blocked by Cox that don't ring my phone or appear on TV.  Calls from all sources have not displayed on TV including robocalls, calls from my 2 cell phones, and calls from my neighbors cell phone and home phone.  But it's intermittent - - sometimes the same number does show on the TV on one call but not the next, or fail to show but do Display on the TV on the next call a few minutes later.  Cox refreshed the DVR at my request.  My email to them included your previous suggestion of reprovisioning but I'm not sure the tech knew what that involved (the actual text I sent is in my reply to WIderMouthOpen). 

On a related subject, you asked once if my recordings only disappeared after a Daily Update.  The answer is only after the DVR is rebooted for whatever reason.  But not after every reboot.  Sometimes nothing is deleted for several updates or rebootings.    I've been keeping a daily log since 8/25/24, and schedule the updates for 8-10 AM so I can monitor how long each step takes and write down what recordings disappear.  I skip 2 days in a row to reduce the chance of disappearances.

I really appreciate your assistance.  Many thanks.

There doesn't seem to be any consistent pattern for calls that display on TV Caller ID.   This won't fix that issue, but have you ever considered just blocking spam calls?  Cox's 'Spam Blocker' prevents calls from ringing, but they still appear in Call History.   See this post.  You can always opt to send spam calls to voice mail instead of blocking them.  The one issue I've found is that verify codes sent to your phone are sometimes blocked as spam.  You may want to temporarily disable 'Spam Blocker' or change from 'Block' to 'Allow' when signing into a website that sends a verify code to your phone.

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.