New Member

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9 Messages

Thursday, July 9th, 2026 6:05 PM

Time embedded in caller ID incorrect after power outage

After a three day power outage the time signal embedded in caller ID is off by an hour.  Comcast support says they don't see anything wrong with the modem but I don't think the problem is in the modem.  Have power cycled several times hoping modem would pick up signal from upstream but no joy.  Anyone have any suggestions?  Anyone else in greater Lansing Michigan area noticing same issue?  Thanks.

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Official Employee

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92 Messages

5 days ago

 

 

Thanks for reaching out. We can understand why that would be confusing, especially after a multi-day power interruption and several power cycles with no change.

 

You are right that this may not be a modem issue by itself. With Xfinity Voice, the caller ID time can be affected by the phone base/handset settings, the time zone or daylight saving time setting on the phone equipment, or the voice service signal being passed to the modem.

 

A good first step is to check the date, time zone, and daylight saving time setting directly on the phone base or handset, if your phone has that option. If it uses batteries, you may also want to remove the batteries from the handset, unplug the phone base from power, unplug it from the modem, wait a few minutes, then reconnect everything and test again with a new incoming call.

 

If the time is still off by exactly one hour after that, we would want to review the Xfinity Voice service from our side and check whether the caller ID time signal needs to be refreshed or corrected. Please let us know the model of the phone you are using and whether the incorrect time shows on every incoming call or only certain calls.

 

New Member

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9 Messages

I have tested with two different models of Panasonic wireless basesand handsets (models KXTG9391T, and KXTG4741).  My Comcast Arris phone modem is connected to four lines in my office.  I can duplicate my results by calling into any of the four lines.  If I set the time manually on the Panasonic device, then uncheck the setting that has the Panasonic device update its time based on the embedded time signal, the time on the Panasonic device survives incoming calls and remains correct.  If I set the time manually and configure the Panasonic device to update based on the embedded time signal, the time will change when a call comes in and will become incorrect by one hour.  This symptom began immediately after last weekend's power outage.  Prior to that the time (since I switched my land lines from AT&T to Comcast in 2015) the phones' time would always remain correct including switching from daylight savings and back twice a year.  I am convinced the problem is the modem or upstream but have no means of investigating further.  Thanks.

New Member

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9 Messages

Forgot to mention I also have a HP all-in-one plugged into one of the four incoming phone lines.  Time on that machine is also going out of whack when a call comes in.  Definitely an issue with embedded time signal.

Official Employee

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52 Messages

5 days ago

@user_c6b714, I will need to pull up your account to investigate this further. If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you. To send a Direct Message, click on the chat icon in the top-right corner of the screen, next to the bell icon, and then type or select "Xfinity Support" to initiate a direct message. How to: Direct Message Within The Forum.

New Member

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9 Messages

Direct message search for "Xfinity Support" doesn't find that as a valid "to" address.  Finds "Support".  Is that where you want me to send details?  Thanks.

Official Employee

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48 Messages

That is correct, if you select "Xfinity Support" from the drop-down list. Type your message in the text area near the bottom of the window. Press Enter to send your message

New Member

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9 Messages

"Xfinity Support" does not appear on the drop-down list.  Many entries that include "support" but none that include "Xfinity".

Official Employee

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48 Messages

You can follow the instructions on the 

How to: Direct messaging within the forum | Xfinity Community Forum site, or use the Business support option. 

New Member

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9 Messages

I've been following the steps provided.  At the "To:" prompt typing "Xfinity Support" produces a drop-down with lots of entries mentioning "support" but does not include the official "Xfinity Support" handle.