No phone numbers are displayed for incoming calls or outgoing calls
5251 Phenomenon
- A phone that connects to the modem router does not display the caller's phone number for incoming calls, or the caller's phone number is only visible on the phone's display for a very short time.
- A phone doesn't show which phone number the caller called.
Troubleshooting
Note:
Take the actions described here one at a time. After each action, check to see if the problem is resolved.
- Upgrade the firmware of the modem router
Refer to the FAQ to update your modem router to the latest firmware.
- Test different Analog or DECT phones
If only one phone has problem, please update the OS of the phone to the latest version or contact the phone support.
- Test the phone with another modem router
To eliminate the phone problem, replace the TP-Link modem router with another modem router. If the problem happens with another modem router, the issue may be caused by the phone.
Note:
Carry out this suggestion only if you have another modem router.
If the above steps can’t fix the problem, please contact TP-Link technical support team and provide us the following information.
- Model number, hardware version and firmware version of your TP-Link device;
How to find the hardware and firmware version of my TP-Link device
- Your internet service provider;
- The model number of your phone;
- The result of the above troubleshooting steps.
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