Our phone just stopped showing caller ID one day. No just shows "external" and no number
This is just a regular home BT connection used at home. No PABX or routers involved. Worked well for about a year. There are four phones in the house.
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Answers & Comments
It is my understanding the caller ID feature comes as part of your telephone service and your phone only displays what comes through. So either you changed the subscription which means you dropped the Caller ID feature or your BT plan does not have it anymore. Best to call BT and confirm.