Troubleshooting - The 2nd caller’s information is not displayed during an outside call.

In order to use Caller ID, call waiting, or Call Waiting Caller ID (CWID) also called Visual Call Waiting , you must first contact your phone service provider and subscribe to the desired service.   After subscribing, you may need to contact your phone service provider again to activate this specific service, even if you already subscribed to both Caller ID and Call Waiting with Caller ID (CWID) or Visual Call Waiting services.