VTech DS3111-3 - Manual (Page 30)

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Advanced operation
Advanced operation
About caller ID
If you subscribe to caller ID service from your local telephone company, this feature
displays the name and telephone number of the caller before answering a call
(even when on another call). The caller ID features of this product will work only if
you subscribe to caller ID service and both you and the caller are in areas offering
caller ID service, and if both telephone companies use compatible equipment.
Contact your local telephone company if:
• you have both caller ID and call waiting, but as separate services (you may need
combined service),
• you have only caller ID service, or only call waiting service,
• you do not subscribe to caller ID or call waiting services but wish to subscribe.
There may be fees for these services, and they may not be available in all areas.
This product can be used without subscribing to either caller ID or combined caller
ID with call waiting service, although the caller ID features of this product will not
function.