This service enables you to add one or two (where available) additional telephone numbers to your current phone number without adding additional line equipment. Distinctive ringing patterns enable you to determine who the call is for. Although you will have up to two additional telephone numbers, just one line and only one conversation can be held at a time. You are entitled to a listing in the white pages of the telephone directory for each Teen Service number.
If you have Call Waiting, you will also receive Distinctive Call Waiting tones.
Primary Directory Number (PDN): the main phone number will ring as normal.
Secondary Directory Number (SDN): the phone number added through Teen Service will have a distinctive ring.