Adding handset to your telephone base
Adding and registering handsets
Before using a new TL86009 handset, you must register it with the AT&T TL86109 telephone system (purchased separately). The AT&T TL86109 telephone system can accommodate up to 12 handsets.
The handset provided with the TL86109 comes registered as HANDSET. You can register up to 11 additional handsets to the telephone base, and they will be assigned numbers in the order they are registered (HANDSET 2, HANDSET 3, HANDSET 4 and so on). Your first handset is then renamed as HANDSET 1.
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