KX-TG5521CAB, KX-TGA551RUB (serv.man2) - Panasonic Telephone Service Manual (repair manual). Page 21

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You can copy the handset phonebook to another (compatible Panasonic) handset. This will help to save the original phonebook
data which the customer has registered.
Available models: KX-TG5521
Refer to the following procedures.

• BS=Base Unit, HS=Handset
• If the max number of handsets are already registered to the base unit, a new handset cannot be registered.
• To register the handset, refer to Registering a Handset to a Base Unit in the Operating Instructions.
• To cancel the handset, refer to Deregistering a Handset in the Operating Instructions.
• To copy the handset phonebook, refer to Copying Phonebook Entries in the Operating Instructions.

BS

HS

Phonebook
data

Phonebook data is stored in a handset.

1. Register  HS (A) to BS (B).
    HS (A) is normal, therefore no need to copy the 
    phonebook data.

1. Register HS (A) to BS (B) as a handset no. 2.
2. Copy the phonebook data from HS (A) to HS (B).
3. Cancel the HS 2 (HS (A)).

BS (A)

HS (A)

BS (A)

BS (B)

Service center has
a normal BS (B).

HS (A)

Case 1: A base unit has a defect.
             (Replacing a base unit PCB etc...)

HS (A)

BS (B)

HS (B)

HS (A)

Case 2: A base unit has a defect.
             (Replacing both a base unit and a handset)

Service center has a normal
BS (B) and a normal HS (B).

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