Sony SPP-1000 - Manual (Page 17)

Setting the digital security code
The first time you charge the battery pack, a random security code is
automatically assigned between the base unit and the cordless
handset.
Only a handset which has this unique security code can make calls
through the base unit. This system prevents the possibility of other
cordless telephone handsets making calls through your base unit.
You normally do not need to change the security code. However, in
the unlikely event that you suspect that another cordless phone uses
the same security code, you can manually change the code. Pick up
the cordless handset from the base unit, and proceed as follows:
I
•
This procedure will change the
code in both the base unit and
the cordless handset.
The code can be changed as often
as desired.
I
m
You will hear flve short error
beeps if you press a number
other than 001 to 399 (such as
400). In this case, start over again.
I
m
If the battery pack in the cordless
handset is completely discharged,
or is removed from the handset
for more than several seconds,
the digital security code stored
will be lost. If this happens, you
must set the code again.
1 Press PGM.
The TALK lamp flashes.
2
Press <D.
You hear a confirmation beep.
3
Press any three^igit number between 001 and
399 by using the dialing keys.
4 Press PGM.
You hear a long confirmation beep, and the TALK lamp
goes out.
5
Immediately replace the cordless handset on the
base unit.
You hear a confirmation beep.
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