Ericsson BS120 - Manual (Page 43)

Extra features
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4. Enter one digit to switch the PIN security on or
off:
‘0’ to switch security off
‘1’ to switch security on
5. Press and then press .
The security setting for programming has now
changed.
Reading the IPEI code
The IPEI code is a unique code which has been assigned to
the cordless phone and is the warranty number of the cordless
phone as well.
The IPEI code can be found on the packaging under
Warranty No. Portable (IPEI) and you can also
request this number using the cordless phone.
1. Press and then press for 2 seconds.
If the programming security is on four dashes are
displayed. If so enter the PIN code for the cordless
phone (default is 0000).
2. Two dashes are displayed.
3. Enter 15.
The two parts of the IPEI code are displayed for
one second each.
4. Press and then press .