LG CU500 - Manual (Page 77)

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Settings
6. When a connection is made, use the TTY equipment
to type in and send a text message or send a voice
message.
7. The voice or text message from the receiver end
appears on the TTY equipment display.
Send DTMF Tones (Menu 9.5.9)
You can send the DTMF (dual tone multi-frequency)
tones of the number on the display during a call.
This option is helpful for entering a password or
account number when you call an automated system,
like a banking service.
Security Menu 9.6
Various codes and passwords are used to protect the
features and settings of your phone. They are
described in the following sections.
Lock Handset (Menu 9.6.1)
You can use a security code to avoid unauthorized use
of the phone.
If you set phone lock to When Power On, the phone
will request a security code whenever you switch the
phone on. If you set the phone lock to When SmartChip
Changed, your phone will request a security code only
when you change your SmartChip. If you set the phone
lock to Immediately, your phone will lock immediately.
PIN Code Request (Menu 9.6.2)
When the PIN code request feature is set to ‘On’, you
must enter your PIN each time you switch the phone
on. Consequently, any person who does not have your
PIN cannot use your phone without your approval.
n
Note
Before setting the PIN code request feature to Off, you must
enter your PIN
The following [Options] are available:
]
On: You must enter the PIN each time the phone is
switched on.
]
Off: The phone connects directly to the network
when you switch it on.
Fixed Dial Number (Menu 9.6.3)
This allows you to restrict your outgoing calls to
selected phone numbers, if this function is supported
by your SmartChip. The PIN2 code is required.