Lexus 2003 LS Owner's Manual page 505

Incoming Call Options
The Lexus Integrated Mobile Phone System includes an in-
coming call function that provides you with the option of holding
the present call, or terminating the first call in favor of a second
received call. With this function, you can deal with urgent mat-
ters, etc. The system notifies you of the newly received call
with a beep from the speaker.
When a second call is received in the system, you will have
few moments to decide whether you will continue with the cur-
rent call, or end it in favor of the second call. To transfer to the
second call, you need to press the hook key on the command
module once to terminate the first call, and then once again in
order to switch the second call.
If you determine not to transfer to the second call, no action is
needed. The second call will transfer automatically to your
voice mail system (if you have set up your voice mail service
with your Service Provider).
If you change over to the second received call, the original call
will be terminated from the system.
Telephone Security
All phone security issues are handled directly through the
phone.
Section 2 Using the Lexus Integrated Mobile Phone
System in Vehicles equipped without
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