Samsung SGH-X640 Manual page 19

Call functions
Note: You cannot activate Voiceclarity when you use
the loudspeaker or the handsfree car kit.
Putting a call on hold
You can place a call on hold whenever you want.
You can make another call while you have a call in
progress if this service is supported by your
network. Of these two calls, one is active and the
other is on hold, and you can switch between the
two.
To place a call on hold, simply press the option key
and select the Hold option. You can reactivate the
call whenever you want by pressing Retrie. soft
key.
Switching the microphone off (Mute)
You can temporarily switch your phone's
microphone off so that the person with whom you
are speaking cannot hear you.
Example: You may wish to say something to
another person in the room, but do not
want the person on the phone to hear you.
1. Press the Options soft key.
2. When Mute highlights, press the Select soft
key.
The Mute icon ( ) appears on the bottom line
of the display and your correspondent can no
longer hear you.
To switch the microphone back on:
1. Press the Options soft key.
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2. When Unmute highlights, press the Select soft
key.
The Mute icon disappears and your
correspondent can once again hear you.
Muting/Sending key tones
You can turn the key tones off or on during a call.
When the Mute keys option is selected, your phone
does not transmit key tones. This allows you to
press keys without hearing annoying key tones
during a call.
To communicate with answering machines or
computerised telephone systems, the Send keys
option must be selected.
Searching for a number in Phonebook
You can search for a number in your Phonebook
during a call.
1. Press the Options soft key.
2. If necessary, press the Up or Down key to
highlight the Phonebook option. Press the
Select soft key.
3. Select the Find name option and press the
Select soft key.
The Phonebook entries are listed.
4. Enter the first few letters of the name that you
want to find. The Phonebook entries will be
listed, starting with the first entry matching your
input.
Call functions
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