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haven’t designated the speed dial function for that key, then you can't be successful for the call.
Sending DTMF signal
When you have set up the DTMF signal sending function, if you press the digit key and * and # key of the
keypad during the period of conversation, it will be sent out in the form of DTMF signal to the other party. If
you don't start up this function, you can't carry out the extension number calling, etc. functions probably.
Call Hold
If you have applied for the value adding of call waiting, the following function menu may appear when
you click an entry during conversation
：
Hold: Temporarily suspend the current conversation, but the conversation channel still under connection.
End: End the current connection.
New conversation: Enter the dial interface, and make another call.
Phonebook: You can enter a phonebook directory.
Information: You can enter messages directory.
Record
：
You can record the current calling contents.
Background tone
：
Enable or disable the background tone.
Mute/resume: You can switch on/off microphone.
Dual-tone multi-frequency, DTMF: You can set up whether to send out a DTMF signal.
Note
：
Some menu entries just appear under the specific condition, or they need support from the local
network, such as: ―Hold‖ and ―New conversation‖, etc., for detail, please consult the network supplier
.
Non-response event
When the cell phone has new unread messages and missed call etc. events, the cell phone will have the
corresponding picture or icon prompt, please search these messages in time.
Connecting to voice mailbox
Your cell phone allows you to divert the incoming call to the voice mailbox, then, you will receive a
