Enter a phone number. (The Auto-Dial feature might pop up to suggest matching phone numbers from your Placed Calls log.)
Click the Navigation button to display phone numbers from your Placed Calls log.
Next, click the phone number appearance on your phone screen to dial. Or do one of the these actions to go off-hook and dial the highlighted phone number:
or 
(a line button)
Drag a number from any Windows program, drop it anywhere on the Cisco IP Communicator interface, and click Dial or the Enter key on your keyboard.
Drag a vCard and drop it anywhere on the Cisco IP Communicator interface. If the vCard contains more than one number, select the one you want from the pop-up window, and click Dial or the Enter key on your keyboard.
, 
, or 
(a line button), then enter a number.
Click Redial. By default, Redial uses your primary line. However, you can
open a secondary line and then click Redial. To open a line, click 
.
(a speed-dial button) before or after going off-hook.
Place a call when another call is active (using another line)
Click 
for the new line. The call on the first line will be placed on hold
automatically.
Place a call when another call is active (using the same line)
Click Hold, then click New Call. You can now dial, redial, or speed dial a number. Or you can continue talking on the active call while preparing to dial from a call log or directory. (See the next two rows in this table for details.)
Choose 
> Missed Calls, Received Calls, or Placed Calls. To dial,
click the listing or scroll to it and go off-hook.
If you want to dial from a call log while on another active call, scroll to a call record and click Dial or the Enter key on your keyboard. Then choose a menu item to handle the original call:
Choose 
> Corporate Directory (exact name can vary). Use your
keyboard to enter letters, then click Search. To dial, click the listing or
scroll to it and go off-hook.
If you want to dial from a directory while on an active call, scroll to a listing and click Dial or the Enter key on your keyboard. Then choose a menu item to handle the original call:
Use the Cisco WebDialer feature. Open a web browser and go to your
company directory. Click on a phone number in the directory. Click Dial or
the Enter key on your keyboard to place the call. Click Hangup to end the
call. See the Customizing Your Cisco IP Phone on the Web guide for more
details:
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/index.ht
m
If
is unlit, click it before or after dialing, re-dialing, or
speed-dialing a number.
If
is lit, click New Call, Redial, a speed dial button, or 
(a line
button). If necessary, enter a phone number and click Dial or the Enter
key on your keyboard. For more information, see the "Using a
Headset" topic
First make sure that an analog headset is not plugged in to the audio jacks
on your computer. Click New Call or 
and enter a phone number. Or,
use another method to place the call, then click 
to switch over to
speakerphone mode.
Many of the actions you take to dial a number will automatically trigger speakerphone mode. For more information, see the "Using Your Computer as a Speakerphone" topic.
Lift or otherwise enable the handset before or after dialing, re-dialing, or speed-dialing a number. See the "Using a USB Handset" topic.
for the line that you want to use.
Choose 
> PAB service (exact name might vary). (Depending on
configuration, you might be able to use Quick Search, as well. See the
"Using the Quick Search Feature" topic.)
Before you can use the PAB service, you must subscribe to it. For help, see the "Accessing Your User Options Web Pages" topic.
choose 
> Fast Dials (exact name might vary). To dial from a listing,
click it, or scroll to it and go off-hook.
For help subscribing to the Fast Dial service, see the "Accessing Your User Options Web Pages" topic.
Dial a number and enter a client matter code (CMC) or a forced authorization code (FAC) when prompted by a distinctive tone. Your system administrator will tell you if you need to enter CMC or FAC codes and can provide you with detailed instructions.
Click Hold. Next, click New Call. Then dial, redial, or speed dial a number. To return to the held call, click resume.
Enter the MLPP access number (provided by your system administrator) followed by the phone number.
Make sure that you are logged in to Extension Mobility (EM). Choose
> EM Service (exact name might vary), then use your keypad to
enter login information. If you are sharing a phone, you might need to log
in to EM before you can access certain features or complete a call.
EM is a special, non-default feature that your system administrator can
assign to phones and phone users. Refer to the Customizing Your
Cisco IP Phone on the Web:
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/index.ht
m
Check the phone screen display for this icon: 
If the icon is present, your Cisco IP Communicator is video-enabled and
can support Cisco VT Advantage. Contact your system administrator for
assistance and refer to the Cisco VT Advantage Quick Start Guide and
Cisco VT Advantage User Guide:
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/index.ht
m
Receive notification when a busy or ringing extension becomes available
Call the number and click CallBack while listening to the busy tone or ring sound. Hang up. When the extension becomes available, your phone will provide you with an audio and visual alert. (The call back to this number is not automatic; you must place the call.) CallBack is a special feature that your system administrator might configure for your phone. Note that CallBack will fail if the other party has call forwarding enabled.