Cisco VoIP - Making calls from a Cisco desktop telephone (7841/8851)
Make a call with handset
Lift handset and dial the number using the VoIP dialing patterns outlined here: Cisco VoIP - Dialing patterns
Make a call with the speakerphone
Use your speakerphone for hands-free calling. Keep in mind that your coworkers might be able to hear your call too.
Procedure
Step 1 Enter a number using the keypad.
Step 2 Press Speakerphone.
Make a call with a headset (Cisco Model 8851 only)
Use your headset for hands-free calling that won't disturb your coworker and gives you some privacy. Please note that DoIT only supports the Jabra headsets purchased through the Tech Store or MDS. Headsets only work with Cisco 8851. There are no supported headsets for the Cisco 7841.
Procedure
Step 1 Plug in a headset into USB jack on the side of the phone or connect via Bluetooth
Step 2 Enter a number using the keypad.
Step 3 Press Headset.
Redial a Number
You can call the most recently dialed phone number.
Procedure
Step 1 (Optional) Select a line.
Step 2 Press Redial.