Basic Operation
Handset Operation
Making Calls
•Press ON (or SPEAKER to use the Handset Speakerphone feature). Dial the phone
number.
Dial the phone number first, then press ON (or SPEAKER).
• Press OFF to end your call.
Answering Calls
• Press ON, SPEAKER or any dialing keys.
• Press OFF to end your call.
Adjust the HandsetVolume
• The volume control is on the left edge of the Handset. During a call, press 
or key to adjust the listening volume to a comfortable level. When you reach the maximum or minimum setting, a
NOTE: The procedure is the same for the Handset earpiece, Speakerphone and Headset.
Flash Function
• You can use your ip 5850 with services such as Call Waiting. When you receive a
NOTE: Use ON/FLASH to access other phone company subscriber services, as described by your provider.
Redial Function
•Press REDIAL/PAUSE to display the last telephone number dialed from the Handset
(up to 32 digits). Use 
or 
to scroll through the 5 previously dialed numbers. When the beginning or the end of the redial list is reached, a
•Pressing OFF will exit the redial review list.
•When the desired number is reached, press ON or SPEAKER to dial.
•When the desired entry displays, press DELETE to delete it. A confirmation tone will sound.
NOTE: If the redial memory is empty, and REDIAL is pressed, a
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