Operation Manual
Table Of Contents
- Copyright
- Warranty
- Declaration of conformity
- Safety instructions
- Disposal of the product
- Hardware Components
- User Interfaces
- User and Administrator Mode
- Documentation
- Phone Installation
- Phone Initialization
- Registration
- Idle Screen
- Phone User Interface
- Web User Interface
- General Configuration Tasks
- Display Configuration Tasks
- Audio Configuration Tasks
- SIP Identity Configuration Tasks
- Function Key Configuration Tasks
- Maintenance Tasks
- Outgoing Calls
- Extension (SIP identity) for Outgoing Calls
- Making Calls
- Auto Completion (Number Guessing)
- Call Completion
- Call Termination
- Redial
- Call Indication
- Accepting Incoming Calls
- Call Waiting
- Denying Incoming Calls
- Denying Incoming Calls Automatically
- DND (Do Not Disturb) Mode
- Call Forwarding
- Audio Operation Modes
- Mute / Unmute
- Multiple Speaker Mode
- Hold and Resume
- Call Transfer
- Conference
- Call Recording
- Logoff All Users (Extensions/SIP Identities)
- Logon New User (Extension/SIP Identity)
- Access
- Access
- Availability
- Access
- Changing the Presence State
- Contact Presence
- Acoustical Indication
- Visual Indication
- Retrieve New Messages
- Busy Lamp Field (BLF) feature
- “Calls” List
- Call Pickup

User Manual - English
87
Appendix
Mapping of Context-Sensitive Function Keys
The following table gives an overview of the individual functions and its relation to the text or
symbol displayed above each key as mentioned on page 8.
Functionality mapped to context-
sensitive function keys S1 to S4
ip820c Text ip830c Icon ip840c Text
Idle screen (see page 19 / 88)
Calls up Registration List (default S1)
Reg
Reg
Calls up Call History Lists (default S2)
CHist
CHist
Calls up Phone Directory (default S3)
Dir
Dir
Speed Dial Prompt (default S4)
Speed
Speed
Calls up Presence State List (optional)
Presence
Presence
Calls up Contact List (optional)
-
Contacts
Calls up Extension Monitoring List (optional)
- Calls Calls
Retrieves new voice mail messages
VMail
VMail
Basic navigation
Cancels or aborts actions
Cancel
Cancel
Confirms actions
Ok
Ok
Scrolls down in a list
-
Down
Scroll up in a list
-
Up
Moves the Cursor to the right
-
<<
Moves the Cursor to the left
Next
>>
Moves to Next Item
Next
>>
“Edit” / “Enter number” screen
Deletes the last character
Clear
Clear
Deletes left character
C Å
C <<
Input Mode numeric lower case
1a
1>>a
Input Mode lower case upper case
aA
a>>A
Input Mode upper case numeric
A1
A>>1
“Ringing”, “Calling”, “Connected”, “Holding”, “Transfer”, “Conference” screens
Denies an incoming call
Deny
Deny
Denies incoming calls automatically
DenyAll
DenyAll
Places a call on hold / Resumes a call
R
R
Establishes a three-party conference
Cnf.On
Cnf.On
Disconnects a three-party conference
Cnf.Off
Cnf.Off
Mutes the active microphone
Mute Mute Mute
Unmutes the active microphone
Unmute Unmute Unmute
Turns on handsfree mode
-
SpOn
Turns off handsfree mode
-
SpOff
Turns on casing speaker simultaneously
+Spkr +Spkr +Spkr
Turns off casing speaker
-Spkr -Spkr -Spkr