AASTRA 6739i for OpenCom 1000 User Guide EN - Manual (Page 6)

Aastra 6739i SIP Telephone
2
Up to three key extensions can be connected: three key extensions of either the
M670i type or three of the M675i type. Key extensions cannot be combined on the
OpenCom 1000 communications system.
Key Description
The following table explains the 14 dedicated keys of the Aastra 6739i.
Aastra M670i Aastra M675i
Aastra 6739i
Keys Key Description and Function
Options key: accesses the Options List menu card
(please refer to Settings via the Options Menu
starting on page 27).
Caller key: opens the list of missed calls (please refer
to Caller Lists starting on page 12).
Phone book key: opens the phone book of the
OpenCom 1000 communications system (please
refer to Phone book starting on page 14).
Services key: activates/deactivates call protection
(DND: Do Not Disturb).
Conference key: establishes a conference
Transfer key: transfers the current call to another
subscriber