AASTRA DT4x2 for BusinessPhone User Guide EN - Manual (Page 45)

45 BusinessPhone – Cordless DT412/DT422/DT432
During Calls
Conference
You have an ongoing conversation and you want to establish a
telephone conference.
R
Press (see display).
The first call is put on hold. Dial tone. å
Call the third party.
R
3
Press to establish a three party conference.
Now you have established a three party conference. To indicate the
conference, all conference members will hear a periodical
conference tone.
Repeat the procedure to include other persons into the
Conference.
In this way, you can include up to six parties in a conversation. How
many of them can be external callers depends on the programming
of the system. æ
End the call to leave the Conference.
Answer a conference call
A Conference call is indicated by a different signal compared to
normal calls and a text message. The Conference call must be
answered within a pre-set time (default 30 seconds). A normal call
in progress has higher priority, but if the normal call is ended before
the pre-set time, the conference call indication starts and the call
can be answered. æ
Press to answer the conference call.
You are connected to the conference.
Put a call on hold
You have an ongoing conversation. Now you want to put the
ongoing call on hold for a short while.
R Press (see display).
The call is put on hold. Dial tone.
R Press again to resume the call (see display).