Siemens Gigaset M2 Professional Operating Manual page 90

Conducting calls – with multiple users
Step by Step
> <
PICKUP
> <
CONFERENCE
> <
TOGGLE
> <
RETURN
80
Accepting a second call and adding it to the
conference
If you receive a second call during the conference (the
second call function is activated), you can add this user
to the conference.
An alerting tone is audible.
[
Select and confirm. You are connected to the second
caller. The conference is placed on hold.
either:
[
Select and confirm to add the second caller to the con-
ference.
or:
[
Toggle between the conference and the second call.
or:
[
Select and confirm to release the second call and return
to the conference.