Bosch Integral TM13 Operating Instructions Manual page 52

During a call
You can drop out of the conference and simultaneously connect both other subscri-
bers to each other.
A conference can be conducted with external as well as internal subscribers.
Ending a conference
Connecting conference participants with each other
52
Several calls simultaneously A
You are holding a conference with two call
partners.
Press the "Release" key.
The conference is then ended.
Replace the handset.
You are then cut out of the conference.
Both other conference participants are con-
nected to each other.