Siemens OptiPoint 410 - Connect the two other parties using the menu; Connect the two other parties by hanging up

Operating the Telephone with the Display
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Step by Step
or Connect the two other parties using the menu
Prerequisite: "Allow Join in conference" was activated
by the service personnel.
> : Select and confirm. The display shows "Transferring"
and then "Calls joined". You can start a new call.
or Connect the two other parties by hanging up
Prerequisite: "Allow Join in conference" was activated
by the service personnel.
t Replace the handset or press the loudspeaker key (in in
speakerphone mode). The display shows "Tr a n s f e r r i n g "
and then "Calls joined". You can start a new call.
Join? >