Gigaset 1054isdn User Instructions page 187

10.06.1999
Quick Start Guide - Comfort Mobile Unit
Three way conference (page 117)
With two active calls press the dialog key to link both calls to a
three way conference.
„Anonymous call" , (Suppress the display of your call number for your partner, Pg. 106)
Before dialing call number
press menu key
KB-
CONF.
ß
Service
Select and confirm
Gigaset 1054 isdn, GBR: A30853-X200-B101-51-7619
Anonymous call
OK
Select and confirm.
OK
183