Toa VS-900 - Manual (Page 62)

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CHAPTER 3. CONVENIENT FUNCTIONS
Step 2. The called master stations can enter the conference by lifting the handset.
Step 3. The conference is terminated when the originating station either replaces the handset or presses the
[C] key.
Stations other than the conference originating station can exit the conference by replacing the
handset or pressing the [C] key.
[Function details]
When a conference trunk is used for Emergency Conference by other members, a trunk busy tone is sounded
at the originating station and the originating station is restored to the normal standby mode.
No. 90
No. 92 No. 93
No. 91
Emergency conference entered.
No. 90
or
C