EST3 System Operation Manual 4.1
Chapter 4
3-FTCU operating instructions
Summary
This chapter provides a functional description of the controls
and indicators provided on the 3-FTCU Firefighter Telephone
Control Unit.
Content
Controls and indicators • 4.2
Operation • 4.4
Normal condition • 4.4
Trouble condition • 4.4
Answering incoming calls • 4.5
Disconnecting calls • 4.7
Paging by phone • 4.8
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