AT&T 7406 Plus - Terminal Busy Indication

To change from
1
Press  Speaker-Reset Spkr 
handset to
●
Green light goes on next to  Speaker-Reset Spkr 
speakerphone
2
Hang up handset
To end a call
1
Press  Speaker-Reset Spkr  again to hang up
●
Green light next to  Speaker-Reset Spkr  goes off
Terminal Busy Indication
To see if the specified
1
Look at the Terminal Busy Indication status light
voice terminal is busy
●
The light will be on if the terminal is busy and off if
or idle
the terminal is idle
30