GAI-Tronics CB193-001 Call Boxes - Manual (Page 27)

Pub.: 43004-031E
Model CB193-xxx, CB194-xxx, and CB195-xxx RF Call Boxes Page 26 of 52
f:\radio products-current release\43004\43004-031e\43004-031e.doc
11/12
Transmit Channel Busy; Call Completed
Step Action Response
1 User presses and releases PTT
button Call Box wakes from low-power sleep mode, checks transmit
channel activity, and status lamp slowly flashes red to
indicate unit is operating.
2 Transmit channel activity is
detected The Call Box status lamp rapidly flashes red for a pre-
programmed amount of time before again checking transmit
channel activity.
3 Transmit channel becomes
available Call Box proceeds as in steps 2 through 9 in “Normal Use”
section.
Transmit Channel Busy; Call Aborted
Step Action Response
1 User presses and releases PTT
button Call Box wakes from low-power sleep mode, checks transmit
channel activity and status lamp slowly flashes red to indicate
unit is operating.
2 Transmit channel activity
detected Call Box status lamp rapidly flashes red indicating a busy
channel (wait).
3 Channel activity detected past
pre-programmed time duration The status lamp flashes red, and the call box emits three tones
to the speaker. Call Box terminates the call by powering
down the radio and audio circuitry. The status light is off and
the unit returns to its low-power sleep mode.