User's Manual

42
<NOTE>
 Call-back option is disabled by default.
 If Auto-Answer Number is programmed:
If the Monitoring Center calls back within
the 5-minute Call-Back period using an
auto-answer number, the Control Panel will
pick up the call and instantly open up a two-
way communication with the caller.
If at least one Auto-Answer Number is
programmed, the Control Panel will only
answer calls from the Auto-Answer
Numbers.
 If no Auto-Answer Number is
programmed:
If the Monitoring Center calls back within
the 5-minute Call-Back period, the Control
Panel will automatically answer the call
after the 1
st
-2
nd
rings and wait for proper
Access Code (default is 8744) and the (#)
key entry within 12 seconds.
Upon receiving the correct Access Code
and the (#) key, CTC-1052-QT-DT35A will
then open a Full-Duplex Communication to
allow the caller to communicate directly.
 During a call-back communication,
Monitoring center can use the following
DTMF command to control the Control
Panel:
 Enter (1) to TALK ONLY
 Enter (2) to open TWO-WAY VOICE
COMMUNICATION
 Enter (3) to LISTEN-IN ONLY
 End a Call: enter (9) or (0) to HANG
UP or put the handset back into the
base cradle.
 Enter (7) to Speaker Volume Control
and then press (6) or (4) to increase
or decrease levels of speaker volume
in the “Two-Way” communication
mode(not in TALK ONLY mode).
 Enter (8) to Microphone Sensitivity
Control and then press (6) or (4) to
increase or decrease levels of
microphone sensitivity in the “Two-
Way” communication mode.
 If the speaker volume and microphone
sensitivity was adjusted, the adjusted
value will be kept for the next
communication.
 Press any DTMF key,
except the
designated “hang-up” keys to reset
the communication time to its preset
duration. Please note that when a
particular DTMF key is pressed, its
designed shortcut function will be
executed & the communication time
will be extended at the same time.
 Pressing the Reset Button can also
terminate the call.
 The Control Panel will only allow one
call per call-back mode. Terminating a
call during call-back period will
therefore terminate the call-back
mode.
<NOTE>
 If you wish to enable a designed
shortcut function, please press the
DTMF keys for over 1 second to enable
the function you desire.
5.2.3. Speech Reporting Method
 If Speech Reporting Method is selected,
after dialing, CTC-1052-QT-DT35A will
open a two-way voice communication
between the Call Recipient and CTC-1052-
QT-DT35A for 1-10 minutes (set by
Command #46).
 At 20 & 10 seconds before the time period
expires, CTC-1052-QT-DT35A will emit two
beeps via the telephone handset to alert
the user.
 If the Call Recipient needs more talk time,
they can press any keys except 9 or 0 on
their phone set to reset the communication
time to its preset duration.
 The Monitoring Center can remotely control
CTC-1052-QT-DT35A by the DTMF
commands below:
 Enter (1) to TALK ONLY
 Enter (2) to open TWO-WAY VOICE
COMMUNICATION
 Enter (3) to LISTEN-IN ONLY
 Enter (9) or (0) to end the call
 Enter (7) to Speaker Volume Control
and then press (6) or (4) to increase
or decrease levels of speaker volume
in the “Two-Way” communication
mode (not in TALK ONLY mode).
 Enter (8) to Microphone Sensitivity
Control and then press (6) or (4) to
increase or decrease levels of
microphone sensitivity in the “Two-