User's Manual
11 
function  is  enabled),  CTC-1052-QT-DT35A 
will  auto-answer  the  call  after  the  1st-2nd 
ring  and  waits  for  Access  Code  (default  is 
8744)  and  the  (#)  key  entry  within  15 
seconds. 
When the correct Access Code is received, 
CTC-1052-QT-DT35A will then open a Full-
Duplex Communication to allow the Call 
Recipient to speak to CTC-1052-QT-DT35A 
directly. 
You can use DTMF command to switch the 
communicating method. Please refer to 
section 4.2. Alarm Activation. 
<NOTE> 
  The  Access  Code  must  be  entered 
within  15  seconds.  Otherwise,  CTC-
1052-QT-DT35A will disconnect the call 
automatically. 
  To  terminate  the  call,  press  DTMF  (9), 
(0)  or  Reset  Button  on  1052-QT-
DT35A. 
  If  the  5-minute  waiting  period  is  up, 
CTC-1052-QT-DT35A will automatically 
exit this waiting mode and return to idle 
mode. 
Command 40 
Set Access Code 
 
The  Access  Code  is  used  to  enter 
Programming  Menu  (locally  or  remotely), 
and the Call-Back Function. 
 
It  consists  of  4  digits  and  has  been  set  to 
(8744)  as  factory  default.    Before  you  set 
your own Access Code,  (8744)  must  be 
keyed in. 
 
To set a new Access code; enter the 
desired  (4-digit  number) in Function 
Selection. 
Command 41 
Auto Answer for Remote Programming 
 
CTC-1052-QT-DT35A  can  be  programmed 
to auto answer incoming phone calls after a 
pre-set  number  of  rings  have  been 
reached.  The  number  of  rings  range  from 
(00) (no auto answer) to (32) rings. 
Function Selection Result 
(00)  OFF 
(01) - (32)  ON 
 
Factory Default is (00) Rings. 
<NOTE> 
  When  (00),  it  means  CTC-1052-QT-
DT35A  cannot  auto-answer  the  call  by 
ring  count.  If  you  want  to  do  Remote 
programming,  please  follow  the 
Remote  Programming  method 
described in 4. System Confguration, 
4.1. Remote Programming Mode, 
4.1.2. Dial in Twice.
Command 42 
Guard Time Delay 
This command is designed for any 
compatible sensor, except Fall Sensor 
(fall detection). 
 
Guard  Time  Delay  time  is  a  time  period 
programmed  to  delay  alarm  reporting.  If  a 
false  alarm  is  raised,  it  can  be  cancelled 
within this Guard Time Delay time. 
 
The  programmable  delay  time  range  from 
(00) (instant reporting) to (99) seconds. 
 
Emergency  alarms  activated  by  Smoke 
Detectors  (SD),  Carbon  Monoxide 
Detectors  (CO),  Carbon  Dioxide  Detector 
(CO2),  Temperature  Sensor  (TS),  and 
Water  Sensors  (WS)  do  not  have  Guard 
Time  Delay  and  will  be  reported 
immediately. 
Function Selection Result 
(00)  INSTANT REPORTING
(01) - (99)  DELAY 
 
Alarm  activated  by  pressing  a  button 
cannot be cancelled after the Guard Time is 
elapsed.
<NOTE> 
  The  Guard  Time  Delay  time  from 
pressing  the  Active  Button  on  a  Fall 
sensor is determined by Command #42 
instead of Command #66. 
  The  Guard  Time  Delay  from  a  fall 
detection  (of  a  Fall  Sensor)  is  set  by 
Command #66. 










