4G Systems XSJack T3e - Manual (Page 21)

21
Acoustic Monitoring / Babyphone
Your XSJackT3 can monitor the audio level of its environment using a
connected telephone with a sensitive microphone or hands-free talking
function. If detected noises exceed a specific level, a configurable
number is dialled to be able to listen to the happenings at home when
being out. This function can be used as a baby phone, a burglary alarm
system or similar.
Before monitoring can be started, it must be configured using the code
L1. The sensitivity is a value between 0 and 5 where 1 means low sen-
sitivity (alarm is triggered only on heavy continued noise) and 5 means
high sensitivity (alarm is already triggered on slight short noise). It is
recommended to start with high sensitivity and to go down step by step
if you feel that alarm is triggered too often. Sensitivity 0 is a special
case where no alarm is triggered and only calls from the configured
telephone number are answered (see below).
Place the telephone receiver or the hands-free telephone in an appro-
priate position where the microphone is uncovered and near the poti-
ential source of noise. Monitoring can be started with code
L3. After
acknowledgement, you must stay in off-hook state all the time and
must not put down the telephone receiver on-hook again. When being
on-hook for 10 seconds, an alarm is triggered and the configured num-
ber will be called to indicate that the telephone is not actively monito-
ring anymore.
After monitoring has been started, the system is calibrated, which is
indicated by the signal strength LEDs flashing. It is essential to be quiet
in this phase. 30 seconds after calibration, the system will be finally
armed.
In armed state, the XSJackT3 will trigger an alarm and call the destina-
tion number if, depending on the configured sensitivity level, a specific
amount of noise is detected using the microphone of the connected
telephone. The called party can then listen to the action at home,