66250756-EN - V2.1 - 05/11/19
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4000 Series GSM Lite Audio Intercom - Technical Manual
4000 Series GSM Lite Audio Intercom
General Information
FIRMWARE REVISION
DATE
FIRMWARE VERSION
REVISION
10/05/16
LT3.0.0
Launch of 4811 GSM LITE.
01/07/16
LT3.0.1/2G , LT3.1.1/3G
Change to registry beeps. No beeps at automatic restart.
09/11/16
LT3.0.2/2G , LT3.1.2/3G
Firmware update to include: Added AT commands, up to 3
commands can be programmed using
1111ATn”command”?
, where
n = 1 - 3. Bug with D0 fixed. Change Telit modules CPCUMODE to
higher speed to overcome DTMF issues in Belgium. Fixed bug with
busy, engaged and No answer, where call’s didn’t end straight away
upon these events.
17/07/17
LT3.0.3/2G , LT3.1.3/3G
Firmware update to include:
ED#
function. PTE to work while unit is
still initialising. Moved balance check from ATH routine and placed
in call end routine. Add ATH send for every 8.5 minutes. Change
DTMF settings to improve DTMF decoding.
24/05/19
LT3.0.4/2G , LT3.1.4/3G
New major firmware update to include:
• Added SMS commands ready for new app.
• Added SMS force dial button command
1111BUT
.
• New commands –
STN
for programming both numbers in single SMS.
STR
for programming up to 5 dial to opens in a single SMS.
DET
for deleting a
DTO
number without knowing it’s
location.
27/09/19
LT3.0.5/2G , LT3.1.5/3G
Firmware update to fix double = = on
SDL
SMS reply. Fixed
BAL
issue where message wasn’t returned when querying via SMS.
Firmware update to include SMS
LLA
command to prevent a latched
output being unlatched by a DTO number or pressing lock elease
during a call. SMS unlatch can still be used.
FURTHER READING
Additional information regarding connection to mains supply voltage can be found in the following regulations (for the UK only):
• I.E.E. Wiring Regulations BS7671
For overseas customers it is recommended that you consult with the relevant governing body for the appropriate regulations and
standards of your country.