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GSM DOOR INTERCOM
SYSTEM

TECHNICAL MANUAL
EDITION 1.2.1

PAGE 2 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

CONTENTS
Manual introduction
System introduction
Precautionary advice
System components
Intercom module
Expansion button modules
VX800 Codelock
Door panel mounting frames
Power supply
Wiring diagrams
Accessories wiring guide
Cable guide
Installation overview
Panel care
Testing, power up and reset
Programming
Programming by text message
Programming by dial in
System operation
User commands
Checking the balance of a Pay As You Go SIM
Understanding the signal strength test
Dial in priority
Call button record keeping table
Dial in access control record keeping table
Understanding the beeps
Troubleshooting guide
Conformance information
Software updates

PAGE 3 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

PAGE
4
4
5
6 – 13
6–7
8-9
10 - 12
13
13
14
15
16
16
16
17
18 – 27
18 – 24
25 – 27
28 - 29
28
29
29
29
30
30 - 31
32
33
34
35

VER1.2.1

MANUAL INTRODUCTION
The information in this manual is intended as an installation and commissioning guide for
the GSM door intercom system. This manual should be read carefully before the
installation commences. Any damage caused to the equipment due to faulty installations
where the information in this manual has not been followed is not the responsibility of
Videx Security Ltd.
VIDEX run free training courses for engineers who have not installed this system before. Technical
help is also available on 0191 224 3174 during office hours or via e-mail tech@videx-security.com.

SYSTEM INTRODUCTION
The system is designed to work on the same technology as mobile phones. It enables a
call to be made from an entry point (Door, gate etc), to any telephone number (mobile or
land line). Up to ten call buttons can be connected to the door panel, each able to call two
telephone numbers (If the first is busy or not answered, the call can be diverted to the
second). Features of the system include a dry contact relay output, an open collector
auxiliary output, push to exit input and switched 0V auxiliary input. Programming of the
telephone numbers and additional features can be carried out via text messaging or dial in.
An additional access control feature is also available on the system allowing a number of
callers to open the gate/door simply by dialling the telephone number of the intercom panel
(The intercom panel will not answer these calls but will activate the relay output).
A SIM card is required for this product but not supplied. It is recommended to choose the
SIM card which has the best coverage for the area in which the intercom panel will be
installed. Both contract and ‘Pay as you go’ SIM cards can be used but if using a ‘Pay as
you go’ we would recommend setting up an automatic top up to avoid running short on
credit and loosing the use of the intercom panel. Alternatively if you already have a
contract mobile phone it should be possible to get a second SIM card and telephone
number on the existing account. For more information contact the SIM card providers or
visit their web sites.
When registering a new SIM you may be asked for the IMEI number. This is the unique
serial number of the GSM intercom and can be found on the rear of the module as shown
in the picture below:-

IMEI Number

PAGE 4 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

PRECAUTIONARY ADVICE
o When mounting the GSM antenna, choose a location which is away from human
interaction and away from the intercom panel. Route the GSM antenna cable from
the intercom panel so that it is separate from the power supply cables and
microphone wire.
o Always ensure the power is off to the intercom panel before inserting or removing
the SIM card.
o New SIM cards will need registering before they can be used. Full details of how
this is done can normally be found in the SIM card pack. It will normally require that
the SIM card is inserted into a mobile phone, a number dialled and instructions
followed. While the SIM is in the mobile phone it would be a good time to disable
any PIN codes, call diverts, ring back and disable features such as voicemail and
text alerts. Details of how to do this can be found on the SIM card provider’s web
site or by calling their customer services. Please use one of the following SIM card
providers (Vodafone, TMobile, O2 or Orange). We do not recommend using 3 at
this present time.
o To be able to receive text messages from the intercom panel, the SIM card will
require an SMS service centre number. This is normally preinstalled on new SIM
cards but if you are having trouble receiving SMS messages you will need to
confirm this by inserting the SIM card into a telephone and using the telephones
menu options to check it. If a number is not programmed then it should be
programmed while in the telephone (The number can be obtained from the service
provider).
o Voicemail and text alerts must be switched off on the SIM card when using the dial
in to release the door/gate feature. For Vodafone and O2 this can be done while the
SIM card is in the intercom panel. For Orange and T-Mobile the SIM card must be
remove and put into a mobile phone.
o When storing the intercom panel’s telephone number in your own mobile phone
avoid using an obvious name such as ‘Front Door, or ‘My Gate’ as this would make
it easy to decipher if your phone was lost or stolen.
o The PIN request feature must be disabled on the SIM card before using it in the
Intercom panel. It is likely on a new SIM card that it will not be enabled but if it is, it
will prevent the system from working at all.
o This product may not be suitable for installation in hospitals, health care facilities or
in the presence of flammable gases or liquids. Seek advice and authorisation before
installing this product in these locations.

IMPORTANT NOTE ABOUT SIM CARD
When using a pay monthly SIM card you must ask the service provider to put a spend limit
on the account (Vodafone call this service ‘spend checker’). This is to safeguard against
possible problems which could result in a large phone bill at the end of the month. All
providers offer this service. You will need to either ring them or e-mail them to set this up.
Automatic top ups should also have a monthly limit.

PAGE 5 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

SYSTEM COMPONENTS
A system comprises of an intercom panel, power supply, SIM card and antenna. The
intercom panel is of modular design allowing it to be customised to the installation
requirements by including proximity access control, coded access or bioaccess and also
including the correct number of call buttons.
INTERCOM MODULE
The intercom panel can include any of the modules from the 4000 Series range and uses
the standard 4000 series surface and flush mounting frames. The GSM amplifier module is
however essential and includes all the GSM communication electronics, SIM card
(Supplied seperately) and connections. The intercom module is available in a 0 button, 1
button, 2 button, & 4 button configuration as shown below along with their part numbers.

Art.4810-0

Art.4810-1

Art.4810-2

Art.4810-1D

Art.4810-2D

JUMPER SETTINGS
There are 3 jumpers located on the back of the module. JP2 & JP3 can be used to alter
the volume from the Door Intercom speaker. JP1 is set to indicate the type of power supply
used to power the system.
POWER SUPPLY SELECTION
JP1
A

JP2
A

JP3
A

JP1
A

POWER SUPPLY TYPE
12-14.0Vdc Only

15-24Vdc or 13Vac Only

Note: PSU should be capable of supplying a current of 1A continuously
SPEAKER VOLUME
JP1
A

JP2
A

JP3
A

PAGE 6 of 36

JP2
B
A
B
A

JP3
B
B
A
A

GAIN (dB)
6
12
18
23.5

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

CONNECTION
12Vout
0V
e
d
c
b
a
C2
C1
PTE
AI
AO
C
NO
NC
Vin
Vin

DESCRIPTION
12Vdc output to power auxiliary relay
Ground connection
a – e are switched 0V inputs from the call buttons. The
common side of the call buttons connects to either C1 or
C2 (C1 with a-e for buttons 1-5, C2 with a-e for buttons
6-10)
Common 2 for call buttons 6-10 & AI(SMS sent)
Common 1 for call buttons 1-5 & PTE & AI(AO Output trigger)
Exit button input (Between PTE & C1) Triggers relay for programmed
time.
Auxiliary input (Between AI & C1 triggers AO, Between AI & C2
sends an SMS to the number stored in memory location 020
0V auxiliary output (Open collector) Max. 150mA
Common connection of dry contact relay
Relay contacts:
3A@24Vdc
Normally open connection of dry contact relay
3A@120Vac
Normally closed connection of dry contact relay
Power supply input (See JP1 table above for correct voltage)
Power supply input (See JP1 table above for correct voltage)

ANTENNA
The GSM antenna connects to the SMA female bulkhead on the rear of the module. A
GSM antenna with a SMA male connector should be used. A block style antenna is
supplied along with an L mounting bracket. Other types on GSM antenna can also be
used.
Note: An antenna must always be connected.
Note: Always route the GSM cable away from the microphone wires and the power
supply wires to avoid interference on the speech channels.

PAGE 7 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

EXTENSION BUTTON MODULES
The GSM intercom module will accept up to ten call buttons. Any of the standard 4000
series button modules can be used as shown below (Button 1 is in the bottom right corner
counting up).
10
9
8
7
6

5
4
3
2
1

Button connections to the GSM module are shown below. Note the positions of the
jumpers on the button modules (Note: For clarity power and other connections are not
shown below). Also take care when using additional button modules with intercom
modules which also have buttons. For example, an intercom module with one button
means the extension button modules must begin from button 2, an intercom module with 2
buttons means the extension module must begin from button 3.
Up to 5 call buttons using a
single row button module

PAGE 8 of 36

Up to 10 call buttons using a
double row button module

GSM DOOR INTERCOM TECHNICAL MANUAL

Up to 10 call buttons using the
single row button modules

VER1.2.1

Button module notes:
•
•
•

If the GSM module has 1 button, the additional button module buttons should be
addressed beginning with 2 (i.e. The first button of the button module should be
connected between C1 & b, the next between C1 & c etc)
If the GSM module has 2 buttons, the additional button module buttons should be
addressed beginning with 3 (i.e. The first button of the button module should be
connected between C1 & c, the next between C1 & d etc)
If the GSM module has 4 buttons, the additional button module buttons should be
addressed beginning with 5 (i.e. The first button of the button module should be
connected between C1 & e, the next between C2 & a etc)

6 BUTTON EXAMPLE

An explanation of the jumpers

When the jumper is in the top
position, one side of that button
is common to C1. When a
jumper is in the bottom position,
that button is completely isolated
from the others.
In this example, button 1-4 of the
module have a common side to
C1 and button 5 is fully isolated.

PAGE 9 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

CODELOCK MODULE (4800)
The 4800 codelock includes three relay outputs, two push to exit button inputs and
operates from a 12-24V ac/dc power supply. Up to 2 unique codes can be programmed,
each in the range of 4-8 digits. Relay time can be programmed from 01 – 99 seconds or
set to latching mode with a relay time of 00 (To latch, type in the code followed by Enter, to
unlatch, type in the code followed by clear).
Connection
+
C1
NO1
NC1
C2
NO2
NC2
C3
NO3
NC3
SW1
SW2

PAGE 10 of 36

Art.4800 Connections
Function
12-24V ac/dc power input
0V power input
Common connection of relay 1 (Dry contact)
Normally open connection of relay 1 (Dry contact)
Normally closed connection of relay 1 (Dry contact)
Common connection of relay 2 (Dry contact)
Normally open connection of relay 2 (Dry contact)
Normally closed connection of relay 2 (Dry contact)
Common connection of relay 3 (Dry contact)
Normally open connection of relay 3 (Dry contact)
Normally closed connection of relay 3 (Dry contact)
Push to exit input for relay 1 (Triggered by 0V)
Push to exit input for relay 2 (Triggered by 0V)

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

ART.4800 CODELOCK INITIAL PROGRAMMING
All programming is carried out using the codelock keypad. The programming menu is
protected by an engineer’s code. The factory default engineers code is 111111 (6x1). This
code can be changed to any four to eight digit code during the program but must be
different to the codes used to gain entry. Follow the flow chart to setup the system:Enter the engineers
code.
111111
Then press enter

The red LED will illuminate to acknowledge programming mode. If the red
LED does not illuminate check the master code is correct. If the master
code may have been changed from the factory default and you do not
know what it is then follow the factory default procedure on the following
page.

Enter a new engineers
code or enter the same
engineers code again
followed by enter

This code can be from 4 – 8 digits and will not activate a relay. It can only
be used to enter programming mode.
Note this new code in the box provided on the next page. It will be needed
to re-program the codes in the future.

Enter the access code
for relay 1 and then
press enter

This code will be used to open the door/gate (Relay 1). The code can be
from 4 – 8 digits long and must be different from the engineer’s code.

Enter a two digit relay 1
time from 00 – 99 and
then press enter

This is the time the relay 1 will energise for. 00 will latch the relay when
the code is entered and require the code followed by clear to unlatch.

More
codes?

YES

Enter the access code
for relay 2 and then
press enter

This code will be used to open the door/gate (Relay 2). The code can be
from 4 – 8 digits long and must be different from the engineer’s code.

Enter a two digit relay 2
time from 00 – 99 and
then press enter

This is the time the relay 2 will energise for. 00 will latch the relay when
the code is entered and require the code followed by clear to unlatch.

More
codes?

YES

Enter the access code
for relay 3 and then
press enter

This code will be used to open the door/gate (Relay 3). The code can be
from 4 – 8 digits long and must be different from the engineer’s code.

Enter a two digit relay 3
time from 00 – 99 and
then press enter

This is the time the relay 3 will energise for. 00 will latch the relay when
the code is entered and require the code followed by clear to unlatch.

Press enter twice
PAGE 11 of 36

The red LED will go off to confirm the exit from programming mode.
GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

ART.4800 CODELOCK REPROGRAMMING GUIDE
Engineers code
Relay 1 code
Relay 2 code
Relay 3 code

Enter the
engineer’s
code
RED Light will
illuminate *

Press Enter

Re-Enter the
engineer’s
code

Alternatively enter a
new engineer’s
code (4-8 digits)

Relay 1 Time
Relay 2 Time
Relay 3 Time

Press Enter

Enter relay
code

Relay code (4 – 8
digits) operates the
door or gate. **

Press Enter

Enter relay
time

Two digits (01 – 99 Sec
or 00 for remain open)

Press Enter

More
doors?

Press Enter
twice to exit
programming

RED Light will
switch off

YES
Repeat steps
for relay 2 &
relay 3

Notes:
* If the red light does not illuminate, the engineers code is incorrect. Follow the factory default procedure below.
** On the first loop of the flow chart its relay 1, second loop is relay 2.
FACTORY DEFAULT PROCEDURE
Step 1 Remove the power from the keypad
Step 2 Press and hold the enter button while re-powering the keypad
Step 3 Release the enter button. The factory engineer’s code is restored to 111111 (6 x 1)
PAGE 12 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

DOOR PANEL MOUNTING FRAMES
Both surface and flush mounting frames are available. The size of the frame will depend
on the number of modules that make up the door panel. The last digit of the frame code
indicates the number of modules it will take. Frames are available in gun metal gray finish,
chrome finish (Suffix \C to the frame code) or gold finish (Suffix \G to the frame code).
Flush frames:

Surface frames:

POWER SUPPLY
The GSM intercom panel is designed to work with power supplies in the range or 1224Vdc or 13Vac. The power supply should be capable of supplying a constant current of
no less than 1 amp (If the system is to work with failsafe lock releases or magnetic locks
we would recommend a minimum of 2 amps). The following Videx power supplies can be
used:Art.521B
SP29
SP28

13.5Vdc 1A DIN box PSU
13.8Vdc 2A boxed PSU with battery back up facility
13.8Vdc 3A boxed PSU with battery back up facility

Note: JP1 on the intercom panel must be set correctly for the type of PSU selected
as shown earlier in this manual.

PAGE 13 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

WIRING DIAGRAMS

PAGE 14 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

PUSH TO EXIT BUTTON AND AUXILIARY INPUTS/OUTPUTS

PUSH TO EXIT BUTTON, TRIGGERS
RELAY FOR PROGRAMMED TIME

AUXILIARY INPUT, TRIGGERS
AUXILIARY OUTPUT (AO)

AUXILIARY OUTPUT (OPEN COLLECTOR),
TRIGGERS WHEN C1 & AI ARE SHORTED

AUXILIARY INPUT, SENDS A SMS MESSAGE
TO THE TELEPHONE NUMBER STORED IN
MEMORY LOCATION 020
(NOTE: Once triggered, it can’t be triggered again for 4
minutes. This avoids multiple SMS messages being sent
for the same alarm)

PAGE 15 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

CABLE SIZE GUIDE
Connections for power supply output to intercom panel and lock release connections.
20m
50m
100m
0.5mm²
1.0mm²
1.5mm²
Connections
The power supply should be located as close to the intercom panel as possible for best performance.
Maximum acceptable resistance for above cables = 3Ω

INSTALLATION
-

Check that all components are free from damage before installing (Do not proceed with
installation in the event of damage).

Keep all packaging away from children.

Do not obstruct the ventilation openings or slots on any of the devices.

All connections to mains voltages must be made to the current national standards (IEE
Wiring regulations)

Install an appropriate fused spur or isolation switch to isolate the mains.

Isolate the mains before carrying out any maintenance work on the system.

Avoid water ingress into the rear of the module, always seal the module frame after
installation using a suitable silicon based sealant.

- All intercom and access control cables must be routed separately from the mains.
Lock release back EMF protection : A capacitor must be fitted across the terminals on
an AC lock release and a diode must be fitted across the terminals on a DC lock release
as shown in the diagrams below to suppress back EMF voltages.

0.1uF capacitor

- +

12V AC
LOCK RELEASE

DIODE
1N4002

12V DC
LOCK RELEASE

PANEL CARE
The door panels facia is either mirror finish stainless steel or matt finish aluminium. It is
important that the facia is cleaned on regular occasions to prevent dirt build up and
tarnishing of the metal. A general household metal polish can be used but care should be
taken to follow the grain of the metal when polishing and also avoid any polish build up
around the call buttons which may prevent the buttons from operating correctly.

PAGE 16 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

TESTING, POWER UP AND RESET
After connecting the power supply, antenna, lock output and auxiliary devices as shown in
this manual and before powering up a SIM card must be installed. The SIM holder can be
found on the back of the module under the label ‘SIM’. A SIM card from any supplier can
be used. Simply push the SIM holder in the direction of ‘OPEN’ and then lift. Insert the SIM
card (It will only fit one way) and then push back down and into the ‘LOCK’ position.
IMPORTANT: Replace the label over the SIM hole.
-

Check all the connections have been made correctly and then power up the system.
The GSM intercom requires approximately 30 seconds too initialise properly. We
recommend not sending SMS messages or pressing buttons during this time.
From power up; two short beeps will be heard and then following a short delay of
approximately 15 seconds, the name plate light will illuminate and a further short beep
will be heard. After approximately another 15 seconds another short beep will be
heard. The module is now fully initialised (Note: If you here a different combination of
beeps in place of the last short single beep then you can find the meaning of these
beeps towards the back of this manual. Once initialised, you can begin programming.

Power up initialisation sequence
9
9
9

9
9
9

2 short beeps
Approx. 15 seconds delay
1 short beep and the 4810 name plate illuminates (Note: button module name plates will already be illuminated)
Approx. 15 seconds delay
One short beep
System is ready

RESET TO FACTORY DEFAULTS
There are two reset modes available. The first will reset the master code only and the
second will reset everything and clear all stored call button telephone numbers.
RESET THE MASTER CODE TO 1111
1. Power down the intercom panel
2. Put a short across C1 & PTE
3. Power up, 2 beeps will be heard followed by a delay and then a further beep.
4. Remove the short after the 3rd beep.
5. The master code is now reset to 1111
FULL RESET
1. Power down the intercom panel
2. Put a short across C2 & PTE
3. Power up, 2 beeps will be heard followed by a delay and then a further 3 beeps.
4. Remove the short after the 5th beep.
5. All settings are returned to factory defaults

PAGE 17 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

PROGRAMMING
Programming can be carried out either by text message or by dialling into the intercom
panel (Certain programming features can only be setup by text message).
IMPORTANT NOTE: When you are required to use “ in a text message it is very important to use the
correct symbol and not for example ‘ (Or two ‘ single apostrophes side by side which you will see
look the same but will be interoperated differently by the SMS intercom panel).

PROGRAMMING BY TEXT MESSAGE
Programming by text message is the simplest way to customise the settings of the
intercom panel and add or delete telephone numbers. Simply send texts in the format
below to the telephone number of the SIM within the intercom panel:<4 DIGIT CODE><3 DIGIT FUNCTION CODE>
4 DIGIT CODE:

The code prevents unauthorised access to the programmable
features of the system. The code must be four digits long but
can be any combination using digits 0 – 9. The default code is
1111 and will be used for all examples in this manual.

3 DIGIT FUNCTION CODE:

The 3 digit function code identifies the programmable feature
to be changed. The code must be in capital letters. The table
below lists the available codes.

DESCRIPTION
Store a telephone no.
Set call time
Set relay time
Set auxiliary out time
Set auxiliary out mode
Keep connection facility
Divert to second no. time
Enable/disable divert
Check GSM signal strength
Check software version
Dial a number
Store SMS message for C2-AI
Change 4 digit code
Initiate a special command
Trigger the relay
Trigger the auxiliary output
Store balance check dial string
Check credit balance
Latch the relay
Unlatch the relay
Latch the auxiliary output
Unlatch the auxiliary output

OPTIONAL DATA:

PAGE 18 of 36

CODE
STN
SPT
RLT
AOT
AOM
NOD
DIT
DIV
SIG
VER
DLE
SMS
CDE
PRG
RLY
AUX
SDL
BAL
RLA
RUL
ALA
AUL

EXAMPLE
1111STNnnn”01912243174”
1111SPTnn
1111RLTnn
1111AOTnn
1111AOMnn
1111NODnn
1111DITnn
1111DIVnm
1111SIG?
1111VER?
1111DLE”123”
1111SMS”HouseAlarm”
1111CDE1234
1111PRG(command)
1111RLY
1111AUX
1111SDL”*#1345#”
1111BAL?
1111RLA
1111RUL
1111ALA
1111AUL

SETTINGS
nnn = 001-250
nn = 01 - 12
nn = 00 - 99
nn = 00 - 99
nn = 00 or 01
nn = 01 - 99
nn = 01 - 99
n = 0-9 m = 0-1
N/A
N/A
N/A
N/A
Any 4 digits
AT commands
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

DEFAULT
N/A
02 (40s)
05 (5s)
05 (5s)
01
30 (30days)
15 (15s)
m=0
N/A
N/A
N/A
AUX TRIG
1111
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

PAGE
19-20
20
21
21
21-22
22
22
22-23
28-29
28
23
23
22
24
28
28
24
28-29
28
28
28
28

The optional data will vary depending on the command used.
It may be a telephone number, a time setting or may not be
used at all. For more information see the command settings
below.

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

OPTIONAL ?:

Most of the commands support the ? feature. When this is
added to the end of the text message, a confirmation text
message will be sent back to the sender indicating the new
data has been received and stored.

When sending text messages there may be a delay from when you send the message to
when it is received by the intercom panel depending on how congested the network is. If
you are at the door panel when sending the message you will here a single beep from the
intercom panel to indicate it has receive the message.
STORING A CALL BUTTON TELEPHONE NUMBER
Telephone numbers can be stored for the ten available call buttons. Each call button can
call up to two telephone numbers (If the first is busy or not answered in a certain time it
can call the second number if the divert facility is setup). The messages to store/check
numbers are as follows (See important note on page 18):1111STNnnn”yyyyyyyyyyy”

Store the telephone number yyyyyyyyyyy in position nnn

1111STNnnn”yyyyyyyyyyy”?

Store the telephone number yyyyyyyyyyy in position nnn
and send a confirmation text message to confirm
storage of new number.

1111STNnnn?

Query the telephone number stored in location nnn. A
text message will be sent to the sender with the stored
number for that location.

1111STNnnn””

Delete the telephone number stored in location nnn.

1111STNnnn””?

Delete the telephone number stored in location nnn. A
text message will be sent to the sender with the delete
confirmation for that location.

nnn can be found using the following table. The telephone number y can be a maximum of
19 digits.
Call Button
Memory location (nnn) of
Memory location (nnn) of
first number called
divert to number to call
Button 1 (C1 & a)
001
011
Button 2 (C1 & b)
002
012
Button 3 (C1 & c)
003
013
Button 4 (C1 & d)
004
014
Button 5 (C1 & e)
005
015
Button 6 (C2 & a)
006
016
Button 7 (C2 & b)
007
017
Button 8 (C2 & c)
008
018
Button 9 (C2 & d)
009
019
Button 10 (C2 & e)
010
020
Use the chart on page 26 to record the telephone numbers stored.

PAGE 19 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

STORING A TELEPHONE NUMBER FOR DIAL IN DOOR RELEASE
Dial in door release allows users of telephones with their number stored to release the
door/gate simply by dialling the telephone number of the SIM in the intercom panel. The
intercom panel will check the callers ID when it receives a call and if it matches the list of
stored numbers, it will clear the call down (Avoiding the caller being charged for the call)
and will activate the relay for the programmed time. The number of numbers thatcan be
stored depends on the SIM card’s available memory. SIM cards are normally able to store
100 – 250 numbers. The messages to check, store or delete numbers are as follows (See
important note on page 18):1111STNnnn”yyyyyyyyyyy”

Store the telephone number yyyyyyyyyyy in position nnn
where nnn = 100 - 250

1111STNnnn”yyyyyyyyyyy”?

Store the telephone number yyyyyyyyyyy in position nnn
where nnn =100 - 250and send a confirmation text
message to confirm storage of new number.

1111STNnnn?

Query the telephone number stored in location nnn
where nnn = 100 - 250. A text message will be sent to
the sender with the stored number for that location.

1111STNnnn#

Delete the telephone number stored in location nnn
where nnn = 100 - 250.

1111STNnnn#?

Delete and confirm deletion of a telephone number in
location nnn where nnn = 100 - 250.

Memory location nnn can be in the range of 100 – 250. (Important note: Some SIM cards
may use some of the memory locations for special features such as checking balance,
retrieving voice mails etc. If you are not planning to use all memory location we would
suggest storing from location 111 onwards. Use the chart on page 26-27 to record the
telephone numbers stored.
Note: It is important to switch off voicemail and automatic SMS features on the SIM
card when using this feature. See the ‘Forced Dial’ section for more details. Also
note that it will not be possible to use the dial in and program facility from a number
stored to release the door/gate when dialling in.
SET CALL TIME
The call time is the maximum time in seconds that a call can last before the intercom panel
automatically clears the call down. The time can be from 20 seconds up to 240 seconds (4
minutes) and begins from when the call button is pressed. The default time is 40 seconds.
The following messages are used to set/check the maximum call time.
1111SPTnn

PAGE 20 of 36

Store the time nn x 20 seconds (e.g. nn = 03, time = 60
seconds.

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

1111SPTnn?

Store the time nn x 20 seconds (e.g. nn = 02, time = 40
seconds. Also send a confirmation text back to the
sender.

1111SPT?

Query the current stored time. A text message will be
sent to the sender showing the stored time. (Remember
to multiple the number in the received text by 20
seconds)

SET RELAY TIME
The relay time can be from 01 – 99 seconds or latching (Set the relay time to 00 for
latched mode. In latch mode, the relay will stay energised until the command is send
again).
1111RLTnn

Store the time nn = time in seconds.

1111RLTnn?

Store the time nn = time in seconds. Also send a
confirmation text back to the sender.

1111RLT?

Query the current stored time. A text message will be
sent to the sender showing the stored time.

SET AO (AUXILIARY OUTPUT) TIME (FOR AOM = 01 ONLY)
The AO time can be from 01 – 99 seconds or latching (Set the AO time to 00 for latched
mode).
1111AOTnn

Store the time nn = time in seconds.

1111AOTnn?

Store the time nn = time in seconds. Also send a
confirmation text back to the sender.

1111AOT?

Query the current stored time. A text message will be
sent to the sender showing the stored time.

SET AO (AUXILIARY OUTPUT) MODE
There are two mode of operation for the AO terminal:User activated: nn = 01
To activate the AO terminal either short AI to C1 or press 6 on the telephone during a call.
Call activated: nn = 00
AO will activate when a call begins and deactivate when the call ends.
1111AOMnn

Store the mode nn = 01 or 00.

1111AOMnn?

Store the mode nn = 01 or 00. Also send a confirmation
text back to the sender.

PAGE 21 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

1111AOM?

Query the current stored mode. A text message will be
sent to the sender showing the stored mode.

CHANGING THE FOUR DIGIT CODE
The four digit code can be any combination of numbers 0-9 but must be 4 digits long. The
code allows access to the programming menu in dial in mode and must be used when
sending text messages to the intercom panel. The following message changes the code:1111CDEnnnn

nnnn = new 4 digit code

SET DAYS TO WAIT BEFORE MAKING A CALL
In the event the intercom panel is not used for long periods of time it could be possible that
the network disconnects it. To prevent this from happening it is possible to program a time
period (From 01 – 99 days) to wait before the intercom panel makes a short call to refresh
the connection. This time period is reset after each call made on the system and will only
happen if the full time period elapses without any incoming or outgoing calls.
1111NODnn

Store the time nn = time in days.

1111NODnn?

Store the time nn = time in days. Also send a
confirmation text back to the sender.

1111NOD?

Query the current stored time. A text message will be
sent to the sender showing the stored time.

DIVERT TIME
The divert time is the number of seconds to wait for a call to be answered before diverting
to the second number (The divert facility must be set for this to work). The default time is
15 seconds (The count down begins from when the call button is pressed, but is refreshed
when the telephone begins to ring) and can be set to 01 – 99 seconds).
1111DITnn

Store the time nn = time in seconds.

1111DITnn?

Store the time nn = time in seconds. Also send a
confirmation text back to the sender.

1111DIT?

Query the current stored time. A text message will be
sent to the sender showing the stored time.

DIVERT SETUP
Divert can be set for any or all of the call buttons. When set, if a call is not answered within
the divert time, the call will be forwarded to the second number and the call time will be
refreshed. The following table shows the value of nm used in the programming messages.
Default is all diverts disabled (m=0).

PAGE 22 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

CALL BUTTON
Button 1 (C1 & a)
Button 2 (C1 & b)
Button 3 (C1 & c)
Button 4 (C1 & d)
Button 5 (C1 & e)
Button 6 (C2 & a)
Button 7 (C2 & b)
Button 8 (C2 & c)
Button 9 (C2 & d)
Button 10 (C2 & e)

SET DIVERT
01
11
21
31
41
51
61
71
81
91

DISABLE DIVERT
00
10
20
30
40
50
60
70
80
90

n = Call Button number from 1 – 10 (0-9)
m = Divert set (1) or divert not set (0)
1111DIVnm
1111DIVnm?

Store the divert setting.
Store the divert setting. A text message will be sent to
the sender with the acknowledgment.

FORCED DIAL
A useful feature of the Intercom panel is its ability to call a number sent to it in a text
message. This feature can be used when setting up the SIM card. For example, disabling
the voicemail facility or disabling automatic SMS messages or missed calls. Any number
up to 15 digits can be called and the call will last for a maximum of 40 seconds. The
example below would switch off voicemail on a Vodafone SIM card. Substitute the
Vodafone number for other service providers (See important note on page 18).
1111DLE”1210“

Dial 1210 for the intercom panel

Other useful numbers which can be used with this feature are as follows. Please also
check the service provider’s web sits for other useful codes.
Vodafone
Disable voicemail
Disable text alerts

1210
#148#

O2
1760
1760

NOTE: Disabling voicemail and text alerts is very important as there is no way to retrieve
either of these services from an intercom panel. Disabling these features will also prevent
the intercom panel switching to voicemail or sending a text when dialling in from another
phone.
STORE SMS AUXILIARY MESSAGE
When C2 & AI are shorted on the intercom panel, a text message will be sent to the
number stored in memory location 020. The text message can be customised using the
following message(See important note on page 18) :1111SMS”HouseAlarm”
Note:

Change message to HouseAlarm

The message can be a maximum of 20 characters long and can not include spaces or “.
The memory location used to store the telephone where the text will be send is also the same
memory location used for the divert telephone number for button 10 (i.e. 020).

PAGE 23 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

PROGRAM BY ‘AT’ COMMANDS
This is an advanced feature of the system which can allow an AT format command to be
sent to the OEM GSM module.
1111PRG(command)

Send an AT command to the OEM module

STORE CREDIT BALANCE CHECK STRING
Several network providers offer the facility to check available balance on their pay as you
go tariffs. For example, on Vodafone the string is *#1345# and on O2 the string is *#10#.
Other networks may also have this feature. Because the intercom will not know the details
of the network provider’s SIM card which you have inserted it will be necessary to store the
correct string in order to use the credit balance check features.
1111SDL”*#1345#”
1111SDL”*#10#”

PAGE 24 of 36

Store the balance check string for a Vodafone pay as you go.
Store the balance check string for an O2 pay as you go.

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

PROGRAMMING BY DIAL IN
Note: programming dial in cannot be used from telephones which are already
programmed to open the door when they dial the intercom panel.
When dialling into the GSM intercom from a telephone number which is already
stored as one of the call button telephone numbers it will be necessary be press
¶¶ to switch from call mode to programming mode.
To gain access to the programming menu via dial in, follows these steps:1. Call the telephone number of the intercom panel.
2. Wait for the intercom panel to answer and signal by two beeps (If the number you
are dialling from is already programmed as a call button number then you will need
to press ¶¶ before proceeding to the next step).
3. Enter the four digit code listening for a confirmation beep after each digit.
4. If the code is correct, you will here two beeps to indicate programming mode. If the
code is incorrect the call will end and the line will go dead.
Once in programming mode, the following options are available. Remember to listen for a
beep after each digit entered. This indicates that it has been received and understood by
the intercom panel. The intercom panel will stay in programming mode until the call ends
or a timeout occurs. The timeout will occur after 30 seconds if no buttons are pressed. This
is reset to 30 seconds each time a button is pressed.
Note: At any point press the # key to clear and begin a programming sequence again. # is
also used to confirm and store a new value. After pressing #, two beeps will be heard from
the telephone to indicate successful completion of a command, four beeps will indicate an
error in the command.
The following table outlines the available programming codes. These are explained in detail on the following pages.

DESCRIPTION
Store a telephone no.
Storing a divert telephone no.
Set call duration time
Set relay time
Set auxiliary out time
Keep connection facility
Divert to second no. time
Set auxiliary out mode
Enable/disable divert
Change 4 digit code

NOTE:

PAGE 25 of 36

CODE
01-10
11-29
50
51
52
55
56
57
58
59

EXAMPLE
nn01912243174#
nn01912243174#
50nn#
51nn#
52nn#
55nn#
56nn#
57nn#
58nm#
59nnnn#

SETTINGS
nn = 01-10
nn = 11-20
nn = 01-12
nn = 00 - 99
nn = 00 - 99
nn = 01 - 99
nn = 01 - 99
nn = 01 or 00
n = 0-9 m = 0-1
nnnn= 4 digits

DEFAULT
N/A
N/A
02
05 (5s)
05 (5s)
10 (10days)
15 (15s)
01
m=0
1111

PAGE
26
26
26
26
26
27
27
27
27
26

While in dial in mode it is also possible to start a call with the intercom panel
which will open the speech and also allow the user functions such as
triggering the relay to work. After dialling in, enter the 4 digit code and the
press to start the call.

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

STORING A CALL BUTTON TELEPHONE NUMBER
Telephone numbers can be stored for the ten available call buttons. Each call button can
call up to two telephone numbers (If the first is busy or not answered in a certain time it
can call the second number if the divert facility is setup). The following programming
sequence stores telephone numbers.
nnyyyyyyyyyyy#

Store the telephone number yyyyyyyyyyy in position nn

nn#

Delete the telephone number yyyyyyyyyyy in position nn

nn can be found using the table. The telephone number y can be a maximum of 19 digits.
Call Button
Button 1 (C1 & a)
Button 2 (C1 & b)
Button 3 (C1 & c)
Button 4 (C1 & d)
Button 5 (C1 & e)
Button 6 (C2 & a)
Button 7 (C2 & b)
Button 8 (C2 & c)
Button 9 (C2 & d)
Button 10 (C2 & e)

Memory location (nn) of first
number called
01
02
03
04
05
06
07
08
09
10

Memory location (nn) of divert
to number to call
11
12
13
14
15
16
17
18
19
20

Use the chart on page 26 to record the telephone numbers stored.
SET CALL TIME
The call time is the maximum time in seconds that a call can last before the intercom panel
automatically clears the call down. The time can be from 20 seconds up to 240 seconds (4
minutes) and begins from when the telephone rings. The default time is 40 seconds. The
following programming sequence stores a new call time.
50nn#

Store the time nn x 20 seconds (e.g. nn = 3, time = 60

seconds.)

SET RELAY TIME
The relay time can be from 01 – 99 seconds or latching (Set the relay time to 00 for
latched mode).
51nn#

Store the time nn = time in seconds.

SET AO (AUXILIARY OUTPUT) TIME
The AO time can be from 01 – 99 seconds or latching (Set the AO time to 00 for latched
mode).
52nn#

Store the time nn = time in seconds.

PAGE 26 of 36

nnnn = new 4 digit code

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

Store the time nn = time in days.

Store the time nn = time in seconds.

DIVERT SETUP
Divert can be set for any or all of the call buttons. When set, if the call is not answered
within the divert time, the call will be diverted to the second number. The following table
shows the value of nn used in the programming messages. Default is, all diverts disabled.
CALL BUTTON
Button 1 (C1 & a)
Button 2 (C1 & b)
Button 3 (C1 & c)
Button 4 (C1 & d)
Button 5 (C1 & e)
Button 6 (C2 & a)
Button 7 (C2 & b)
Button 8 (C2 & c)
Button 9 (C2 & d)
Button 10 (C2 & e)

58nn#

SET DIVERT
01
11
21
31
41
51
61
71
81
91

DISABLE DIVERT
00
10
20
30
40
50
60
70
80
90

Store the divert setting.

AUXILIARY OUT MODE
There are two mode of operation for the AO terminal:User activated: nn = 01
To activate the AO terminal either short AI to C1 or press 6 on the telephone during a call.
Call activated: nn = 00
AO will activate when a call begins and deactivate when the call ends.
57nn#

PAGE 27 of 36

Store the mode nn = 01 or 00.

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

SYSTEM OPERATION
TO MAKE A CALL FROM THE INTERCOM PANEL
Press the required call button. Two beeps will be heard to indicate the call has been placed. If a
mistake is made, press any other button to clear the call (A long beep followed by a short beep will
be heard to confirm the call has been cleared. (Note: If the same button is pressed after five
seconds of placing the call this will also clear the call down. Pressing the same button before five
seconds will do nothing).

DOOR/GATE RELEASE
This is signalled by 1 second interval beeps from the intercom panel. Pressing 3 releases the
door/gate for the programmed time. Pressing 1 followed by 0 will latch the door/gate in the open
position (Note: To unlatch press 3, the door/gate will unlatch after the programmed time.

RELEASING THE GATE/DOOR BY DIALLING THE INTERCOM PANEL NUMBER
This feature is only possible if the caller’s number has been stored correctly for this feature. Simply
dial the number of the intercom panel. The intercom panel will drop the call and then open the
gate/door for the programmed time.

USER COMMANDS
The following commands can be carried out during a call: (Note: Successful commands are signalled by two
beeps from the telephone, errors are signalled by four beeps).
2nd KEY TO PRESS
FUNCTION
1st KEY TO PRESS
LATCH RELAY (UNLATCH BY PRESSING 3)

RELEASE THE DOOR OR GATE

N/A

ACTIVATE THE AUXILIARY OUTPUT

N/A

END A CALL

N/A

ADJUST DOOR SPEECH VOLUME

0-9 (0=Lowest, 9 = Highest)

ADJUST PHONE SPEECH VOLUME

0-9 (0-Lowest, 9 = Highest)

ENTER PROGRAMMING MODE DURING A CALL

The following text messages can be sent while in standby (Examples show code as 1111):
FUNCTION
MESSAGE TO SEND
CHECK THE SIGNAL STRENGTH

1111SIG?

CHECK THE AVAILABLE BALANCE*

1111BAL?

CHECK THE SOFTWARE VERSION

1111VER?

RELEASE THE DOOR/GATE

1111RLY? (? Optional, send if a confirmation is required)

ACTIVATE THE AUXILIARY OUTPUT

1111AUX? (? Optional, send if a confirmation is required)

LATCH THE RELAY

1111RLA? (? Optional, send if a confirmation is required)

UNLATCH THE RELAY

1111RUL? (? Optional, send if a confirmation is required)

LATCH THE AUXILIARY OUTPUT

1111ALA? (? Optional, send if a confirmation is required)

UNLATCH THE AUXILIARY OUTPUT

1111AUL? (? Optional, send if a confirmation is required)

PAGE 28 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

CHECKING THE BALANCE
*Note: The balance can only be checked if the correct balance check string has previously been
stored using the SDL code explained earlier in the manual.
The intercom also has the facility to monitor the available credit and then text you to inform you
when it has fell below £5.00, €5.00 or $5.00. It will then remind you with another text after every 5
calls until the credit is either increased or it runs out. To use this feature, the following settings
must first be made:o
o
o

You must be using a Pay AS You GO SIM card from a provider that offers this service (Vodafone, O2)
The correct balance check string must be stored using the SDL code.
A mobile phone number in which to receive the balance low text must be stored in location 020 using the
STN code.

UNDERSTANDING THE SIGNAL STRENGTH
When a request for signal strength message is sent to the intercom panel it will reply with a two
digit signal strength code. The code will be between 0 – 31 or 99. Ideally the signal strength should
be as close to 31 as possible. The lower the number, the weaker the signal. Signal strengths lower
than 10 may cause operational problems such as loss of speech quality (and possibly missing
DTMF tones) and network loss. A signal strength of 99 indicates it could not be detected.

DIALLING INTO THE INTERCOM FROM ANOTHER TELEPHONE
There are three possible outcomes to dialling into the GSM intercom depending on the
telephone number you are dialling in from and the features setup during programming. The
three possible outcomes are shown in the table below and are shown in order of priority
(For example, if the number is programmed to automatically activate the relay, this will
take priority over the following two options and if the telephone number is stored as a
telephone number called from one of the push buttons, this will take priority over the last
option.
FUNCTION
Dial in to open the door.
After dialling the number, the relay will
activate and the call will be dropped.
Dial in to activate a call (Live speech,
activate relay/AUXO)

REQUIREMENT
The telephone number of the telephone
dialling in must be stored in memory location
100 - 250

PRIORITY
1st

The telephone number of the telephone
dialling in must be stored in memory location
001 - 020

2nd

If neither of the two requirements above are
met.

3rd

After dialling the number, the call will
be answered and two beeps will be
heard. The speech will then be live.
Dial in to enter programming mode.
After dialling the number, the call will
be answered and two beeps will be
heard. You will then be required to
enter the four digit code to gain access
to the programming menu.

PAGE 29 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

RECORD SHEET
INTERCOM PANEL TELEPHONE No.
IMEI NUMBER
MASTER CODE
BUTTON
Button 1
Button 1 (Divert)
Button 2
Button 2 (Divert)
Button 3
Button 3 (Divert)
Button 4
Button 4 (Divert)
Button 5
Button 5 (Divert)
Button 6
Button 6 (Divert)
Button 7
Button 7 (Divert)
Button 8
Button 8 (Divert)
Button 9
Button 9 (Divert)
Button 10
Button 10 (Divert)

MEM. LOCATION
001
011
002
012
003
013
004
014
005
015
006
016
007
017
008
018
009
019
010
020

USER NAME

TELEPHONE No.

DIAL IN ACCESS CONTROL MEMORY RECORD SHEET
Mem.
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123

User Name

Telephone No.

ONLY USE THESE 10
MEMORY LOCATIONS
AS A LAST RESORT.
PREFERABLY, START
AT MEMORY
LOCATION 110

PAGE 30 of 36

Mem.
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199

User Name

GSM DOOR INTERCOM TECHNICAL MANUAL

Telephone No.

VER1.2.1

124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175

PAGE 31 of 36

200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

UNDERSTANDING THE BEEPS
Functions and errors are indicated by beeps from the intercom panel. The following will help you
understand the different beeps heard and what, if anything needs to be done in response to the
beeps.
BEEP
Short beeps at 1 second intervals
Single short beep while the
system is in standby and not
being used.
Two short beeps followed by a
long beep
Long beep followed by short beep
while the system is in standby.

REASON
Relay or auxiliary output activated.
A valid text message has been
received and processed

SOLUTION
None, this is normal
None, this is normal

Button pressed but no number
stored
Invalid text message received.

Long beep followed by short beep
while the system is in use.

Manually ending a call by pressing
a call button

Four long beeps

Not registered with a network
provider but still trying

Six long beeps

Unknown registering problem

Eight long beeps

Registered but roaming for a
better network

Single short beep every 10
seconds after power up

Unable to see the SIM card

Program a telephone number for
the button pressed.
If this has happened when
sending one of the programming
text messages then check the
message for errors. These beeps
will also be heard if the 4 digit
code in the text message is
incorrect. If you are unsure of the
4 digit code, try resetting it to
1111.
None, this confirms the call has
been cancelled. Another call can
be placed if required.
Leave it a short while to see if it
manages to find the network. If the
beeps repeat every 30 seconds
then try moving the antenna to a
better location or changing the
SIM to another network provider.
Try moving the antenna to a better
location. Try changing the SIM
card to another network provider.
This could happen if it registers to
another network instead of its
primary one. This may result in
higher call charges. Try another
SIM provider for that area.
Check the SIM card is fitted
correctly. Try removing the SIm
card, cleaning and fitting again.
Try a different SIM card.

PAGE 32 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

TROUBLE SHOOTING
SYMPTOM
Interference on the speech

TEST

The intercom panel repeatedly beeps twice
and the name plate back light of the module
(Not additional button modules) does not
illuminate.

Check the power supply is of adequate voltage as show
earlier in this manual and that the jumper JP1 is in the
correct position.

Check the signal strength ‘1111SIG?’. If the signal strength
is to low the GSM module which increase it’s power to
compensate causing interference with the speech circuits.
Try relocating the antenna or using a more powerful or
directional antenna.
Ensure the antenna cables are not running close to the
power supply cables or the microphone wires inside the
intercom panel
Try a different SIM card from a different service provider as
they may have better coverage in that area.

Try a full reset as shown earlier in the manual (Powering
up with C2 & PTE shorted).
Try a different SIM card.
Intercom module may have a fault.

A long beep is heard when I press a button.

No telephone number setup for that button. Check the
programming.
Check the SIM card is fitted correctly.

The intercom panel does not respond to
SMS messages

Check the SIM card has a SMS service centre number
stored. This will require putting the SIM card into a mobile
phone to check. Contact the SIM card provider if you are
not sure.
Check the number you are sending the message to is
correct (The number of the SIM card in the intercom panel
After sending a SM to the intercom panel. Listen for a
single short beep from the Intercom panel. This will
indicate that the message was received and understood. If
a long beep is heard it indicates the message was either
not understood or the 4 digit code was incorrect.
Try resetting the 4 digit code to 1111 as shown earlier in
this manual (Powering up with C1 & PTE shorted).

The call keeps dropping out

Increase the call time in programming.
Check the signal strength and if necessary, move or
change the antenna or try a different SIM card provider.

Speech echoes and feeds back

Try lowering the speaker volume using jumpers JP2 & JP3
Try adjusting the volume using the programmable settings
during a call
Check the microphone is fitted correctly in the intercom
panel and that the mic hole is not blocked in any way.

ERROR message returned in SMS when
programming or no SMS returned at all
even though a ? was included at the end of
the message sent.

Check over the message sent again and compare it with
the examples in the manual.
Common errors include:1. Using two apostrophe marks side by side instead of “.
Note that these look the same in the message. An easy
way to see if this is the problem is to move the cursor
along in the message and if the cursor can get between
the two “ then it is not the connect character used.
2. Lower case letters instead of upper case. For example
using stn when STN should be used.

PAGE 33 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

Enfora certifies that the Enfora Enabler IIG TM MHz GSM Radio Module
FCC ID: MIVMLG0208) complies with the RF hazard requirements
applicable to broadband PCS equipment operating under the authority
of 47 CFR Part 22 or Part 24, Subpart E of the FCC Rules and
Regulations.
This certificate is contingent upon installation, operation and use of the
Enabler IIG module and its host product in accordance with all
instructions provided to both EOM and end used. When installed and
operated in a manner consistent with the instructions provided, the
Enfora Enabler IIG module meets maximum permissible exposure (MPE)
limits for general population/uncontrolled exposure at defined in
section 1.1310 of the FCC Rules and Regulations.
WARNING
To comply with FCC RF exposure requirements, a separation distance
of 20cm (7.87”) or more must be maintained between the antenna of this
product and all persons
Separate FCC approval for this product is not required as it will be
classed as a fixed installation.
THIS PRODUCT IS NOT DESIGNED TO BE USED AS AN EMERGENCY
CALL POINT

The product is CE marked demonstrating its conformity and is for distribution
within all member states of the EU with no restrictions.
This product follows the provisions of the European Directives
89/336/EEC & 92/31/EEC (EMC),
73/23/EEC (LVD) and 93/68/EEC (CE marking).

PAGE 34 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

Date
30/09/2008

Software Version
GSM0.3.3

05/11/2008

GSM0.3.4

25/11/2008
06/01/2009

GSM0.3.5
GSM0.3.6

09/02/2009

GSM0.3.7

05/05/2009

GSM0.3.8

PAGE 35 of 36

Revision
Added facility to latch the relay by pressing 1 during a
call.
Added facility to check credit balance on selected
Pay as You Go SIM cards.
Improved echo cancellation during a call.
Inserted divert time refresh after dialling finishes and
ringing begins.
Changed latch activation facility from pressing 1 to
pressing 10 to activate.
Added additional refresh to SMS facility after each
call.
Added additional software resets.
Re-enabled latching relay facility when relay time is
00 (Previously disabled in version 0.3.4 when new
latching facility was added using keys 10 to latch)
Added facility for telephone numbers which are
stored in memory locations 001 – 020 (Call button
locations) to automatically open speech (Call mode)
when dialling into the GSM intercom (As oppose to
going into programming mode and requesting the
master code). Dial in to release the door still takes
priority.
The following SMS codes have been added:RLA - Latch the relay (e.g. 1111RLA?)
RUL - Unlatch the relay (e.g. 1111RUL?)
ALA - Latch the AUXO (e.g. 1111ALA?)
AUL - Unlatch the AUXO (e.g. 1111AUL?)
Added facility to switch into programming during a
call by pressing ¶¶
Added facility to control the mode of operation for the
auxiliary out terminal (Either user activated or call
activated).

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

Northern Office
Videx Security Ltd
Unit 4-7 Chillingham Ind. Est.
Newcastle Upon Tyne
NE6 2XX
TEL 0870 300 1240
FAX 0191 224 5678
Southern Office
1 Osprey
Trinity Park
Trinity Way
London
E4 8TD
FAX 0208 523 5825
TECHNICAL SUPPORT
tech@videx-security.com
TEL 0191 224 3174
FAX 0191 224 4938
http://www.videx-security.com

PAGE 36 of 36

GSM DOOR INTERCOM TECHNICAL MANUAL

VER1.2.1

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