Centurion G-SPEAK Installation manual

G-SPEAK Installation Manual
TM
GSM-BASED
INTERCOM
SYSTEM
Company Profile
Company
Profile
1986
In-house
R&D
development
team
100%
testing of
products
1990
1995
1999
Centurion Systems
today
Manufacture to
international
quality standard
ISO 9001:2008
Competent
after-sales
technical support
from 07h00 - 18h00
Monday to Friday
Sales and support throughout
Southern Africa and over
50 countries worldwide
Centurion Systems (Pty) Ltd reserves the right to make changes to the products described in this manual without notice
and without obligation of Centurion Systems (Pty) Ltd to notify any persons of any such revisions or changes.
Additionally, Centurion Systems (Pty) Ltd makes no representations or warranties with respect to this manual.
No part of this document may be copied, stored in a retrieval system or transmitted in any form or by any means electronic,
mechanical, optical or photographic, without the express prior written consent of Centurion Systems (Pty) Ltd.
Contents
Quick Setup Steps
page 1
IMPORTANT SAFETY INSTRUCTIONS
page 2
1.
2.
Glossary of Terms
General Description

Main Features
3. Specifications

Physical Dimensions

Technical Specifications

Functional Specifications
4. Product Identification
5. Required Tools and Equipment
6. Mounting Instructions

Calling Module Mounting

GSM Controller Mounting

Inserting an Activated SIM Card
7. Wiring Diagrams
8. GSM Network Signal Detection
9. G-SPEAK Functionality

Voice Phone Functionality

Adjusting the Calling Module Volume

Switch Phone Functionality

Changing the Default Password

Resetting the Password to Default

List Of Commands

Special Commands
10. Installation Handover
Page 4
Page 5
Page 5
Page 6
Page 6
Page 7
Page 7
Page 8
Page 10
Page 10
Page 10
Page 15
Page 16
Page 19
Page 21
Page 22
Page 22
Page 23
Page 24
Page 24
Page 24
Page 24
Page 32
Page 34
Icons used in this manual
This icon indicates tips and other
information that could be useful
during the installation.
This icon denotes variations and
other aspects that should be
considered during installation.
This icon indicates warning, caution or attention! Please take special note of
critical aspects that MUST be adhered to in order to prevent injury.
Quick Setup Steps
These abbreviated instructions are for the experienced
installer who needs a checklist to get a standard installation
up and running in the minimum of time.
Detailed installation features and functions are referred to
later in this manual.
Mount the Calling Module according to the
instructions given in the Installation section.
Connect the GSM Controller to the Calling Module
according to the wiring diagram in the Wiring
section.
Insert a network and RICA-registered SIM card (with
some airtime loaded onto it) into the SIM card
holder on the GSM Controller as shown on page 18.
Connect a 12V - 30V DC power supply to the GSM
Controller according to the instructions in the Wiring
section. The backlight on the Calling Module will light
up, and the GSM Controller will begin network
registration. Once registered on the network, the
Calling Module will emit three short beeps. Signal
strength will be indicated on the signal strength
LEDs next to the antenna connector as shown under
Section 7.
Program the unit. See Section 10.
Call a Voice Phone and gauge voice quality and
volume. It is important that the Calling Module and
phone being called are separated by at least 20
meters to prevent feedback.
Determine if any interference is noticeable during a
call. Adjust the antenna placement to resolve any
interference issues. The antenna should not be
placed close to the Calling Module.
page 1
IMPORTANT
Safety Instructions
ATTENTION
To ensure the safety of people, it is important that you
read all the following instructions. Incorrect
installation or incorrect use of the product could
cause serious harm to people.
The installer, being either professional or DIY, is the
last person on the site who can ensure that the
operator is safely installed, and that the whole system
can be operated safely.
Warnings for the Installer
CAREFULLY READ AND FOLLOW ALL INSTRUCTIONS
before beginning to install the product.
 All installation, repair, and service work to this product
must be carried out by a suitably qualified person
 Secure all easily accessed controls in order to prevent
unauthorised use of the device
 Do not in any way modify the components of the
G-SPEAK unit
 Do not install the G-SPEAK unit in an explosive
atmosphere: the presence of flammable gasses or fumes is
a serious danger to safety
 Before attempting to install the unit, cut electrical power to
the control box where the G-SPEAK unit will be mounted
 Make sure that the earthing system is correctly
constructed, and that all metal parts of the system are
suitably earthed
 Explain these safety instructions to all persons authorised
to use G-SPEAK, and be sure that they understand the
hazards associated with the G-SPEAK system
 Do not leave packing materials (plastic, polystyrene, etc.)
within reach of children as such materials are potential
sources of danger
 Dispose of all waste products like packaging materials,
worn-out batteries, etc. according to local regulations
 Centurion Systems does not accept any liability caused
by improper use of the product, or for use other than that
for which the automated system was intended
page 2

This product was designed and built strictly for the use
indicated in this documentation. Any other use, not
expressly indicated here, could compromise the service
life/operation of the product and/or be a source of danger
Anything not expressly specified in these instructions
is not permitted.
page 3
1. Glossary of Terms
Called Party:
When one of the Call Buttons on the Calling Module is pressed, the Called Party is the
person or persons who receives/answers the call on their mobile phone or landline
handset.
Calling Module:
This can be seen as similar to a traditional intercom gate station or entry oanel that
resides outside of the property and is the component of the G-SPEAK system that is
used to dial through to and communicate with Voice Phones.
GSM Controller:
A module using GSM (Global System for Mobile Communications) technology to
communicate wirelessly with GSM-enabled handsets, allowing both audible
communication and monitoring and switching of inputs and outputs.
DTMF:
Dual Tone Multi-Frequency signalling. This is used for telecommunication signalling over
analogue telephone lines in the voice-frequency band between telephone handsets and
other communication devices and the switching centre. This allows the user to press 1, 2,
3 or 4 on his handset to switch any of the outputs on the G-SPEAK.
Voice Phone:
A Voice Phone pertains specifically to the intercom functionality of the G-SPEAK system,
and is any learned-in phone with the ability to communicate audibly with the Calling
Module, but is also capable of activating any of the outputs during a call using DTMF
signalling.
Switch Phone:
A Switch Phone is a learned-in phone that is capable of exercising some influence upon
the outputs of the controller via GSM switching and does not necessarily possess Voice
Phone functionality, though it can be learned in for both.
Channel:
An electrical gateway implemented as a physical terminal on the G-SPEAK that provides
the external interface to input or output signals.
Hang Time:
The time for which the call remains connected after a DTMF event.
Filter Time:
Filter Time is defined as the minimum time that the signal must be asserted before it is
seen as valid. For example, if an input is configured to send a notification upon a falling
signal being asserted – say, when mains power to an irrigation system fails – and the
Filter Time has been set to ten seconds, the notification will only be sent if the falling
edge signal has been present for at least ten seconds.
Blanking Time:
This refers to the minimum or ‘cool down’ period before an asserted input will respond to
any subsequent assertions. For example, an input’s Blanking Time has been set to one
hour and the input gets asserted and sends an SMS notification. One minute later, the
input is asserted again. This second assertion will be ignored until an hour has passed.
page 4
2. General Description
The G-SPEAK Classic and G-SPEAK Classic+ are GSM-based intercom systems with
advanced functionality. The system comprises two components, namely a Calling Module,
which is typically mounted on the wall or a gooseneck outside the property, and a
GSM Controller that is typically mounted inside the property, typically inside a gate motor
housing. The two components are connected to each other via six wires, and allow
communication between a visitor at the Calling Module and the homeowner’s phone
through the use of GSM (Global System for Mobile Communications) technology.
Main Features
1. Communicate wirelessly
With the G-SPEAK range of audio GSM intercoms, the user’s mobile phone or landline
becomes the handset, resulting in a significant saving in installation costs.
This functionality enables the user to answer the intercom and open the gate from
anywhere in the world with GSM network coverage. Two independent LED-backlit call
buttons can be used to call up to four* pre-programmed landline or mobile phone
numbers.
2. Control up to four devices
Once the call is connected, the Called Party can activate up to four* different outputs
using DTMF (Dual-Tone Multi-Frequency) signalling. This means that the user can, for
example, open the gate for a visitor by pressing the number 1 key on his phone, or
press 2 to open the pedestrian gate, etc.
3. Configurable channels
Each output can be independently configured for either pulsed or latching operation,
and the pulse time is configurable per output. This is useful in cases where the gate
needs to be kept open for a period of time, for example to allow a truck or car and
trailer into the property. The unit can be programmed to allow up to 100* users to
activate one of the outputs via a Missed Call from their phone. In addition,
the G-SPEAK Classic+ allows each of the four channels to be configured as either an
input or an output – when configured as an input, a pre-defined SMS can be sent to
selected users upon input activation and inputs also allow for Filter and Blanking times
to be set.
4. Multiple user settings
Configurable ring and call durations allow the unit to be customised to an individual’s
needs, and volume at the Calling Module can be set by using the Call Buttons.
See page 24 for detailed instructions.
5. High-security features
The unit can also be used as a listening-in device* to survey the area around the
Calling Module (usually located outside the property). When this functionality is used,
the Calling Module speaker is muted.
6. User-friendly terminals
The innovative design of the Calling Module’s spring-loaded terminals makes wiring
quick, easy and entirely hassle-free. Simply use a terminal screwdriver to push the
mechanism down, insert the wire and release. The wire will be held securely in place.
Depends on model (G-SPEAK Classic allows one number per Call Button, plus one output with ten users;
while G-SPEAK Classic+ allows two numbers per Call Button, plus four input/outputs with 100 users.)
page 5
3. Specifications
120mm
116mm
Physical Dimensions
www.centsys.com
67mm
33mm
20mm
FIGURE 1. OVERALL DIMENSIONS FOR GSM CONTROLLER
32mm
138mm
74mm
FIGURE 2. OVERALL DIMENSIONS FOR THE CALLING MODULE
page 6
Technical Specifications
Physical
G-SPEAK CLASSIC
G-SPEAK CLASSIC+
10V - 30V DC
Input voltage
Quiescent 30mA maximum 300mA
Current draw
Two
Call buttons on Calling Module
Yes
Call confirmation at Calling Module
Adjustable at Calling Module using Call Buttons
Speech volume
6 wires, min 0.2mm²; Maximum 10m between
Wiring requirements (between
Calling Module and GSM Controller
Calling Module and Controller)
Four - individually configurable
Channels
One - output only
as either In or Out
Rising edge/falling edge
Not applicable
Input activation
/both
0.1s - 24 hours
Not applicable
Input filter
(in milliseconds)
0.1s - 24 hours
Not applicable
Input blanking
(in milliseconds)
Output pulse time range
1 milliseconds - 24hrs (adjustable in milliseconds)
Network compatibility
SIM card required
Airtime required
Operating temperature
Calling Module illumination
Housing material
IP rating
Surge protection
Yes
Yes
Yes
-20°C to +50°C
Call Buttons and labels with backlit white LEDs
ABS
IP55
Yes
Functional Specifications
Function
Ability to switch/monitor
devices and functions
Number of users
Special functionality
G-SPEAK Classic
G-SPEAK Classic+
Four inputs/outputs to activate
One output to activate device or monitor devices /functions
(individually configurable)
Up to four Voice Phones
Up to two Voice Phones, plus (two per Call Button)
Up to ten Switch Phones
Up to 100 Switch Phones
Talk Mode (Activate via SMS
from Voice Phone)
Listen Mode (Activate via SMS
from Voice Phone)
SMS activation of outputs
Systems Status query
Yes, via SMS (SMS from Voice Phone)
Systems Settings query
Yes, via SMS (SMS from Voice Phone)
Notification
Battery-low/volume changed/
password reset/firmware upgrade
page 7
4. Product Identification
1
4
5
2
3
FIGURE 3. GSM CONTROLLER INTERIOR
1.
2.
3.
4.
5.
GSM Module
Input/output terminals
SIM card holder
Voice communications terminals
Antenna
page 8
1
2
3
4
5
FIGURE 4. CALLING MODULE INTERIOR
1.
2.
3.
4.
5.
Speaker
Voice communication terminals
Call Button 1
Call Button 2
Microphone
page 9
5. Required Tools and Equipment
 Screwdriver – 3.5mm flat
 Side cutter
 Drill bits – 5mm masonry; 6mm drill bit
 Silicone sealant
 Fasteners and rawl plugs
 Six metres of n6 core communication cable
6. Mounting Instructions
Important Considerations

All users calling or sending an SMS to the Module need to ensure that their Caller Line
Identification Presentation (CLIP) is activated on their phone to ensure that the
Module recognises the user’s learned-in phone number

If a contract SIM card is being used in the Module itself, CLIP must also be enabled
on that SIM card. This can be done by first inserting the SIM card into a mobile
phone and enabling CLIP

Ensure that the SIM card in the GSM Module does not have Call Forwarding enabled

The SIM card in the GSM Module must have the PIN (Personal Identification Number)
code disabled
Calling Module Mounting
Wall mounting recommendations
Position the Calling Module on
wall adjacent to entrance gate or
door

Mount at a height that allows for
comfortably speaking into the
microphone

A typically recommended height
is shown in Figure 5
Calling
Module
1600mm

FIGURE 5.
Gooseneck mounting recommendations

Ensure that the Calling Module
does not protrude too far into
the driveway

The Calling Module must not be
set too far back and must be
easily accessed from a vehicle

The height should allow for
comfortably speaking into the
microphone
Calling
Module
FIGURE 6.
page 10
18mm
Dimensions of the Calling Module base
and mounting holes relative to the
Calling Module cover
110mm

138mm
Dimensions
74mm
FIGURE 7.
Mounting Instructions
Lift
Calling
Module
cover
1. Lift off the outer cover of the Calling
Module as shown in Figure 8.
FIGURE 8.
Screwdriver
Calling
Module
2. Insert screwdriver as shown and unclip
the Calling Module from base.
Calling
Module
base
FIGURE 9.
page 11
Calling
Module
3. Lift the Calling Module off base.
Calling
Module
base
4. Hold the Calling Module base against the
wall at the required height, ensuring that
it is vertical.
FIGURE 10.
5. Mark the location of the mounting holes.
Rawlplug
6. Using a 5mm masonry bit, drill holes into
the wall for the rawlplugs provided in the
kit.
Calling
Module
7. If the cable is being routed into the unit
from a concealed conduit behind the
base, knock out one of the cable entry
holes provided in the base and feed
through the cable. Ensure that at least
100mm of cable extends out of the wall.
Mounting hole
Sealing
washer
Mounting
screw
Cable
8. Fit sealing washer onto the mounting
screw before installing as shown in
Figure 11.
9. Screw the base firmly into position and
using the slots provided in the mounting
holes, adjust the base to be perfectly
vertical.
10. Ensure that sealing washer is fitted and
closes off the mounting hole to prevent
water ingress as shown in Figure 12.
FIGURE 11.
Sealing washer
Mounting
screw
FIGURE 12.
page 12
Calling
Module
11. Run the cable through the Calling Module
base and then hook the Calling Module
into the base as shown in Figure 13 and
clip back into position.
Cable
Calling
Module
base
FIGURE 13.
12. Terminate cable onto the voice
communication terminal. Refer to wiring
diagram in Figure 30 for details.
Voice
communication
terminals
Cable
FIGURE 14.
13. If the cable is surface-mounted, route
the cable into the unit from underneath
as shown and terminate onto the voice
communication terminal. Refer to the
wiring diagram in Figure 33 for details.
14. Write Call Button labels, insert into
lens(es) and clip lens(es) back onto
chassis as shown in Figure 15.
Voice
communication
terminals
Lens
Cable
Labels
FIGURE 15.
page 13
Calling
Module
cover
15. Clip the outer cover back into position.
It will be necessary when
commissioning the unit to have
the cover removed.
FIGURE 16.
16. Secure the cover using the fixing screw
provided in kit.
Screw
FIGURE 17.
page 14
GSM Controller Mounting
The GSM Controller will typically be housed inside the enclosure of the device it is to
control, for instance a gate motor. However, it can be mounted onto a wall or other
structure by following the instructions below:
GSM
Controller
1. Insert screwdriver into slot on the
GSM Controller and twist.
Slot
Screwdriver
FIGURE 18.
Cover
2. Remove the cover and unclip and remove
the circuit board from the retaining clips.
Circuit
board
FIGURE 19.
Mounting surface
3. Mark position of the unit against the
mounting surface.
Fastener
4. Using a 5mm masonry bit, drill a hole
into mounting surface.
5. Mount the unit using suitable fasteners.
Mounting
hole
FIGURE 20.
page 15
6. Use a 6mm drill bit to open the required
cable entry hole.
Cable
entry
hole
6mm drill bit
FIGURE 21.
Ensure sufficient cable is provided
for to reach the terminals of both
the I/O terminals and the voice
communication terminals
Cover
7. Fix the cable to the wall using cable
saddles.
8. Seal all the holes with silicone sealant.
9. Re-insert the circuit board and ensure
that the retaining clips are holding it in
place
Cable
saddles
Power
cable
CircuitVoice
board
communication
cable
FIGURE 22.
Inserting an Activated
SIM Card
Ensure that the activated SIM card
going into the Module for the first
time is not PIN protected
1. Slide the SIM card housing’s locking
mechanism up to release the housing.
Do not use a screwdriver to open
the SIM Card locking mechanism.
FIGURE 23.
page 16
2. Raise the SIM card housing as shown in
Figure 24.
FIGURE 24.
3. Insert the activated SIM card and ensure
that the SIM card is correctly oriented.
Align the cropped corner to be in the
correct position as per the diagram on
the circuit board.
Cover
Circuit
board
FIGURE 25.
4. Once the SIM card is inserted correctly in
the SIM card housing, lower the housing
onto the circuit board. Then slide the
SIM card housing locking mechanism
down to ensure that the SIM card
housing is securely locked in place.
Do not use a screwdriver to close
the SIM Card locking mechanism.
FIGURE 26.
page 17
GSM controller
cover
5. Hook the top of the edge of the cover
onto the top of the unit.
6. Lower the cover and press securely into
position.
FIGURE 27.
page 18
7. Wiring Diagrams
P3
P4
P5
Data
communication
lines
P6
I03
GND 12V-24V
Power supply
10V - 30V DC
GND I02
Inputs/outputs
1 and 2
I04 I03
Inputs/outputs
3 and 4
P2 P1
G-SPEAK
P3
P4
P5
P6
Data
communication
lines
P2
P1
FIGURE 28. GSM CONTROLLER
FIGURE 29. CALLING MODULE
page 19
Solenoid
lock
GND 12V-24V
P2
P5
I03
P4
P3
P5
103
P4
GND 102
P6
103
P3
104
GND I02
P2
P1
P1
I04 I03
P6
GND 12V-24V
GSM controller
P1
D5-Evo
P5
P4
P3
Description
Colour
Power + and Call
Power - and Call
Speaker 1
Speaker 2
Mic 1
Mic 2
Calling
Module
P6
Terminal
P1
P2
P3
P4
P5
P6
P2
Use the table below for colour allocation
when connecting the wires
It is recommended that 0.5mm2
multi-stranded shielded cable is used
FIGURE 30. WIRING DIAGRAM
page 20
8. GSM Network Signal Detection
When powered up, the G-SPEAK will beep three times and the signal strength indicator
LEDs will light up indicating the GSM network signal strength. The GSM signal strength
can be determined based upon the combination of the three LEDs that illuminate:
3
5
2
3
1
1
4
LEDs
2
Signal
strength
indicator
FIGURE 31. GSM MODULE
The GSM signal strength may be
enhanced by repositioning the
antenna. Ideally the antenna
should be mounted externally, and
away from any sensitive electrical
components.
The rear side of the antenna has a
double-sided tape backing, which
may be used to affix the antenna
to a desirable location. Please
ensure that the surface to which
you affix the antenna is smooth,
clean and dry, to ensure reliable
adhesion
Illuminated LEDs
3
2+3
2
1+2
1
Signal strength
5/5
4/5
3/5
2/5
1/5
Antenna
Adhesive cover
10. Power up the Module, hold the antenna
and locate a position where there is
optimum GSM signal. Remove the
adhesive cover at the back of the
antenna and mount.
Keep the antenna away from the
microphone
FIGURE 32
page 21
9. G-SPEAK Functionality
www.centsys.com
FIGURE 33.
The G-SPEAK range offers both voice and signalling functionality, each of which provides
its own unique feature-set and capabilities including communication, switching and
monitoring. The units are programmed via SMS command strings sent from a standard
mobile phone.
Categories of Learned-in Phones
A clear distinction must be made between a Voice Phone and a Switch Phone.
Voice Phone
A Voice Phone pertains specifically to the intercom functionality of the G-SPEAK system,
and is any learned-in phone with the ability to communicate by voice with the Calling
Module, but is also capable of activating any of the outputs during a call using DTMF
signalling.
Switch Phone
A Switch Phone is a learned-in phone that is capable of exercising some influence upon
the outputs of the controller via GSM switching and does not necessarily possess Voice
Phone Functionality, though it can be learned-in for both.
Both of these unique operating modes are discussed in more detail in the sections that
follow.
Voice Phone Functionality
The Calling Module has two Call Buttons. Each button is associated with either one Voice
Phone in the case of the G-SPEAK Classic, or two Voice Phones in the case of the
G-SPEAK Classic+, where at least one of which will need to be programmed before the
unit can be used to initiate a call (refer to the List of Commands). When a Call Button is
pressed, the Calling Module will emit either a call tone to indicate that a call is being
initiated, or three low-pitched beeps to indicate that no number is associated with that
Call Button.
page 22
There will be a delay of up to ten seconds while the call connects, after which a ringtone
will be heard from the Calling Module. Once answered by the Called Party, the call will
end after either:
1. The call duration has expired (the default call duration is 30 seconds).
2. The call is terminated by pressing either of the Call Buttons on the Calling Module.
3. The call is terminated by the Called Party.
4. The hang time (the time for which the call remains connected before disconnecting
after a DTMF tone) expires. The default hang time is 15 seconds.
Three beeps from the Calling Module indicate that the call has ended.
While the call is in progress, the Called Party can activate the one output on the
G-SPEAK Classic, or any of the four outputs on the G-SPEAK Classic+ by pressing 1,
2, 3 or 4 on their phone keypad. This DTMF event will trigger the hang timer, and the call
will automatically terminate after the hang time has expired, regardless of the call
duration up to that point.
Three configurable call parameters can be customised by the user (see List of
Commands):
1. Call duration – The maximum call length (Range 10 seconds - 60 seconds, default is
30 seconds).
2. Ring time – The time for which the Called Phone will ring before the Calling Module
disconnects (G-SPEAK Classic), or tries the second number
(G-SPEAK Classic+) (range 10 seconds – 60 seconds, default 15 seconds).
3. Hang time – The time for which the call remains connected after a DTMF event
(range 2 seconds - 30 seconds, default is 15 seconds).
Adjusting the Calling Module volume
The Calling Module volume can be changed (between 10% and 80%) by following these
steps:
1. Press both Call Buttons simultaneously,
2. Wait for two beeps.
3. Use the Call Button 1 to increase the volume (10% per press), or Call Button 2 to
decrease the volume (10% per press). On each press, a beep will be heard with the
new volume.
4. When done, press both buttons again simultaneously (or wait 30 seconds).
5. The Calling Module will beep twice, and an SMS will be sent to the first Voice Phone
number assigned to Button 1, indicating that the volume has been changed.
page 23
Switch Phone Functionality
The GSM Controller has capacity for ten Switch Phone numbers in the case of the
G-SPEAK Classic, or 100 Switch Phone numbers in the case of the G-SPEAK Classic+,
each of which can activate one or more (in the case of the G-SPEAK Classic+) outputs
by Missed Call or SMS. Numbers are added using the AP command (see, List of
Commands). These numbers are not to be confused with the Voice numbers referred to
in the Voice Functionality section.
A user’s number can be programmed as both a Voice Phone and a Switch
Phone.
Voice Phone
Switch Phone
Voice communication
with mobile
Yes
No
Switches outputs via
DTMF (phone keypad during call)
Missed call, SMS
Receives notification of No
input activation
Yes (G-SPEAK Classic+
only)
Receives notification of Yes (Any Voice number subscribed
to system notification)
password reset
No
Receives notification of Yes (Any Voice number subscribed
to system notification)
firmware upgrade
No
Yes (G-SPEAK Classic+ only)
No
Talk
Yes (G-SPEAK Classic+ only)
No
Settings
Yes
No
Listen
Changing the Default Password
The G-SPEAK leaves the factory with a default password of 1234. The password is used
to prevent unauthorised users from changing settings, and adding new numbers. It is
recommended that the default password is changed (see List of Commands in this
section), and a record stored in a safe place.
Resetting the Password to Default
If the password is forgotten, it may be reset to 1234 by removing power from the unit,
bridging the inner pins of the bootloader header with a suitable terminal jumper, and
powering up. Remove the jumper, and wait for the LEDs to go off – an SMS will be sent
to the first Voice Phone learned into Button 1, indicating that the password has been
reset to 1234.
List of Commands
(for SMS configuration and administration of the controller)
The following command sets may be used to SMS the respective configuration
settings to the controller. The SMSs will need to be sent to the number of the
SIM card in the controller.
In the examples on the next page, ‘xxxx’ represents the Controller’s password(see
Changing the Default Password)
page 24
SMS Command Confirmation
If you would like confirmation that your SMS command has been successfully received by
the G-SPEAK, simply append a space and then the letters ‘ACK’ to the end of the
command set in the SMS message. For example: P.xxxx.AB.0821234567 will simply
add phone number 082 123 4567 and assigns it to Button 1; however,
P.xxxx.AB.0821234567 ACK will do the same but you will also receive an SMS
back from the G-SPEAK that reads ‘AB OK’ confirming that the Add Button command
has been successfully executed.
Audible Command Confirmation
The Calling Module will also provide audible feedback and confirmation of commands
received:
 One beep if the command is accepted and valid

Two beeps if a syntax error is present

Three beeps if the command is sent from a number that is not a Voice number or
if the command is sent with an incorrect password
Adding a New Voice Phone to a Call Button
Command ‘AB’
As described in the Voice Phone Functionality section, a Voice Phone will be called when
either of the two Call Buttons are pressed and is able to activate the outputs by pressing
1, 2, 3 or 4 on the phone keypad. This command set essentially assigns a phone number
to a Call Button.
AB
Examples
Description
Parameters
Adds a new Voice Phone number
to be called when a specific Call
Button is pressed
Phone number(s) (up to 16
digits each)
Call Button BU (1 or 2)
N – Subscribe to System
Notifications
(commands have been highlighted for clarity)
Command
Description
P.xxxx.AB.0821234567.BU1
Adds phone number 082 123 4567 and
assigns to Button 1. Does NOT add phone to
Switch Phone database.
P.xxxx.AB.0821234568.BU1.2.N
Adds phone number 082 123 4568 and
assigns it to Button 1 as the second number to
be called. System Notifications will be sent to
this Voice number. (Classic+ only). Does NOT
add phone to Switch Phone database.
page 25
Retrieve List of Voice Phone Numbers Assigned
to a Call Button
Command ‘LB’
Description
Lists the Voice numbers assigned
to each button
LB
Examples
Parameters
None
(commands have been highlighted for clarity)
Command
Description
P.xxxx.LB
Sends an SMS to the originating number
listing the Voice Phone numbers assigned to
each button
Adding a New Switch Phone
Command ‘AP’
As described in the Switch Phone Functionality Section, a Switch Phone is able to activate
any of the controller’s outputs via a Missed Call (both models) or SMS (Classic+ only).
Any of the Switch Phones, where configured, can turn on or off any of the outputs by
sending the text message OUx ON or OUx OFF to the G-SPEAK (the ‘x’ in the command
string represents the output number referred to). If configured, the output name can be
used instead of OUx. Turning on a pulsed output will cause it to trigger, while turning it
off will have no effect. Example:
Output 1 of a G-SPEAK Classic+ has been assigned the name ALARM (using the
command string documented in the Configuration Settings section). The output can be
activated by sending an SMS with the text ‘ALARM ON’ (no quotation marks) to the
device from a Switch Phone configured for SMS activation. Likewise, the output can be
deactivated (the alarm disarmed) by sending an SMS with the text ‘ALARM OFF’ (no
quotation marks) to the unit.
Description
Parameters
 Phone number(s) (up to 16
digits each)
 Output to be activated via
a Missed Call
 (OU1/OU2/OU3/OU4)
AP
Adds a new Switch Phone to
activate the controller’s
output(s) via a Missed Call or
SMS (Classic+ only)
 Output to be activated via
an SMS
 (OU1S/OU2S/OU3S/OU4S)
 Input event to be
monitored (IN1R/F/B, IN2
R/F/B, IN3 R/F/B, IN4
R/F/B)
 Rising or falling input
event,
G-SPEAK Classic+ only
page 26
(R, F, or B)
Examples
(commands have been highlighted for clarity)
Description
Command
P.xxxx.AP.0821234567
P.xxxx.AP.0821234567.OU2
P.xxxx.AP.0821234567.
0821234568.0821234569.
0821234566.OU3
P.xxxx.AP.0841234567.OU2.OU4
P.xxxx.0821234567.OU1.
OU2S.IN1R
Adds phone number 082 123 4567 and, since
no output is specified, automatically assigns it
to activate Output 1
Adds phone number 082 123 4567 and
assigns it to activate Output 2
Add phone numbers 0821234566,
0821234567, 0821234568 and 0821234569
and assign all to activate Output 3 via a
Missed Call
Adds phone number 0841234567 to the
system, and assigns Output 2 and Output 4 to
be activated by a Missed Call
Configures Output 1 to react to Missed Calls
and Output 2 to react to SMSs, and subscribes
the number 082 123 4567 to receive SMS
notifications when Input 1 rises
Deleting a Voice Phone
Command ‘DB’
This command deletes all Voice Phone numbers assigned to specific Call Buttons from the
system, i.e. it stops a number from being called when a button is pressed.
DB
Examples
Description
Parameters
Removes the specified Voice
Phones assigned to Call Buttons
from the system.
 Phone number(s) (up to 16
digits each)
 Call Button BU (1 or 2)
(commands have been highlighted for clarity)
Command
Description
P.xxxx.DB.BU1
Delete and clear all Voice Phones assigned to
Button 1
P.xxxx.DB.BU2.1
Deletes only Voice Phone number 1 from
Button 2
Deleting a Switch Phone
Command ‘DP’
This command allows one or more Switch Phone numbers to be deleted from the system.
DP
Description
Parameters
Removes the specified Switch
Phones from the system
Phone number(s) (up to 16
digits each)
page 27
Examples
(commands have been highlighted for clarity)
Command
Description
P.xxxx.DP.0821234567
Delete phone number 0821234567
P.xxxx.DP.0821234567.
0821234568.0821234569.
0821234566
Delete phone numbers 0821234567,
0821234568, 0821234569 and 0821234566
Airtime
Command ‘AT’
This command allows an airtime voucher to be loaded onto the controller, or remaining
airtime to be queried.
Since a voice transaction is initiated once a Call Button is pressed, there needs
to be sufficient airtime on the controller SIM card at any given stage.
AT
Examples
Description
Parameters
Loads or queries airtime.
Requires knowledge of the
network specific USSD codes for
airtime recharge and query.
 Load airtime (L)
 Query airtime (Q)
Sub-parameters:
Network specific USSD code
(commands have been highlighted for clarity)
Command
Description
P.xxxx.AT.L.*100*01*1234567890#
Loads airtime voucher number 1234567890
onto a Vodacom SIM card
P.xxxx.AT.L.*102*1234567890#
Loads airtime voucher number 1234567890
onto an MTN SIM card
P.xxxx.AT.Q.*100#
P.xxxx.AT.Q.*141#
P.xxxx.AT.Q.*188#
P.xxxx.AT.Q.*111*502#
P.xxxx.AT.Q.*101#
Airtime remaining on the Vodacom SIM card is
sent via SMS to the querying device
Airtime remaining on the MTN SIM card is
sent via SMS to the querying device
Airtime remaining on the 8ta SIM card is sent
via SMS to the querying device
Will reply back with airtime, SMS and data
bundle balances on the Vodacom SIM card
Airtime remaining on the Cell C SIM card is
sent via SMS to the querying device
Configuration Settings
Command ‘CO’
This command allows the functionality of the system to be configured. Outputs and inputs
can be set up (dependent on the model), call settings edited, passwords managed, etc.
page 28
More than one configuration setting can be applied/edited using a single SMS by
separating the commands with a full stop. In the case of the G-SPEAK Classic+ all I/Os
(configurable inputs and outputs) are defaulted as outputs and may be reconfigured to be
inputs, whereas the G-SPEAK Classic only has one output which cannot be configured
to be an input. Where channels have been set up to act as inputs only (G-SPEAK
CLASSIC+ only), further parameters can be set by specifying Filter and Blanking Times.
Filter and Blanking Time(G-SPEAK CLASSIC+ only)
Filter Time is defined as the minimum time that the signal must be asserted before it is
seen as valid. For example, if an input is configured to send a notification upon a falling
edge signal being asserted – say, when mains power to an irrigation system fails – and
the Filter Time has been set to ten seconds, the notification will only be sent if the falling
edge signal has been present for at least ten seconds.
Blanking Time, on the other hand, refers to the minimum or ‘cool down’ period before
an asserted input will respond to any subsequent assertions. For example, an input’s
Blanking Time has been set to one hour and the input gets asserted and sends an SMS
notification. One minute later, the input is asserted again. This second assertion will be
ignored until an hour has passed.
Description
Settings
Parameters
 CT (Call Time) – Sets the maximum
duration of the call (the call can be
terminated earlier by either party)
 RT (Ring Time)– Sets the time before
which the unit will disconnect if a call is
unanswered
CO
Configure inputs,
outputs and system Call
settings
 HT (Hang Time) – Sets the time for
which the call remains connected after
a DTMF event
Sub-parameters:
 Call time (seconds)

Ring time (seconds)
Hang time (seconds)
OU1PU – Sets Output 1 as pulsed

OU1LA – Sets Output 1 as latched
OU1PT – Sets Output 1 pulse time in
milliseconds
CO
Output
Settings
OU2PU – Sets Output 2 as pulsed
OU2LA – Sets Output 2 as latched
OU2PT – Sets Output 2 pulse time in
milliseconds
OU3PU – Sets Output 3 as pulsed
OU3LA – Sets Output 3 as latched
page 29
Description
Settings
Parameters
OU3PT – Sets Output 3 pulse time in
milliseconds
OU4PU – Sets Output 4 as pulsed
OU4LA – Sets Output 4 as latched
OU4PT – Sets Output 4 pulse time in
milliseconds
CO
Output
Settings
OU1N –
Sets an alternative name for
OU1
OU2N –
Sets an alternative name for
OU2
OU3N –
Sets an alternative name for
OU3
OU4N –
Sets an alternative name for
OU4
Sub-parameters:
 Pulse time (milliseconds) 1s = 1000ms

CO
Input
Settings
Output name (up to 31 characters
including spaces)
IN1 –
Input 1 configured as input
IN2 –
Input 2 configured as input
IN3 –
Input 3 configured as input
IN4 –
Input 4 configured as input
IN1FT –
Sets Input 1 Filter Time in
milliseconds
IN2FT –
Sets Input 2 Filter Time in
milliseconds
IN3FT –
Sets Input 3 Filter Time in
milliseconds
IN4FT –
Sets Input 4 Filter Time in
milliseconds
IN1BT –
Sets Input 1 Blanking Time in
milliseconds
IN2BT –
Sets Input 2 Blanking Time in
milliseconds
IN3BT –
Sets Input 3 Blanking Time in
milliseconds
IN4BT –
Sets Input 4 Blanking Time in
milliseconds
IN1FM – The message to be sent to
subscribed numbers when IN1
falls
page 30
Description
Settings
Parameters
IN1RM – The message to be sent to
subscribed numbers when IN1
rises
IN2FM – The message to be sent to
subscribed numbers when IN2
falls
AT
IN2RM – The message to be sent to
subscribed numbers when IN2
rises
IN3FM – The message to be sent to
subscribed numbers when IN3
falls
CO
Input
Settings
IN3RM – The message to be sent to
subscribed numbers when IN3
rises
IN4FM – The message to be sent to
subscribed numbers when IN4
falls
IN4RM – The message to be sent to
subscribed numbers when IN4
rises
Sub-parameters:
 Filter time (milliseconds) 1s = 1000ms

Blanking time (milliseconds)

Input text message (up to 31
characters including spaces)
NP – Sets a new system password
Sub-parameters:
CO
Security
Settings
Sub-parameters:
 New password (four digits)
Sub-parameters:
ALL – Deletes all Voice and Switch
numbers, and resets configuration
settings to Factory Defaults
CO
Reset
Options
USR – Deletes all users (Voice and Switch
numbers), and leaves all
configuration settings as is
CON – Resets all configuration settings to
Factory Defaults, and leaves all
users (Voice and Switch numbers)
as is
page 31
Examples
(commands have been highlighted for clarity)
Command
Description
P.xxxx.CO.NP.1333
Changes the current system password to 1333
P.xxxx.CO.CT.30
Sets the maximum call duration to 30 seconds
P.xxxx.CO.OU1PT.2000
Sets the pulse time of Output 1 to 2000ms (2s)
P.xxxx.CO.OU1LA.OU2PU.
OU2PT.5000
Configures Output 1 for latching operation,
sets Output 2 to be a pulsed output and sets
the pulse time to 5000ms (5s)
P.xxxx.CO.IN1.IN2.IN1FT.
500.IN1BT.30000
P.XXXX.CO.IN3.IN3FM.
“MAINS FAIL”
P.xxxx.CO.RESET.ALL
P.xxxx.CO.RESET.USR
P.xxxx.CO.RESET.CON
P.xxxx.CO.OU3.GATE TRIGGER
Configures Channel 1 and Channel 2 as inputs,
and sets the Input 1 Filter Time and Blanking
Time to 500ms and 30000ms respectively
Configures Channel 3 as an input and sets the
message to be sent to subscribed numbers
when Input 3 falls as “MAINS FAIL”
Deletes all Voice Phone and Switch Phone
numbers, and resets configuration settings to
Factory Defaults
Deletes all users (Voice Phone and Switch
Phone numbers), and leaves all configuration
settings as is
Resets all configuration settings to factory
defaults, and leaves all users (Voice Phone
and Switch Phone numbers) as is
Changes the name of Output 3 to GATE
TRIGGER
Commands can be concatenated, i.e. multiple commands sent in a single SMS,
by simply separating the commands with a space.
Command
Description
P.xxxx.CO.OU1LA DB.BU2.1
Configures Output 1 as a latching output AND
deletes Voice Phone number 1 from Button 2
P.xxxx.CO.NP.4545 AT.L.
*100*01*5686299345#
Changes the system password to 4545 AND
loads airtime voucher number 5686299345
onto a Vodacom SIM card
page 32
Special Commands
Any of the Voice Numbers can text the G-SPEAK with four special messages (depending
on the G-SPEAK model) to activate the following functions:
Command
LISTEN
TALK
STATUS
SETTINGS
Description
By SMSing ‘LISTEN’ to the G-SPEAK, the G-SPEAK will mute the
speaker on the Calling Module, and call the phone that sent the SMS,
allowing the Called Party to listen in on what is happening at the Calling
Module. Anyone at the Calling Module will be unaware that a call is in
progress and that they are being listened to. DTMF functionality is
available during this call, allowing the Called Party to activate any of
the outputs by pressing 1, 2, 3 or 4 on their phone keypad. In addition,
pressing* or # will reset the call duration timer, extending the call by
the call duration time.
By SMSing ‘TALK’ to the G-SPEAK, the G-SPEAK will call the phone
that sent the command, allowing the Called Party to talk to anyone at
the Calling Module. DTMF functionality is available during this call,
allowing the Called Party to activate any of the outputs by pressing
1,2,3 or 4 on their phone keypad. In addition, pressing* or # will reset
the call duration timer, extending the call by the call duration time.
By SMSing ‘STATUS’ to the G-SPEAK, the G-SPEAK will send an
SMS to the phone that sent the STATUS command, indicating
firmware version, serial number, signal strength, input and output
states, etc.
By SMSing ‘SETTINGS’ to the G-SPEAK, the G-SPEAK will send an
SMS to the phone that sent the SETTINGS command, indicating
system settings.
Classic+ only
* G-SPEAK
The Called Party will hear an alert tone ten seconds before the call timer expires
page 33
10. Installation Handover
Once the installation has been successfully completed and tested, it is important for the
installer to explain the operation and safety requirements of the system.
Centurion Systems (Pty) Ltd does not accept any liability caused by improper use of
the product, or for use other than that for which the automated system was designed.
page 34
Sharecall 0860-CENTURION (0860 236 887)
Head Office: +27 11 699 2400
Sharecall Technical Support 0861 003 123 or
+27 11 699 2481
from 07h00 to 18h00 (GMT+2)
(Sharecall numbers applicable when dialled from within South Africa only)
0.07.A.0190_27012014
www.CentSys.com