Topex MobiLink GSM User manual

TOPEX
USER’S MANUAL

MobiLink GSM User’s Manual
1
TOPEX is a group of Romanian companies, founded in
1990, by ten enthusiastic engineers experienced in
telecommunications. Its activity is directed to the research,
development and production of telecom equipment as well as
service. Very quickly, TOPEX become the most important
manufacturer of communications solutions for small to large
companies as well as for telecommunications operators and
providers in Romania. Our company designs equipment for all
existing mobile systems (GSM, CDMA), including 3G
technology.
Due to our innovation power, authentic flexibility, real respect
for our parteners and the secure solutions that we provide
TOPEX extended its business worldwide. Currently TOPEX
delivers its products through its distributors to: Spain, France,
Russia, UK, Turkey, Netherlands, Greece, Republic of Moldova,
Bulgaria, Nigeria, etc.In order to achieve effective and flawless
manufacturing for its products, TOPEX has carefully organized
its Research and Development Department along with its
production facility. This allows TOPEX to have maximum control
of all the processes involved in the complex operations related
to high-technology electronic manufacturing. Currently, 25
percent of Topex personnel are part of R&D Department and
their number is increasing.
TOPEX also considered the training and the service as an
integral part of the solutions it provides. Therefore,
comprehensive training sessions are held at the Topex factory,
complimentary for the company’s clients. Service is also
provided via Internet, as all Topex solutions are designed
especially to allow this, at the lowest cost.
TOPEX has implemented the quality management system
according ISO9001 standard certified by SRAC since 1997,
respectively by IQNET since 2002. In 2001 TOPEX become a
sector member of I.T.U. (International Telecommunication
Union). The main lines of products of our company are:
-GSM/GPRS/UMTS interfaces (analog, ISDN BRI and PRI,
GSM VoIP gateway)
-CDMA2000 interfaces (voice/data, LAN, EV-DO gateway,
GPS, miniature)
-VoIP gateways (basic, GSM, advanced)
-Custom systems for special applications (air traffic control,
railway dispatching center)
-Phone exchanges (analog, digital, private/rural, IP PBX,
protocol converters)
The TOPEX Group is represented by a wide network of
distributors who have taken over part of the local activities of market
promotion, installing and setting to work, maintenance during the
warranty period and post-guarantee. For more updated and detailed
information, please visit our website at www.topex.ro.

MobiLink GSM User’s Manual
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CONTENT:
1. What is MobiLink GSM ? ………………………… 3
2. Package content ………………….…………….. 4
3. Installation………………………………………….. 5
3.1. Identifying the connectors……………………….. 5
3.2. Configuring the SIM card …………………..…… 5
3.3. Inserting the SIM card ……………………..……. 6
3.4. Connecting the cables…………………………… 7
3.5. Installing the external antenna……………….…… 10
3.6. Significance of LED indicators………..…….…….. 9
3.7. Pinout for the RJ11 connector…………. .............. 9
3.8. Achieving a voice link………. ……………………. 11
3.9. Mounting the equipment…….…………………… 12
3.10. Installing the OAM program ……………….... 12
4. Technical specifications…………………………. 15
4.1. Operating conditions ………………………….. 15
5. Applications……………………………………… 16

MobiLink GSM User’s Manual
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1. What is MobiLink GSM?
It is an interface for your profit! By interfacing between a
phone exchange and the GSM 900/1800 mobile telephony
network it cuts down the costs of fixed-to-GSM and GSM–to-
fixed calls.
MobiLink achieves a direct link between a trunk of the
phone central and the GSM 900/1800 mobile network. By
using the PBX facility of automatically routing the calls
depending upon prefix, any call from an extension to a
mobile phone in the GSM network will get out through the
trunk on which MobiLink was installed. This way you will pay
just the cost of a mobile-to-mobile call inside the same
network, instead of the cost of fixed-to-mobile call.
Also, for any call issued from a GSM phone towards the
number of the MobiLink unit connected to the PBX, you may
call any local subscriber you want, still paying only the cost of
a mobile-to-mobile call inside the GSM network instead of
being billed for a mobile-to-fixed call.

MobiLink GSM User’s Manual
2. PACKAGE CONTENT:
MobiLink equipment
Flat phone cable fitted with
RJ11 connectors for
connecting MobiLink to the
phone exchange (PBX)
Serial cable (with RJ45 and
DB9 connectors) for
configuring
External antenna with
magnetic base and
connecting cable
Floppy-disk, which contains
the configuring program
- Assembly kit
- User`s Manual
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MobiLink GSM User’s Manual
3. INSTALLATION:
3.1. Identifying the connectors
The three connectors are located on the bottom panel of the
MobiLink equipment
Figure 1: Identifying the connectors
ALIM – female jack type connector for the power supply adapter;
RS232 – female RJ45 connector for serial connection (configuring,
data transfer);
TEL – female RJ-11 connector for the flat cable that links MobiLink
to a trunk of the PBX or an analog phone;
3.2. Configuring the SIM card
The SIM card that will be used with MobiLink must be activated by
the GSM operator. Also, it must be properly configured before
insertion in the GSM module of the equipment. The configuration of
the SIM card can be performed using any GSM mobile phone.
Settings for configuration of the SIM card
Description Option
)Disable PIN code required
)Select “OFF” for “Dial again –
Interval”. If this option exists
)Select “OFF” for “Auto
Answering” required
)Select “OFF” for “Call Waiting” required
0 If the SIM card is not properly configured, or if it has not been
activated in the network of your GSM carrier, then the MobiLink
equipment will not work.
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MobiLink GSM User’s Manual
3.3 Inserting the SIM card
MobiLink GSM uses SIM cards. The SIM card must be inserted in
the special slot of the equipment. This slot, where the SIM cards
are inserted, is situated on the right side of the equipment, under
the LEDs.
For inserting or to extract the SIM cards, you must use the mobile
support tray, which is activated with a little yellow button. Note:
Because of its small dimensions, the button can be pushed with an
object with a sharp point (keys, pens, and screwdriver).
! Please manipulate the SIM cards carefully!
For each SIM card, follow these steps:
Push the button for extracting the support for the SIM card.
Extract the support for the SIM card!
6
Insert the card in the special support tray, as shown in the drawing
below!

MobiLink GSM User’s Manual
Then insert the support in the MobiLink equipment, from where it
was extracted!
These steps are also to be followed if you want to change a SIM
card with other one.
Warning!
Using an inactive SIM card or an incorrectly configured one may
causes a bad functioning of the Mobilink equipment
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MobiLink GSM User’s Manual
3.4 Connecting the cables
1. Insert one end of the phone cable in the TEL connector of the
MobiLink while the other end of the cable must be connected
to a trunk of the PBX. If the phone exchange does not have a
RJ11 connector available, you may connect directly to the two
wires coming from the PBX.
Always use the two center wires of the cable. Both ends of the
phone cable shipped in the MobiLink package are fitted with
male RJ11 connectors.
2. Insert the RJ45 end of the special serial cable into the “RS23”
connector of MobiLink. The other end (with DB9) must be
inserted into the COM port of the PC used for configuration.
3. Insert the jack of the power supply adapter into the ALIM
connector and then plug the adapter into the receptacle of the
230V ac mains outlet.
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MobiLink GSM User’s Manual
Figure 3: Connecting the cables
Warning! To avoid accidents or damage to the equipment, follow the
installation steps described earlier. The supply adapter must be the
last connection made. You should NOT connect the cable for phone
or PBX while the MobiLink GSM unit is powered.
3.5. Installing the external antenna
You can use the magnetic base
antenna that is part of the MobiLink
package or a stick antenna. The
stick or external antenna must be
threaded to the RF connector
located on top of the MobiLink GSM
unit, as shown to the right.
Tighten the connector by hand, don’t
use excessive force!
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MobiLink GSM User’s Manual
3.6. Significance of LED indicators
The MobiLink GSM equipment has three LEDs
as optical status indicators, as shown in figure 3
to the right.
Their colors are red, orange and green, and
they also have symbols: phone, network/level,
power
Location of the status LEDs
Significance of the red LED indicator
The indicator signals the status of the equipment and the existence
of a voice connection.
Status Significance
Blinking, with one
second period,
symmetrically
At start, the blinking at 500 ms on, 500 ms off
shows that the GSM module is initiating.
Blinking, with 320
ms, symmetrically
In the initialization state, the equipment waits
the PIN code. You can enter the PIN code
using a telephone connected to the FxS
interface (Which must be activated). If the
Status LED blinks with 160 ms on, 160 ms off,
it means that the SIM card has activated the
"PIN code request" option and the SIM code
value is different that the value which is
recorded in the equipment.
Red blinking,
with 160 ms,
symmetrically
You have entered a wrong PIN code!
MobiLink requires the PUK code and blinks
very fast. If the PIN code has been entered
incorrectly three times, the SIM card asks the
for PUK code. The LED lights on and blinks:
80 ms ON, 80 ms OFF
light off The module is initiated and the telephone
interface is in stand-by (there is no voice
connection).
light on
continually The telephone interface is activated, a voice
connection is initiated.
Note: If the number is dialed in “pulse mode” then the Status LED
will be lighting on and off, signaling the dialing of each digit over the
interface.
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MobiLink GSM User’s Manual
Significance of the yellow LED indicator
This LED indicator has also multiple significances: information
about the mobile network (registering, signal level) and shows the
serial port activity (data transfer). It is located between the red and
the green indicators, and it’s colored in yellow.
Status Significance
Numbers of
blinks
Blinks only one time: – the GSM module is
not registered in the network!
Blinks two times – the module is registered,
but is no activity in the network
Blinks three times – the module is registered,
and there is data activity in the network
Period of blink
Indicates the signal level: the longer the
period is, the higher signal level you have:
(120ms=under -96dBm, 240ms= -96 … -
85dBm, 400msec=over-85dBm)
Lights on or off,
continually
This should not happen in normal operation, it
shows that the equipment is not working
properly!
Significance of the green LED indicator
The green indicator shows the presence of the supply voltage,
necessary for a properly functioning.
Status Significance
Light on The supply voltage is present – 5V D.C.
Light off There is no supply voltage – 5V D.C
3.7. Pinout for the RJ 11 connector
The MobiLink package includes a 4-wire flat
telephone cable fitted at both ends with standard
male RJ11 connectors. Out of the 4 wires only
the two central conductors, on pins 2 and 3 are
used (the polarity does not matter).
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MobiLink GSM User’s Manual
3.8. Achieving a voice link
MobiLink has a FXS telephony interface, labeled “TEL”. This may
be connected to either:
-An analog trunk of a standard PBX (as shown in figure 3)
-Directly to a standard (fixed) analog telephone (see figure 5)
Figure 5: Connecting a fixed phone
0 WARNING! MobiLink must be connected via its “TEL” connector
to a trunk output of the PBX (private branch exchange). It is strictly
forbidden to connect it to a:
-PSTN trunk (the trunk of a public branch exchange)
-local subscriber line of the PBX
-Direct line from the public telephony carrier. Doing so
damages the MobiLink equipment and voids the warranty..
A voice connection may be initialized when the MobiLink equipment
generates disc tone (continuous tone with the frequency of 450 Hz).
This corresponds to the LED „Voice” lighting up.
The phone or PBX trunk may send the call number to the Topex
MobiLink unit in "Tone" (DTMF) mode or in “Pulse” mode. After dialing
the last figure, after a 5-second delay, the number dialed is sent by
the MobiLink interface to its internal wireless modem for the GSM
network.
If you want the call number to be sent out immediately to the modem,
after the last figure of the number you must dial "#" in "Tone" mode.
The maximum number of figures allowed for dialing is 16.
If there is no serial communication between the MobiLink interface
and the GSM modem or if the modem module is not the coverage
area, MobiLink will generate a warning sound by chopping in cadence
a 450 Hz signal this way: 200 ms tone, 100 ms pause, 200 ms tone,
500 ms pause.
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MobiLink GSM User’s Manual
3.9. Mounting the MobiLink GSM equipment
The equipment must be mounted in a location with maximum strength
of the received signal. It can be placed either in vertical position on a
wall or horizontally on a desk or in a shelf.
MobiLink must be located as far as possible from equipment that is
sensitive to electromagnetic interferences (radios, audio or video
appliances, computer monitor, TV receivers etc) or from equipment
that may generate high electromagnetic fields (electric engines,
heaters, copiers and so on).
For mounting MobiLink on a wall you must perform the following
steps:
- mark the position of a pair of holes on
the wall, spaced at 55 mm apart
- drill the holes in the wall
- forcibly insert into the holes the plastic
dowels
- thread the metallic woodscrews into
the plastic dowels leaving the end to
protrude outside for some 5 mm
- hang the case of MobiLink in the two
metallic woodscrews and push it down
a little to get it fixed
3.10. Installing the OAM program
The installation CD supplied with the equipment includes the OAM
(Operation, Administration, and Maintenance) "MOBILINK.EXE" .
This is a Windows application that runs on Windows 98/2000/XP
operating systems.
By means of the OAM application you may administrate (configure)
up to 20 different Mobilink devices.
The OAM program will connect to one or another of the Mobilink
equipments, allowing you to see or to change the settings for each
one. Each system connected to the OAM program uses a different
directory for its configuration files.
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MobiLink GSM User’s Manual
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The installation procedure for the „Mobilink.exe” O.A.M.
program:
First step is to set the connection on the serial port (COM 1 or
COM2 of your computer) between the MobiLink equipment and a
PC.
To install the program on a desktop PC or a laptop, insert the
installation CD into its drive and copy the structure of folders and
files to your hard disk drive. Then run the file "MOBILINK.EXE"
from the directory on your hard disk.
Using the graphic interface you can set or modify the setting of the
equipment.
For more information about using the OAM program consult the
manual “OAM program operating manual”. The manual contains
some configuring examples. Also the program offers you on-line
help.
Minimal requirements:
- Operating system: Windows 95 or later versions
- Minimum processor 486
- Recommended minimum 500 MB free space on HDD
- Minimum 32 MB of RAM
- One USB port free (available)
- Graphics resolution 1024 by 768 pixels - colors High Color (16bit)
or True Color (32bit)
3.11. Achieving the data connection
Ensure you if the serial cable is really connected between
MobiLink and PC.
The data transmission performing may be allowed if any voice
link is interrupted (in adittion for the „data transmission mode”
switching by MobiLink equipment requires as the loop current
doesn`t dettecting by the line interface)
MobiLink equipment switches automatically on „data
transmission mode„ if the software application, which use the
RS232 port, is running on that PC.
As long as MobiLink functions in „data transmission mode„ it is
not available for voice link (calling sending or receving). Voice link
may be initiate after that the software application has finished.
MobiLink supports data transfer rate of 19.200 b/s.
The features of GSM embedded engine suited for data transfer:
Asynchronuos data circuit, transparent or non –
transparent to 14.400 b/s
Automatically fax, group 3 (1 and 2 range)
V42, V42bis compression
SMS operation (Short Message Service)

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Verifying the data connection
You can check if the data connection is established through
LED`s 1 status watching.
If MobiLink functions in „data transmission mode” LED`s 1 must
light red continuously.
LED`s 1 status is described into the table above:
STATUS DESCRIPTION
Lights up red
continuously
The DTR signal of the serial port of the computer is
active; this means that Mobilink has gone into the "data
transmission" mode
Off The DTR signal of the serial port of the computer is not
active, there is no data transmission.

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4. TECHNICAL SPECIFICATIONS:
Frequency band GSM 900/1800 MHz
Maximum RF output power 2 W
Analog Voice Port RJ 11 Standard connector
External antenna Magnetic base, cable length
1,5 m, dual band
Indicator LEDs Voice, Network, Power
Power supply adapter Output: 10V AC / 1,5A
Mains: 230 V AC / 0,3A / 50Hz
Disc tone 450 Hz ±10%
Line voltage 48 V ±10%
Line current 30 mA max.
Ring signal 25 Hz, min. 60 V effective
Line impedance 600 Ω
Operating temperature range From 5 to 50 oC
Relative humidity 5 to 80%, non-condensing
Dimensions (L x W x H) 222 x 115 x 32 mm
Weight 400 g – MobiLink unit
1 kg – the whole package
4.1. Operating environment:
MobiLink GSM must be installed in closed rooms or enclosures,
where the environment conditions should be inside the limits
specified in the above table.
You should avoid dust and prolonged exposure to Sun radiation.
Also, MobiLink must NOT be used in flammable or explosive
environment, or in locations where toxic or flammable gases may
accumulate.
The equipment must be handled with care, to avoid mechanical
shocks and blows.
MobiLink GSM should not be used in an environment with high level
of EMI (electromagnetic interference), near copiers, PC monitors, TV
sets or other audio-video appliances or high power equipment such
as electric motors or heaters.
When selecting the location for installing MobiLink and its antenna
you must have in mind the recommendations listed in the chapter
about mounting the equipment.

MobiLink GSM User’s Manual
5. APPLICATIONS
In order to demonstrate the applicability and the means of use of
the MobiLink, we show you a few examples of using this equipment
for wireless communications:
Interface between a phone exchange and the GSM
900/1800 MHz mobile telephony network
MobiLink achieves a direct voice connection between the
PBX (private branch telephone exchange) and the GSM
communications network. The equipment is connected on an
analog trunk of the PBX and assures you the benefit of an easy
and fast connection of all the local subscribers to mobile telephony,
by-passing the fixed telephony operator. Using the automatic
routing feature of the PBX (the outgoing calls are automatically
directed by the routing software, depending on the prefix of the
dialed number) any call to a mobile phone will go out through the
trunk on which the MobiLink GSM unit was installed. This way you
will pay only the lower cost of a mobile-to-mobile call inside the
same network instead of a fixed-to-mobile call.
Also, for any call issued from a mobile phone to the number of the
MobiLink unit connected to the PBX you may call any local subscriber
being billed only for a mobile-to-mobile call instead of a more
expensive mobile- to-fixed call.
This application is targeted towards business companies with a lot
of local offices or agents in the field. They have large phone traffic
from fixed phone local subscribers to GSM phones and vice-versa,
and with MobiLink they can to cut down their phone bills.
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MobiLink GSM User’s Manual
Interface between a fixed phone and the GSM 900/1800
MHz mobile telephony network
MobiLink GSM creates a direct voice connection between an
analog fixed (standard) telephone and the GSM wireless
communications network. You just connect phone cable to the
MobiLink unit and have access to the mobile network without the need
for a connection (landline) to a fixed telephony operator.
Also, if you want to call home, you will dial the number of the SIM
inserted into the slot of the MobiLink unit and your call will be
automatically directed to the fixed phone in your home.
This application is targeted for persons or small companies who don't
have access to the fixed telephony network, that is they have no
phone landline to their homes or offices. With MobiLink GSM they will
be able to use the fixed phone to call anywhere through the GSM
telephony network. Benefits of this application include:
¾The immediate installation of a telephone in remote areas, that
may not be reached by phone lines, but which are inside the
coverage area of the GSM mobile network. The antenna with
the magnetic base may be located in a place with good RF
signal, it ensures better field strength that a normal mobile
phone.
¾Even in a big city it may be very expensive and take longer to
install a standard phone line, while using the GSM network is
faster and cheaper, especially for temporary locations.
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¾Diminishing the risk of loss implied by a small size mobile
device. This ensures higher security for equipment connected
to the mobile telephony network when it is installed in remote
public places that require access to a phone. Examples include
gas stations, shops, motels, temporary events like fairs,
exhibitions, competitions etc.
¾The means of easy use of an ordinary, fixed telephone, for
calls to a GSM network. You don’t have to bother with
navigating through complex menus of with dialing using the
small keys of the mobile phone.
¾The possibility to use two fixed phones in derivation or
branching mode.
¾Getting rid of the radiation of the cellphone. The GSM modem
of MobiLink and the external antenna will NOT be located near
the user or other people. Also, they will not be near the Hi-Fi
audio or video appliances sensitive to EMI.
¾Ensure a reliable mobile connection, with high quality of the
audio signal, even when the GSM signal is weak.
If you use a mobile phone, you might need to go outdoors to
reach a place with better RF field strength. But with MobiLink
you can install the external antenna in a place where the field
strength is best, for instance outside of the window, while the
fixed phone remains indoors, on your desk.