FALCOM SAMBA 55 User manual

This document is available at HTTP://WWW.FALCOM.DE/ .
SAMBA 55/56
GSM/GPRS
User’s guide
Version 1.07, 23/01/2007

SAMBA 55/56 VERSION 1.07
Contents
0INTRODUCTION ..............................................................4
0.1 SCOPE OF DELIVERY................................................................................................5
0.2 USED ABBREVIATIONS ............................................................................................6
0.3 RELATED DOCUMENTS ............................................................................................7
1SECURITY .........................................................................8
1.1.1 GENERAL......................................................................................................................................8
1.1.2 EXPOSURE TO RF ENERGY ......................................................................................................8
1.1.3 EFFICIENT MODEM OPERATION.............................................................................................8
1.1.4 ANTENNA CARE AND REPLACEMENT..................................................................................8
1.1.5 DRIVING .......................................................................................................................................9
1.1.6 ELECTRONIC DEVICES..............................................................................................................9
1.1.7 VEHICLE ELECTRONIC EQUIPMENT .....................................................................................9
1.1.8 MEDICAL ELECTRONIC EQUIPMENT ....................................................................................9
1.1.9 AIRCRAFT ....................................................................................................................................9
1.1.10 CHILDREN ....................................................................................................................................9
1.1.11 BLASTING AREAS .................................................................................................................... 10
1.1.12 POTENTIALLY EXPLOSIVE ATMOSPHERES.......................................................................10
1.1.13 NON-IONISING RADIATION ...................................................................................................10
1.2 SAFETY STANDARDS .............................................................................................11
2SAMBA MODEM ............................................................12
2.1 TECHNICAL DATA .................................................................................................12
2.2 GENERAL CHARACTERISTICS.................................................................................12
2.2.1 Power consumption ......................................................................................................................14
2.3 OPERATING TEMPERATURES .................................................................................15
2.4 AIR INTERFACE OF THE SAMBA GSM/GPRS PART.............................................15
2.5 RELIABILITY CHARACTERISTICS............................................................................16
3INTERFACES IN OVERVIEW .....................................17
3.2 FUNCTIONAL DESCRIPTION....................................................................................20
4GSM/GPRS APPLICATION INTERFACE..................21
4.1 DESCRIPTION OF OPERATING MODES .....................................................................21
4.1.1 Normal mode operation ................................................................................................................21
4.1.2 Power down ..................................................................................................................................22
4.1.3 Alarm mode ..................................................................................................................................22
5SYSTEM REQUIREMENTS..........................................23
5.1 HARDWARE & SOFTWARE REQUIREMENTS............................................................23
6GETTING STARTED......................................................24
6.1 INSTALLING YOUR SAMBA IN A LAPTOP COMPUTER RUNNING WINDOWS®
2000 AND XP, ONLY .............................................................................................24
6.1.1 How to use SAMBA phone with a terminal software, only .........................................................26
6.1.2 Communications software ............................................................................................................30
6.1.3 PIN & PUK...................................................................................................................................30
6.1.4 Text messages...............................................................................................................................31
6.1.5 Voice calls ....................................................................................................................................31
6.1.6 Data and fax communication ........................................................................................................31
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Page 1
7APPENDIX .......................................................................32

SAMBA 55/56 VERSION 1.07
7.1 ACCESSORY HEADSET FOR SAMBA .....................................................................32
7.2 RF EXPOSURES .....................................................................................................33
7.3 INSTRUCTIONS TO OEM........................................................................................34
7.4 TROUBLESHOOTING ..............................................................................................35
Version history:
Version number Author Changes
1.00 F. Beqiri Initial version
1.01 F. Beqiri The modem driver and WellPhone “GPRS Controller” software
as a test version added.
1.02 F. Beqiri Added three different housing colours, see below.
LED colour description removed due to the different colour
provided on the different devices.
1.03 F. Beqiri Chapters 2.4 and 2.5 added.
Chapter 3.1.1.1 updated.
Chapter 4added.
Chapter 7.2 updated.
Chapter “Dial-up networking” removed and attached to the new
issued manual “GPRS user guide”
1.04 F. Beqiri Chapter 6updated. The installation guide of both WellPhone
and PhoneTools software is separately issued.
1.05 F. Beqiri Chapter 6.1.6 updated (SAMBA phone could not be used under
Windows 98 and NT).
Figure in chapter 7.1 updated (incoming calls could not be
accepted using the Headset switch button)
1.06 F. Beqiri Chapter 2.2 updated (SAMBA phone does not support MNP 2
data compression)
1.07 F. Beqiri Changing the baud rate of the modem with AT+IPR disables the
USB-Serial link – see added hint in chapter 6.
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SAMBA 55/56 VERSION 1.07
Cautions
Information furnished herein by FALCOM is accurate and reliable.
However, no responsibility is assumed for its use.
Please read carefully the safety precautions.
If you have any technical questions regarding this document or the
product described in it, please contact your vendor.
General information about FALCOM and its range of products are
available at the following Internet address: http://www.falcom.de/
Trademarks
Some mentioned products are registered trademarks of their respective
companies.
Copyright
SAMBA user’s guide is copyrighted by FALCOM WIRELESS
COMMUNICATIONS GmbH with all rights reserved. No part of this
user’s guide may be produced in any form without the prior written
permission of FALCOM WIRELESS COMMUNICATIONS GmbH.
FALCOM WIRELESS COMMUNICATIONS GmbH.
No patent liability is assumed with respect to the use of the information
contained herein.
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SAMBA 55/56 VERSION 1.07
0 Introduction
This manual is focussed on the GSM/GPRS data solutions of the SAMBA
USB modem from FALCOM WIRELESS COMMUNICATIONS GmbH.
The SAMBA is a Plug-and-Play device in extremely small size (88 x 37 x
12 mm), which provides a powerful state-of the art technologies (GSM,
GPRS) and makes them available for a quick and easy way to plug in GSM
and GPRS functionality to systems and modems. The SAMBA provides an
integrated SIM card reader, an internal GSM antenna, an audio channel and
a standard USB interface. The physical interface to the modem application is
made through an embedded USB connector. It consists of 4 pins, required
for controlling the unit, transferring data and audio signals and providing
power supply lines. The embedded USB interface allows it direct connection
to a USB serial port of desktop or notebook computers. The SAMBA is
designed for use on any GSM network in the world, it is a Tri-Band
GSM/GPRS engine that works in the three frequencies GSM 900, DCS 1800
MHz and PCS 1900 MHz or GSM 850, DCS 1800 MHz and PCS 1900
MHz. This full type approved integrated modem constitutes a self contained,
fully integrated implementation of the GSM/GPRS standard. The SAMBA
features GPRS multi-slot class 10 and supports the GPRS coding schemes
CS-1, CS-2, CS-3 and CS-4. The SAMBA equipment supports GPRS Class-
B. This means, that the Mobile Station can set up a GSM call (voice, CSD or
fax) while GPRS attached.
A standard SIM card has to be inserted into the integrated card reader. The
SAMBA modem can send and receive data by GSM and GPRS network. It
supports voice, SMS, fax as well and offers a choice of seven different
ringing tones/melodies, which are easily selectable using AT command. The
SAMBA modem can be easily controlled by using AT command for all
kinds of operations.
About GPRS:
GPRS is a high-speed, data-only service that is an add-on to the GSM
(Global System for Mobile Communications) cellular network - a type of
network used to provide cellular phone service.
The SAMBA Modem provides reliable data connections to GPRS 900
MHz (GSM), 1800 MHz (DCS) networks. When in regions where GPRS
is not available, user can still access their important information with
GSM 14.4 kbps data connections.
Users are advised to quickly proceed to the “Security” chapter and read
the hints carefully.
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SAMBA 55/56 VERSION 1.07
0.1 Scope of delivery
Check the contents of the package. The following listed items should be
included. In case of damaged or missing any item, please contact your dealer
immediately.
Concerning the SAMBA, there are two different SAMBA modems, which
operate, in the different frequencies:
1. The SAMBA 55 Tri-band device which operates in the three
frequencies GSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz, and
is available to use in the European and Asia Networks.
2. The SAMBA 56 Tri-band device which operates in the three
frequencies GSM 850 MHz, DCS 1800 MHz and PCS 1900 MHz, and
is available to use in the American Networks.
Please note that, according to your requirement you can choose the desired
SAMBA device.
SAMBA-55-SET (included) SAMBA-USB-KIT (accessories)
Name Part Quantity
SAMBA 55 1
Headset 1
SAMBA-55-SET
Software and driver CD-ROM 1
SAMBA 56 1
Headset 1
SAMBA-56-SET
Software and driver CD-ROM 1
USB-Docking station with cable
extension
1
SAMBA-USB-KIT*
USB-Tilt connector, around 180°
turnable
1
* This is not part of SAMBA 55/56-SET’s delivery package. Available upon request.
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SAMBA 55/56 VERSION 1.07
Up to three different housing colours of SAMBA are available upon request
(see figures below). However, there is no difference in the hardware and
software specification except their LED colors, which are not the same in all
designed devices.
red colour blue colour orange colour
0.2 Used abbreviations
Abbreviation Description
ETSI European Telecommunications Standards Institute
GSM Global System for Mobile communications
IMEI International Mobile station Equipment Identity
ME Mobile Equipment
GPRS General Packet Radio Service
PLMN Public Land Mobile Network
PIN Personal Identification Number
PUK Personal Unblocking Key
RP Receive Protocol
RXQUAL Received Signal Quality
SIM Subscriber Identity Module
SMS Short Message Service
SMS/PP Short Message Service/Point-to-Point
TA Terminal Adapter
TE Terminal Equipment
TP Transmit Protocol
MS Mobile Station
USB Universal Serial Bus
PTM Point To Multipoint
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SAMBA 55/56 VERSION 1.07
Abbreviation Description
NOM Network Operation Mode
PPP Point to Point Protocol
CSD Circuit Switched Data
URC Unsolicited Result Code
DNS Domain Name Server
DHCP Dynamic Host Configuration Protocol
APN Access Point Naming
IP Internet Protocol
PDP Packet Data Protocol
RF Radio Frequency
ASIC Application Specific Integrated Circuit
RTC Real Time Clock
0.3 Related documents
1. ETSI GSM 07.05: “Use of Data Terminal Equipment - Data Circuit
terminating Equipment interface for Short Message Service and Cell
Broadcast Service“
2. ETSI GSM 07.07: “AT command set for GSM Mobile Equipment”
3. AT-Command SET
4. WellPhone installation guide
5. PhoneTools installation guide
6. GPRS Startup User's Guide
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SAMBA 55/56 VERSION 1.07
1 Security
IMPORTANT FOR THE EFFICIENT AND SAFE OPERATION OF
YOUR GSM MODEM READ THIS INFORMATION BEFORE USE !
Your GSM modem is one of the most exciting and innovative electronic
products ever developed. With it you can stay in contact with your office,
your home, emergency services, and others, wherever service is provided.
1.1.1 GENERAL
Your modem utilises the GSM standard for cellular technology. GSM is a
newer radio frequency (« RF ») technology than the current FM
technology that has been used for radio communications for decades. The
GSM standard has been established for use in the European community
and elsewhere.
Your modem is actually a low power radio transmitter and receiver. It
sends out and receives radio frequency energy. When you use your
modem, the cellular system handling your calls controls both the radio
frequency and the power level of your cellular modem.
1.1.2 EXPOSURE TO RF ENERGY
There has been some public concern about possible health effects of
using GSM modem. Although research on health effects from RF energy
has focused for many years on the current RF technology, scientists have
begun research regarding newer radio technologies, such as GSM. After
existing research had been reviewed, and after compliance to all
applicable safety standards had been tested, it has been concluded that the
product is fit for use.
If you are concerned about exposure to RF energy there are things you
can do to minimise exposure. Obviously, limiting the duration of your
calls will reduce your exposure to RF energy. In addition, you can reduce
RF exposure by operating your cellular modem efficiently by following
the below guidelines.
1.1.3 EFFICIENT MODEM OPERATION
For your modem to operate at the lowest power level, consistent with
satisfactory call quality:
If your modem has an extendible antenna, extend it fully. Some models
allow you to place a call with the antenna retracted. However your
modem operates more efficiently with the antenna fully extended.
Do not hold the antenna when the modem is « IN USE ». Holding the
antenna affects call quality and may cause the modem to operate at a
higher power level than needed.
1.1.4 ANTENNA CARE AND REPLACEMENT
Do not use the modem with a damaged antenna. If a damaged antenna
comes into contact with the skin, a minor burn may result. Replace a
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SAMBA 55/56 VERSION 1.07
damaged antenna immediately. Consult your manual to see if you may
change the antenna yourself. If so, use only a manufacturer-approved
antenna. Otherwise, have your antenna repaired by a qualified technician.
Use only the supplied or approved antenna. Unauthorised antennas,
modifications or attachments could damage the modem and may
contravene local RF emission regulations or invalidate type approval.
1.1.5 DRIVING
Check the laws and regulations on the use of cellular devices in the area
where you drive. Always obey them. Also, when using your modem
while driving, please: give full attention to driving, pull off the road and
park before making or answering a call if driving conditions so require.
When applications are prepared for mobile use they should fulfil road-
safety instructions of the current law!
1.1.6 ELECTRONIC DEVICES
Most electronic equipment, for example in hospitals and motor vehicles
is shielded from RF energy. However RF energy may affect some
malfunctioning or improperly shielded electronic equipment.
1.1.7 VEHICLE ELECTRONIC EQUIPMENT
Check your vehicle manufacturer’s representative to determine if any on
board electronic equipment is adequately shielded from RF energy.
1.1.8 MEDICAL ELECTRONIC EQUIPMENT
Consult the manufacturer of any personal medical devices (such as
pacemakers, hearing aids, etc...) to determine if they are adequately
shielded from external RF energy.
Turn your modem OFF in health care facilities when any regulations
posted in the area instruct you to do so. Hospitals or health care facilities
may be using RF monitoring equipment.
1.1.9 AIRCRAFT
Turn your modem OFF before boarding any aircraft.
Use it on the ground only with crew permission.
Do not use in the air.
To prevent possible interference with aircraft systems, Federal Aviation
Administration (FAA) regulations require you to have permission from a
crew member to use your modem while the plane is on the ground. To
prevent interference with cellular systems, local RF regulations prohibit
using your modem whilst airborne.
1.1.10 CHILDREN
Do not allow children to play with your modem. It is not a toy. Children
could hurt themselves or others (by poking themselves or others in the
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SAMBA 55/56 VERSION 1.07
eye with the antenna, for example). Children could damage the modem,
or make calls that increase your modem bills.
1.1.11 BLASTING AREAS
To avoid interfering with blasting operations, turn your unit OFF when in
a« blasting area » or in areas posted : « turn off two-way radio ».
Construction crew often use remote control RF devices to set off
explosives.
1.1.12 POTENTIALLY EXPLOSIVE ATMOSPHERES
Turn your modem OFF when in any area with a potentially explosive
atmosphere. It is rare, but your modem or its accessories could generate
sparks. Sparks in such areas could cause an explosion or fire resulting in
bodily injury or even death.
Areas with a potentially explosive atmosphere are often, but not always,
clearly marked. They include fuelling areas such as petrol stations; below
decks on boats; fuel or chemical transfer or storage facilities; and areas
where the air contains chemicals or particles, such as grain, dust, or metal
powders.
Do not transport or store flammable gas, liquid, or explosives, in the
compartment of your vehicle, which contains your modem or accessories.
Before using your modem in a vehicle powered by liquefied petroleum
gas (such as propane or butane) ensure that the vehicle complies with the
relevant fire and safety regulations of the country in which the vehicle is
to be used.
1.1.13 NON-IONISING RADIATION
As with other mobile radio transmitting equipment, users are advised that
for satisfactory operation and for the safety of personnel, it is
recommended that no part of the human body be allowed to come too
close to the antenna during operation of the equipment.
The radio equipment shall be connected to the antenna via a non-radiating
50Ohm coaxial cable.
The antenna shall be mounted in such a position that no part of the human
body will normally rest close to any part of the antenna. It is also
recommended to use the equipment not close to medical devices as for
example hearing aids and pacemakers.
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SAMBA 55/56 VERSION 1.07
1.2 Safety standards
THIS CELLULAR MODEM COMPLIES WITH ALL APPLICABLE
RF SAFETY STANDARDS.
This cellular modem meets the standards and recommendations for the
protection of public exposure to RF electromagnetic energy established
by governmental bodies and other qualified organisations, such as the
following:
- Directives of the European Community, Directorate General V in
Matters of Radio Frequency Electromagnetic Energy.
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SAMBA 55/56 VERSION 1.07
2 SAMBA Modem
2.1 Technical Data
2.2 General characteristics
 Power supply:
 Supply voltage +5 VDC (through USB interface)
 Temperature range:
 Normal operation: - 20 °C to + 55 °C (see
chapter 2.3 for further details)
 Physical characteristics:
 Size: 88.7mm x 37.6mm x 12,6mm (L x B x H)
 Weight: approx. 79 g
 Frequency bands:
 Tri-band (SAMBA55): EGSM 900, GSM 1800,
GSM 1900
 Tri-band (SAMBA56): GSM 850, GSM 1800,
GSM 1900
 Compliant to GSM Phase 2/2+
 GSM class:
 Small MS
 Transmit power:
 Class 4 (2 W) at EGSM900 and GSM 850
 Class 1 (1 W) at GSM 1800 and GSM 1900
 GPRS connectivity:
 GPRS multi-slot class 10
 GPRS mobile station class B
 DATA:
GPRS ⇒
 GPRS data downlink transfer: max. 85.6 kbps
(see table 2).
 GPRS data uplink transfer: max. 42.8 kbps (see
table 2).
 Coding scheme: CS-1, CS-2, CS-3 and CS-4.
 SAMBA55/56 supports two protocols PAP
(Password Authentication Protocol) and CHAP
(Challenge Handshake Authentication Protocol)
commonly used for PPP connections.
 Support of Packet Switched Broadcast Control
Channel (PBCCH) allows you to benefit from
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SAMBA 55/56 VERSION 1.07
enhanced GPRS performance when offered by
the network operators.
CSD ⇒
 CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps,
non-transparent, V.110.
 Unstructured Supplementary Services Data
(USSD) support.
WAP ⇒
 WAP compliant.
 SMS:
 MT, MO, CB, Text and PDU mode
 SMS storage: SIM card plus 25 SMS locations in
the mobile equipment
 Transmission of SMS alternatively over CSD or
GPRS. Preferred mode can be user-defined.
 MMS:
 MMS compliant
 FAX:
 Group 3: class 1, class 2
 SIM interface:
 Supported SIM card: 3 V
 Integrated SIM card slot (for small SIM card,
only)
 Casing:
 Fully shield
 Temperature control and auto switch-off:
 Constant temperature control prevents damage to
SAMBA55/56 when the specified temperature is
exceeded. When an emergency call is in progress
the automatic temperature shutdown
functionality is deactivated. (see chapter 2.3 for
further details)
 GSM antenna:
 Internally.
 Audio interfaces:
 An analogue audio interface. 4-pin audio
connector (microphone and speaker)
 Audio features:
Speech code modes:
 Half Rate (ETS 06.20)
 Full Rate (ETS 06.10)
 Enhanced Full Rate (ETS 06.50/06.60/06.80)
 Adaptive Multi Rate (AMR)
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SAMBA 55/56 VERSION 1.07
Handsfree operation:
 Echo cancellation
 Noise reduction
 Serial interface (USB):
 Remote control by AT commands (GSM
07.07 and 07.05)
 Baud rate: 300 bps ... 115,200 bits/s
 Full USB and USB 2 compatibility
 Firmware upgrade: Over USB interface and SIM
interface
 Phonebook management:
 Supported phonebook types: SM, FD, LD, MC,
RC, ON, ME
 Ringing tones:
 Offers a choice of 7 different ringing
tones/melodies, easily selectable with AT
command
 Real time clock:
 Implemented
 Timer function:
 Programmable via AT command
2.2.1 Power consumption
Average current (in mA at 5 V ± 5%):
900 1800 MHz GSM band
57 57 mA in idle mode (base station sends at -85 dBm)
195 143 mA in transmit mode at power level 7/3
GSM
232 166 mA in transmit mode at power level 5/0 (maximum)
GPRS 423 mA
in receive/transmit mode at maximum power
level 5 (3 x downstream +2 x upstream using
Coding Scheme: CS-4)
Table 1: The average power consumption at 5V ± 5%
Coding scheme 1 Timeslot 2 Timeslots 4 Timeslots
CS-1: 9.05 kbps 18.1 kbps 36.2 kbps
CS-2: 13.4 kbps 26.8 kbps 53.6 kbps
CS-3: 15.6 kbps 31.2 kbps 62.4 kbps
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SAMBA 55/56 VERSION 1.07
CS-4: 21.4 kbps 42.8 kbps 85.6 kbps
Table 2: Coding schemes and maximum net data rates over air interface
Please note that the values listed above are the maximum ratings which, in
practice, are influenced by a great variety of factors, primarily, for example,
traffic variations and network coverage.
2.3 Operating temperatures
Parameter Min Typ. Max Unit
Ambient temperature (according to GSM
11.10)
-20 25 50 °C
Restricted operation *) -25 to -20 55 to 70 °C
Automatic shutdown: board temperature -29 °C >70 °C °C
*) SAMBA55/56 work, but deviations from the GSM specification may occur.
2.4 Air interface of the SAMBA GSM/GPRS part
Test conditions:
All measurements have been performed at Tamb= 25 °C, VInput power = 5 V.
The reference points used on SAMBA are internal contacts.
Parameter Min Typ Max Unit
E-GSM 900 880 915 MHz
GSM 900 1710 1785 MHz
GSM 1800 1850 1910 MHz
E-GSM 1900 925 960 MHz
GSM 1800 1805 1880 MHz
Frequency range
Uplink (MS →BTS)
Frequency range
Downlink (BTS →
MS) GSM 1900 1930 1990 MHz
E-GSM 900 31 33 35 dBm
GSM 1800 28 30 32 dBm
GSM 1900 28 30 32 dBm
E-GSM 900 174
GSM 1800 374
RF power @ ARP with
50 Ωload
GSM 1900 299 dBm
E-GSM 900 45 MHz
GSM 1800 95 MHz
Duplex spacing
GSM 1900 80 MHz
Carrier spacing 200 kHz
Multiplex, Duplex TDMA/FTDMA, FDD
Time slots per TDMA frame 8
Frame duration 4.615 ms
Time slot duration 577 µs
GMSK
E-GSM 900 -102 -107 dBm
GSM 1800 -102 -106 dBm
Modulation
Receiver input
sensitivity @ ARP
BER Class II < 2.4 % GSM 1900 -102 -106 dBm
Table 3: Air Interface
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SAMBA 55/56 VERSION 1.07
2.5 Reliability characteristics
The test conditions stated below are an extract of the complete test
specifications.
Type of test Conditions Standard
Vibration Frequency range: 10-20 Hz; acceleration:
3.1 mm amplitude
Frequency range: 20-500 Hz;
acceleration: 5 g
Duration: 2h per axis = 10 cycles; 3 axes
DIN IEC 68-2-6
Shock half-sinus Acceleration: 500 g
Shock duration: 1 msec
1 shock per axis
6 positions (± x, y and z)
DIN IEC 68-2-27
Dry heat Temperature: +70 ±2 °C
Test duration: 16 h
Humidity in the test chamber: < 50 %
EN 60068-2-2 Bb
ETS 300019-2-7
Temperature
change (shock)
Low temperature: -40 °C ±2 °C
High temperature: +85 °C ±2 °C
Changeover time: < 30 s (dual chamber
system)
Test duration: 1 h
Number of repetitions: 100
DIN IEC 68-2-14
Na
ETS 300019-2-7
Damp heat cyclic High temperature: +55 °C ±2 °C
Low temperature: +25 °C ±2 °C
Humidity: 93 % ±3 %
Number of repetitions: 6
Test duration: 12 h + 12 h
DIN IEC 68-2-30
Db
ETS 300019-2-5
Cold (constant
exposure)
Temperature: -40 ±2°C
Test duration: 16 h
DIN IEC 68-2-1
Table 4: Summary of reliability test conditions
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SAMBA 55/56 VERSION 1.07
3 Interfaces in overview
The integrated modem has a sole USB connector, which gathers all the
interface signals in order to facilitate its integration.
It has an integrated SIM card reader as well as a internal GSM antenna.
The concept of the integrated modem has been defined to integrate on a sole
device with follow interfaces:
Interface specifications
Interface A Standard USB plug serial interface
Interface B Audio interface 2,5 mm (4-pin) connector (for included
headset)
Interface C SIM card reader for small SIM cards (3V)
Interface D 3 optical indicators LED’s
Table 5: Interface specifications of the Modem
Figure 2: view of SAMBA interfaces.
3.1.1.1 Interface A (4-pin USB Type A connector)
The power supply for the GSM/GPRS part of the SAMBA modem has to be
a single voltage source of +5 V. It must be able to provide sufficient current
in a transmit burst which typically rises according to the USB 1.1 and 2.0
statements.
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SAMBA 55/56 VERSION 1.07
Figure 3: Mini-USB pin-out (interface A)
Pin Description
1 + 5V
2 - DATA
3 + DATA
4 GND
Table 6: Pin assignment of the standard USB connector
3.1.1.2 Interface B (4-pin audio connector)
The SAMBA modem provides this interface for a headset connection.
For more details about headset see chapter 7.1 “Accessory”.
Figure 4: Audio interface pin-out (interface B)
3.1.1.3 Interface C (SIM-Card interface)
The SIM interface controls a 3V SIM card. This interface is fully
compliant with GSM 11.11 recommendations concerning SIM functions.
Figure 6: SIM Card interface
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SAMBA 55/56 VERSION 1.07
3.1.1.4 Interface D (Optical interface)
The actual state of the SAMBA is displayed by three LED’s (their
functionality is described in the next chapter) on this interface, see figure
below.
Figure 7: Status indicator of modem
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