INDUBOXGPRSTG RnD OVERVIEW febr. 2004
Research & Development overview of
Bausch Datacom NV
Communication Products for the Industrial market
Bausch Datacom NV
e-mail
telephone
mobile
Filip Lavaerts
filip@bausch.be
+32 16 46.12.88
+32 475 48.63.91
Presentation Overview
Chronological engineering milestones
Standard Rockwell technology AND Additional Bausch implementation
Proxima modem technology
Modular DinLine concept
GSM modem for the ‘Industrial’ market --> GSMDM-2
InduBox professional housing
InduBox GSM design
InduBox Socket design
InduBox GPRS design
InduBox GPRS enhanced features + sample configurations
GPRS background
Power Supply requirements
Overview
1987
1988
1989
1992
Bausch Datacom (NL) enters the European market.
Introduction of an electronic home banking packet for the Postbank (NL).
Opening of the Belgian and German sales offices.
Introduction of a new Windows based “terminal emulation” communication packet ComPlus.
1993
Start of the Belgian R&D department.
Development of the MOD144 table top modem, the first ‘payable’ async/synch V.32 external modem
for PSTN and leased lines.
Start of development of the build-in Delta modem line.
Development of the first V.34 PCMCIA card with internal line interface.
Start of the Proxima modem technology with easy to use features ; leased line, dial back, autosync,
remote control, async DTR-dialling, Dump Mode, …
First V.Fast modem on the Belgian market.
Introduction of the Proxima V.34 modem line in a table top modem, internal ISA PC-card and
in a 19” rack card.
Proxima modems with K56Flex modulation, flash upgreadable to V.90.
All new modems designs meets the European CTR21 approvals.
Start of the modular DinLine modem concept for the industrial market. One of the first modems with
embedded TCP/IP capable of sending an e-mail after an input pin change.
Upgreade of the Delta modem with V.90 and ASVD, DSVD options.
Introduction of ‘GSM data’ modules into the DinLine concept. This modem is based on the
Wavecom technology.
Creation of small build-in modems based on the Socket and I-modem format for te European market.
Development of the GSMDM-2 GSM modem for the metering market. This modem is based on the
Conexant GSM technology and has a 20 mA current loop interface.
Development of a new modem housing for the industrial market.
The InduBox GSM will be the first design into this housing. This GSM modem has the same
modem specifications as the GSMDM-2 modem but the current loop interface is available as an option.
Development of the InduBox Socket and the InduBox GPRS products with different power
supply options and an optional RISC processor to implement I/O handling.
1994
1995
1997
1999
2000
2001
2002
2003
Modem R&D Mile Stones
Basic Rockwell / Conexant modem technology
- modem
V.21 … V.90/V.92
- FAX
Class 1 / 1.0 / 2
- voice
SpeakerPhone / ASVD / DSVD
- asynchronous / synchronous communication
- autosync
good for standard applications with intelligent terminals ...
Additional Bausch implementations
- automatic dialling after a DTR activation
- dialback with or without password verification
- remote configuration
- leased line support
- dump mode support (no aborts during dialling)
thanks to those features the modem can be used with non-intelligent terminals …
Proxima Technology
We had one big disadvantage with the existing Proxima technology : the hardware was fixed !
* power supply : 9 Vac
* serial Interface : RS-232
* WAN module : PSTN and/or leased line modem
The DinLine concept was the answer to this disadvantage ...
Modular DinLine concept
PWR GSM TxD RxD CTS DTR DCD RI
10 I/O
RS-232
20 mA CL
DTE
Interface
85 – 264 Vac
10 - 32 Vac/dc
Modular DinLine concept
Power
Supply
µP
WAN
Module
PSTN
ISDN
GSM
DTE-CL
1 2 3 4
AUX
1 2 3 4
I/O
0 1 2 3 4 5 6 7 8 9
INTERFACE + POWER SUPPLY board
PROCESSOR board
PSTN / ISDN / GSM board
PS- low PS- high
DTE
RS-232
Modular DinLine concept
2 1
- +
3 2 1
N L1
Line
4 3 2 1
A B
The DinLine concept was developed for PSTN and ISDN connectivity …
not for GSM communication modules …
Power Supply problems
SIM card reader
antenna connector
CE issues (safety)
--> new design GSMDM-2
GSMDM-2 GSM modem
Current Loop option
on PCB
PWR GSM TxD RxD CTS DTR DCD RI
Fixed GSM module
RS-232
20 mA
85 – 264 Vac
DTE
Interface
Power
Supply
Watch
DOG
Introduction of the ‘long term watchdog’
GSMDM-2 GSM modem
WAN
Module
GSM
X X
JP6
X X
JP5
X X
JP2
X X
JP1
X
PWR
GSM
TxD
RxD
CTS
DTR
DCD
RI
J2
J4
X
L1 N
GSMDM-2 GSM modem
J1
J5
RxD GND TxD GND RS-232
Rx+ Rx- Tx+ Tx- 4-W CL
CL+
CL2-W CL
InduBox
The InduBox GSM has the same GSM modem module, interface and power supply
specifications as the GSMDM-2 modem.
The InduBox GSM is housed in the new InduBox housing.
InduBox GSM
Current Loop or RS485
via option board
PWR GSM TxD RxD CTS DTR DCD RI
Fixed GSM module
RS-232
85 – 264 Vac
DTE
Interface
Power
Supply
Watch
DOG
InduBox GSM
WAN
Module
GSM
J7 J8
MAINS 85-265V
50/60 Hz
WD
PWR
GSM
TxD
RxD
CTS
DTR
DCD
RI
InduBox GSM
L1 N
J6 J5
J4 J3 J2 J1
X X
X X X X
X X X X
CONFIGURATION
INTERFACE
RS-232
COMMUNICATION
INTERFACE
RxD GND TxD GND
Rx+ Rx- Tx+ TxCL+
CL-
ANT
The InduBox Socket is designed with -almost- the same modular concept as the DinLine
modem line but we used the new InduBox housing.
InduBox Socket
PWR GSM TxD RxD CTS DTR DCD RI
Current Loop or RS485
via option board
RS-232
4 I/O
Modular Socket or I-modem module
DTE
Interface
µP
WAN
Module
85 – 264 Vac
Power
Supply
Additional option board
InduBox Socket
PSTN
ISDN
GSM
J10 J9
PSTN or
ISDN
COMMUNICATION
INTERFACE
CONFIGURATION
INTERFACE
RS-232
MAINS 85-265V
50/60 Hz
L1 N
I/O 0
1
3
4
RxD GND TxD GND
J6 J5 J4 J3
J7 J8
InduBox Socket
The InduBox GPRS is the most recent development in the InduBox modem line.
This product has some state-of-the-art features :
* Wavecom GSM/GPRS module
* embedded TCP/IP
* RS-232 interface
* optional Current loop and/or RS-485
* additional RISC processor to serve 4 I/O lines
InduBox GPRS
* wide range power supply
* ‘long term’ watchdog
* 7-segment display
* SuperCap (50 F) power backup
* ...
PWR GSM TxD RxD CTS DTR DCD RI
4 I/O
GSM
RS-232
20 mA
DTE
Interface
µP
85 – 264 Vac
Power
Supply
C
Watch
DOG
InduBox GPRS
WatchDog “tick” LED
GSM
GPRS
Module
ANT
COMMUNICATION
INTERFACE
CONFIGURATION
INTERFACE
RS-232
MAINS 85-265V
50/60 Hz
L1 N
I/O 0
1
3
4
RxD GND TxD GND
InduBox GPRS
The InduBox Socket and GPRS modem hardware options :
* 20 mA current loop
2 or 4 wire
9.600 bps
* RS-485
2 wire
300 - 115.200 bps
* wide range AC power supply
90 - 264 Vac
* DC power supply
10 - 72 Vdc
* additional RISC processor
to serve I/O
ADC
comparator
---> firmware is custom made for a specific application
Possible InduBox hardware options
InduBox GPRS enhanced features
GSM DATA connection
Standard GPRS connection with a PC
Standard GPRS connection with a non PPP - TCP/IP terminal
Embedded TCP/IP
Embedded TCP/IP and additional RISC processor to serve I/O
InduBox GPRS configuration samples
InduBox GPRS enhanced features
GSM DATA connection
DATA features :
* asynchronous
* transparent and non-transparent up to 14.400 bps
* AT commands
* S-registers
* responses
FAX features :
* Automatic FAX group 3
* Class 1 and Class 2 commands
--> acts like a standard PSTN modem
InduBox GPRS enhanced features
GSM DATA connection
--> acts like a standard asynchronous PSTN / ISDN modem
--> CIRCUIT SWITCHED connection
MODEM -- V.32
PSTN
ISDN
ISDN -- V.110
GSM
InduBox
GPRS
InduBox
GPRS
InduBox GPRS enhanced features
GSM DATA connection
Application
Application
InduBox GSM
AT/V.24
AT/V.24
InduBox GSM
GSM
GSM
AT/V.24
GSM
ORIGINATION MODEM
ANSWERING MODEM
<init string>
OK
atdt016123456
<init string>
OK
RING
CONNECT 9600
CONNECT 9600
transparant data
NO CARRIER
InduBox GPRS enhanced features
<DTR drop>
NO CARRIER
AT/V.24
Standard GPRS connection
--> PACKET SWITCHED connection
INTERNET
INTRANET
GSM
GPRS
InduBox
GPRS
ATDT*99***1#
start of PPP session
TCP/IP
InduBox GPRS enhanced features
IP ROUTER
Standard GPRS connection with a PC
Application
Application
TCP/UDP
TCP/UDP
IP
InduBox GPRS
IP
INTERNET
AT/V.24
AT/V.24
PC with Windows OS
application : DialUp networking
application : Web Browser
InduBox GPRS enhanced features
GPRS
LINK LAYER
GSM
GPRS
Web Server
Connected to the Internet via a
leased line with a pubic and fixed
IP address.
Standard GPRS connection with a non PPP - TCP/IP terminal
Application
Application
TCP/UDP
TCP/UDP
IP
IP
InduBox GPRS
INTERNET
AT/V.24
AT/V.24
System with a standard serial
configuration/setup interface
InduBox GPRS enhanced features
GPRS
LINK LAYER
GSM
GPRS
E-Mail Server
Connected to the Internet via a
leased line with a pubic and fixed
IP address.
Embedded TCP/IP
Application
InduBox GPRS
TCP/UDP
TCP/UDP
IP
Application
IP
INTERNET
AT/V.24
AT/V.24
GPRS
System with a standard serial
configuration/setup interface
AT# commands
InduBox GPRS enhanced features
LINK LAYER
GSM
GPRS
E-Mail Server
Connected to the Internet via a
leased line with a pubic and fixed
IP address.
Embedded TCP/IP : Services
Integration of TCP/IP stack in the Wavecom module
Open AT
Application software
e-mail
file transfer
socket
Autonomous software
AT like commands
send through the serial port
fully compatible with serial non-IP applications
TCP-IP
RFC compliant
TCP socket access for specific application
DNS client
InduBox GPRS enhanced features
Embedded TCP/IP : Supported Protocols
Sockets
TCP port x
> defines by an IP address and a port number
FTP
> File Transfer Protocol
> data transfer between systems
TCP port 20, 21
Telnet
> Terminal emulation
TCP port 23
POP3
> Post Office Protocol V3
TCP port 110
> allows clients to read and remove email from a mailbox
SMTP
> Simple Mail Transfer Protocol
> used to deliver email to a mailbox
DNS
> Domain Name Solving
UDP port 53
> dynamic on-demand translation between
readable names and the numeric IP addresses
InduBox GPRS enhanced features
TCP port 25
Embedded TCP/IP and additional RISC processor to serve I/O
Input / Output
Application
InduBox GPRS
TCP/UDP
TCP/UDP
Application
IP
Application
IP
INTERNET
AT/V.24
System without a standard serial
configuration/setup interface
InduBox GPRS enhanced features
GPRS
LINK LAYER
GSM
GPRS
E-Mail Server
Connected to the Internet via a
leased line with a pubic and fixed
IP address.
Embedded TCP/IP and additional RISC processor to serve I/O
PWR GSM TxD RxD CTS DTR DCD RI
4 I/O
GSM
RS-232
20 mA
DTE
Interface
µP
85 – 264 Vac
Power
Supply
C
Watch
DOG
InduBox GPRS enhanced features
WatchDog “tick” LED
GSM
GPRS
Module
Embedded TCP/IP and additional RISC processor to serve I/O
Hardware
Atmel ATMega8L RISC processor
Integration of specific applications
customer based
8 K flash
Application
I/O events (TTL)
serial events
Autonomous software
fully compatible with non-serial and non-IP applications
InduBox GPRS enhanced features
InduBox GPRS configuration samples
It’s all about M2M !!!!
What is M2M?
Simply, M2M provides communications between people, devices, and systems and turns data
into information companies can act upon.
Whether you call it machine-to-machine, man-to-machine, mobile-to-machine, machine-tomobile, it’s all the same.
What’s more, beginning in the mid-1990s the M2M market had also been known as pervasive
Internet, telemetry, telematics, device-relationship management, and remote monitoring, among
other things.
However, no matter what it is called, in the end, M2M provides communication between people,
devices, and systems and that is exactly what M2M is all about.
InduBox GPRS enhanced features
InduBox GPRS -enhanced- configuration samples
Customer specific applications !!!!
Three standard application possible :
- SMS
- Socket
- GPRS Leased Line
InduBox GPRS enhanced features
SMS configuration (I/O) sample
Alarm !
Node 120a
Input 8
GSM
InduBox
GPRS
4 Input
Application
InduBox GPRS enhanced features
Socket configuration (I/O) sample
INTERNET
IP ROUTER
GSM
GPRS
InduBox
GPRS
SERIAL
ISSUES
* Fixed / Dynamic IP addresses
4 Input
Application
InduBox GPRS enhanced features
* Public / Private IP addresses
* Port Mapping trough firewall / NAT devices
Socket server
application
GPRS Leased Line configuration (serial) sample
INTERNET
GSM
GPRS
InduBox
GPRS
InduBox
GPRS
Application
Application
ISSUES
* Fixed / Dynamic IP addresses
* Public / Private IP addresses
* GPRS idle times / keep alive !!!!!
InduBox GPRS enhanced features
Other standard features
Voice Features (not InduBox GPRS)
* Telephony and Emergency calls
* Full Rate, Enhanced Full Rate, Half Rate (FR/EFR/HR)
* Echo Cancellation and Noice Reduction
* Full Duplex handfree
Message services SMS
* Point to point and Cell Broadcast
* EMS
GSM Supplementary Services
*
*
*
*
Call forwarding, Call Barring
Multiparty
Call Waiting, Call Hold
USSD
InduBox GPRS enhanced features
GPRS Background
What is GPRS
Mobile Station Classes
GPRS bandwidth or data throughput
GPRS Multislot Classes
GPRS background
What is GPRS
The General Packet Radio Service (GPRS) is a new non-voice value added service that allows information to be sent
and received across a mobile telephone network. It supplements today's Circuit Switched Data and Short Message
Service. GPRS has several unique features which can be summarized as:
SPEED
* Theoretical maximum speeds of up to 171.2 kilobits per second (kbps), using all eight timeslots at the same time.
* Three times as fast as the data transmission speeds = ten times as fast as current Circuit Switched Data.
* GPRS may well be a relatively less costly mobile data service compared to SMS and Circuit Switched Data.
IMMEDIACY
instant connections whereby information can be sent or received immediately as the need arises
GPRS users are sometimes referred to be as being "always connected"
High immediacy is a very important feature for time critical applications such as remote credit card authorisation where it
would be unacceptable to keep the customer waiting for even thirty extra seconds.
NEW APPLICATIONS, BETTER APPLICATIONS
GPRS will fully enable the Internet applications you are used to on your desktop from web browsing to chat over the
mobile network.
Other new applications for GPRS include file transfer and home automation- the ability to remotely access and control inhouse appliances and machines.
GPRS background
Mobile Station Classes
The class indicates the mobile phone capabilities.
Class A
Class A mobile phones can be connected to both GPRS and GSM services simultaneously.
Class B
Class B mobile phones can be attached to both GPRS and GSM services, using one service at a time. Class B enables
making or receiving a voice call, or sending/receiving an SMS during a GPRS connection. During voice calls or SMS,
GPRS services are suspended and then resumed automatically after the call or SMS session has ended.
Class C
Class C mobile phones are attached to either GPRS or GSM voice service. You need to switch manually between
services.
InduBox GPRS
based on Wavecom Wismo Q2406
AT+CGCLASS=?
B - Class B
CG - Class C in GPRS mode only
CC - Class C in GSM data mode only
Class A is NOT possible
GPRS background
GPRS bandwidth
The class of the device determines the speed at which GPRS can be used.
For example, the majority of GPRS terminals will be able to download data at speeds of up to 24Kbps (kilobytes per
second). At the higher end, speeds are theoretically possible up to 171.2 kbit/sec when 8 slots are assigned at the same
time to a single user. In reality 40-50Kbps.
Compare this to current data speeds available :
GPRS background
UPLINK
DOWNLINK
GPRS
14 kbps
28-64 kbps
GSM CSD
9.6-14 kbps
9.6-14 kbps
HSCSD
28 kbps
28 kbps
Dial-UP
56 kbps
56 kbps
ISDN 1B
64 kbps
64 kbps
ADSL
256 kbps
512 kbps
Broadband
2 Mbps
2 Mbps
GPRS Multislot Classes
Multislot classes are product dependant, and determine the maximum achievable data rates in both the uplink and
downlink directions.
Written as (for example) 3+1 or 2+2
first number indicates the amount of downlink timeslots (what the mobile phone is able to receive from the network)
second number indicates the amount of uplink timeslots (how many timeslots the mobile phone is able to transmit)
The active slots determine the total number of slots the GPRS device can use simultaneously for both uplink and
downlink communications.
Multislot Class
Downlink
Uplink
Active
1
2
3
4
5
6
7
8
9
10
11
12
1
2
2
3
2
3
3
4
3
4
4
4
1
1
2
1
2
2
3
1
2
2
3
4
2
3
3
4
4
4
4
5
5
5
5
5
GPRS background
InduBox GPRS
based on Wavecom Wismo Q2406
GPRS CLASS10
1 up
8 - 24 Kbps
4 down
32 - 48 Kbps
2 up
16 - 24 Kbps
3 down
24 - 36 Kbps
Coding Scheme
Up to 4 different channel coding schemes are defined in the GPRS specifications.
different level of data integrity checks (error correction overhead)
labelled from CS1 to CS4
variation of size of the radio block
--> there is a inverse relation between the amount of data and the data integrity assurance
--> coding scheme with the least protection will have the highest throughput
The trade-off of throughput versus error protection is an important capacity parameter that depends on the users location,
in relation to the basestation picking up the strongest signal from the user (usually the nearest basestation).
It is the basestation that calculates witch channel coding scheme that should be used.
It is important to know that CS4 incorporates NO error correction.
GPRS background
Coding
Scheme
Data rate per
time slot Kb/s
CS1
CS2
CS3
CS4
9.05
13.4
15.6
21.4
InduBox GPRS
based on Wavecom Wismo Q2406
CS1 to CS4 are supported
www.gsmworld.com
www.wavecom.com
www.ericsson.com
Blank Page
GSM Modem Power Consumption
The power supply is one of the key issues in the design of a GSM modem.
Due to the bursted emission in GSM/GPRS the power supply must be able to deliver
high peaks in a short time.
GSM DATA & GPRS Class 2 mode
1.8A
300mA
@Pout = 2W
1/8 P>
577 µs
4.615 µs
GPRS Class 10
1.8A
2/8 P>
510mA
@Pout = 2W
Power Supply
1.154 µs
4.615 µs
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