Sierra Wireless Q2426 GSM 850/1900 MHz Modem User Manual Redwing GPRS User Guide

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Document ID	468965
Application ID	0/PFSwV/G9ooqU+TeoUoKA==
Document Description	Redwing
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Filesize	35.08kB (438512 bits)
Date Submitted	2004-09-15 00:00:00
Date Available	2004-09-15 00:00:00
Creation Date	2004-09-14 09:54:37
Producing Software	Acrobat Distiller 6.0.1 (Windows)
Document Lastmod	2004-09-14 09:55:41
Document Title	Redwing GPRS User Guide
Document Creator	Acrobat PDFMaker 6.0 for Word
Document Author:	Jim Baichtal, Edward Baichtal

Redwing GPRS
User Guide
Models G3110, G3111
Version 2.01
AirLink Communications, Inc.
September 14, 2004
Information in this document is subject to change without notice
© Copyright AirLink Communications, Inc, 1993-2004. All rights reserved.
Please send comments to:
email:
pubs@AirLink.com
Fax:
Phone:
510-264-5422
510-264-5400
Post:
AirLink Communications, Inc.
Attention: Technical Publications Dept.
3159 Corporate Place
Hayward, CA 94545
Important Notice
Because of the nature of wireless communications, transmission and reception of
data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or
be totally lost. Although significant delays or losses of data are rare when wireless
devices such as the AirLink Communications modem are used in a normal manner
with a well-constructed network, the AirLink modem should not be used in situations
where failure to transmit or receive data could result in damage of any kind to the
user or any other party, including but not limited to personal injury, death, or loss of
property. AirLink Communications, Inc., accepts no responsibility for damages of any
kind resulting from delays or errors in data transmitted or received using the
AirLink Communications modem, or for failure of the AirLink Communications
modem to transmit or receive such data.
Safety and Hazards
Do not operate the AirLink Communications modem in areas where blasting is in
progress, where explosive atmospheres may be present, near medical equipment,
near life support equipment, or any equipment which may be susceptible to any form
of radio interference. In such areas, the AirLink Communications modem MUST BE
POWERED OFF. The AirLink Communications modem can transmit signals that
could interfere with this equipment. Do not operate the AirLink Communications
modem in any aircraft, whether the aircraft is on the ground or in flight. In aircraft,
the AirLink Communications modem MUST BE POWERED OFF. When operating,
the AirLink Communications modem can transmit signals that could interfere with
various onboard systems. The driver or operator of any vehicle should not operate the
AirLink Communications modem while in control of a vehicle. Doing so will detract
from the driver or operator's control and operation of that vehicle. In some states and
provinces, operating such communications devices while in control of a vehicle is an
offence.
Limitation of Liability
The information in this manual is subject to change without notice and does not
represent a commitment on the part of AirLink Communications, Inc. AIRLINK
COMMUNICATIONS, INC. SPECIFICALLY DISCLAIMS LIABILITY FOR ANY
AND ALL DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL,
CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT
NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED
PROFITS OR REVENUE ARISING OUT OF THE USE OR INABILITY TO USE
ANY AIRLINK COMMUNICATIONS, INC. PRODUCT, EVEN IF AIRLINK
COMMUNICATIONS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY
THIRD PARTY.
Redwing GPRS User Guide
Table of Contents
1.
Introduction ..................................................................................... 1
1.1
2.
Redwing Product Overview ........................................................................... 2
Redwing Network Connection ..................................................... 3
2.1
3.
Internet (TCP/IP) Connections via GPRS .................................................... 3
Redwing GPRS Configuration ..................................................... 4
3.1
Configuration Procedure ............................................................................... 4
3.2
Modem Activation [C3110] ............................................................................ 6
3.3
Modem Activation [C3111] ............................................................................ 7
4.
3.3.1
SIM Check
3.3.2
PDP Context
Using AT Commands ...................................................................... 9
4.1
Redwing GPRS Specific AT Commands ..................................................... 10
4.2
Redwing AT Command Summary .............................................................. 13
4.3
Redwing SMS Command Summary ........................................................... 15
4.4
Redwing GPRS Commands ......................................................................... 16
4.5
RIM [C3110] Specific AT Commands ......................................................... 16
5.
Redwing GPRS Technical Specifications ................................ 17
5.1
Physical Characteristics .............................................................................. 17
5.2
Power Specifications .................................................................................... 17
5.3
Environmental ............................................................................................. 17
5.4
RF Features ................................................................................................. 18
5.5
Status LED Display ..................................................................................... 18
5.6
Application Interface Features ................................................................... 18
Redwing GPRS
User Guide
WARNING
The antenna(s) used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be colocated or operating in conjunction with any other antenna or transmitter.
1. Introduction
The GSM/GPRS wireless network combines the world’s leading wireless standard—
the Global System for Mobile Communications (GSM)—with fast, packet-switched
access to data networks such as the Internet. Providing this fast access is the
General Packet Radio Service (GPRS).
The AirLink GPRS modems are designed to operate in GSM/GPRS networks. Two
data services are available in the GSM/GPRS networks: GPRS, a packet switched
connection, and SMS, a short message service..
GPRS
GPRS is an IP-based service that offers fast, packet-switched access to data networks
such as the Internet. It is a mobile service that improves the peak-time capacity of a
GSM network. GPRS gives packet-switched access over GSM to external data
networks with high peak transfer capacity. The main objective of GPRS is to offer
access to standard data networks such as TCP/IP. GPRS is a non-voice service
designed specifically for transmitting data. It breaks data messages into separate
packets for transmission from the mobile device and sends them to destinations in an
external network.
Most any Internet-based application or service will run on GPRS. GPRS offers peak
throughputs of 40 Kbps (53.6 Kbps raw) Because GPRS capacity is shared among
active users in the same coverage area, actual throughputs may vary.
GPRS
Network
Internet
Redwing Product Overview
Redwing GPRS User Guide Version 2.01
1.1 Redwing Product Overview
The AirLink Redwing GPRS is a rugged, full duplex GPRS modem that provides
wireless transport capabilities for fixed and mobile applications. GPRS is an efficient
and secure wireless technology that works well for fixed or mobile applications.
The Redwing's rugged form factor is ideal for industrial and commercial applications
that require real-time communications. The Redwing provides wireless data
communications for a variety of applications, such as telemetry, public safety,
SCADA, traffic control, traffic metering, transit arrival systems and more.
Front of Redwing
Back of Redwing
AirLink Communications, Inc.
Page 2
September 14, 2004
Redwing Network Connection
Redwing GPRS User Guide Version 2.01
2. Redwing Network Connection
The AirLink Redwing GPRS modems are capable of providing network connections
for GPRS and SMS data.
2.1 Internet (TCP/IP) Connections via GPRS
When using the Redwing GPRS, remote access to is done via a PPP (TCP/IP)
connection to the GPRS network. The GPRS carrier actually provides Internet
connectivity, and, therefore, it becomes the ISP for that session. Applications such as
web browsing, email, FTP, etc should work as they would normally.
GPRS
Network
Internet
Corporate
LAN
GPRS
Network
Data
Acquisition
App
AirLink Communications, Inc.
Page 3
Internet
Corporate
LAN
September 14, 2004
Redwing GPRS Configuration
Redwing GPRS User Guide Version 2.01
3. Redwing GPRS Configuration
Configuration of the Redwing GPRS modem is done using a terminal emulation
program like HyperTerminal in Windows.
3.1 Configuration Procedure
1. Attach the antennas, DB-9 cable and power to the back of the modem.
2. Power on the modem, and ensure the Pwr light is lit.
3. Attach the modem to the back of the PC with the provided DB-9 cable.
(Note, if you did not order a cable with your modem, you need a straight-thru
RS-232 cable to attach to the modem.)
4. Select Start→ Programs→ Accessories→ Communications→
HyperTerminal.
5. Enter the name of the connection and select OK.
AirLink Communications, Inc.
Page 4
September 14, 2004
Redwing GPRS Configuration
Redwing GPRS User Guide Version 2.01
6. For "Connect using" select the COM port that the modem is on (do not select
a modem driver), then select OK.
7. Select 115200 for the "Bits per second." Ensure Data Bits: 8, Parity: None,
Stop bits: 1 and Flow control: Hardware. Then select OK.
(These are the factory default settings for a GPRS modem. If you get garbled
characters when typing AT commands, change these settings and reconnect
to the modem. For example, change the baud rate to 57,600 bits per second
and connect again, etc.)
AirLink Communications, Inc.
Page 5
September 14, 2004
Redwing GPRS Configuration
Redwing GPRS User Guide Version 2.01
8. Type AT followed by [Enter]. You should receive an "OK" in response.
Other AT commands may now be issued to the modem. See Section Using AT
Commands for a list of AT commands
3.2 Modem Activation [C3110]
The Redwing GPRS modem requires a SIM [Subscriber Identity Module] for the
modem’s account activation. Units will usually be shipped with a SIM installed and
be ready to operate. If a SIM is installed, and the modem is in GSM/GPRS coverage,
the status indicators will look like the following:
where the status indicators have the following meanings:
GSM
indicates GSM coverage if +RSCI=0
indicates GPRS coverage if +RSCI=1
Tx
indicates the radio is transmitting
Radio The OEM module radio is on and ready to transmit and receive
Pwr
The power is on.
AirLink Communications, Inc.
Page 6
September 14, 2004
Redwing GPRS Configuration
Redwing GPRS User Guide Version 2.01
If there is no SIM installed or there is no GSM/GPRS coverage, the GSM indicator
will be off.
Indicating no GSM/GPRS coverage or no SIM installed
Connect up to configure the modem as in the Local Configuration Section .
If you are unfamiliar with using AT commands, please review the Using AT
Commands Section first.
3.3 Modem Activation [C3111]
The Redwing GPRS modem requires a SIM [Subscriber Identity Module] for the
modem’s account activation. Units will usually be shipped with a SIM installed and
be ready to operate.
3.3.1 SIM Check
You can check if a SIM [Subscriber Identity Module] is in the Redwing with the
AT+CIMI command. If a SIM is in the modem, you will see a response like the
following:
at+cimi
310380006255650
OK
The number is the IMSI [International Mobile Subscriber Identity] which is unique
to each SIM.
If there is no SIM, there will be a blank response like the following:
at+cimi
OK
3.3.2 PDP Context
Check if the PDP context is correct with the command:
AT+CGDCONT?
You should get a response like:
at+cgdcont?
+CGDCONT:1,"IP","proxy","",0,0
AirLink Communications, Inc.
Page 7
September 14, 2004
Redwing GPRS Configuration
Redwing GPRS User Guide Version 2.01
OK
If you get a blank response, you need to set the PDP context. You need the APN
[Access Point Name] which you can obtain from the carrier rep or from whomever
you received the account. Some companies may be using a custom APN that allows
them to communicate with only the IPs in their APN.
To set the PDP context:
at+cgdcont=1,”IP”,”apn_obtained_from_carrier”
at&w
The modem will use this setting to attach to the GPRS network.
NOTE: These parameters are case sensitive. The “IP” is always upper case,
and the APN is usually lower case.
AirLink Communications, Inc.
Page 8
September 14, 2004
Using AT Commands
Redwing GPRS User Guide Version 2.01
4. Using AT Commands
Use a terminal emulation program to connect up to the modem either locally (via the
serial port of a computer) or remotely (over an existing internet connection on a PC to
the modem at a remote location).
Sample AT Commands
Here is an example of entering AT commands, changing some settings, saving and
resetting the modem. (Note that any command you are unsure of is explained in The
AT Commands section.)
Type AT and press the Enter key.
AT
You should get a response of "0" or "OK".
To turn on echo and verbose modes, type the following:
ATE1V1
You should see an "OK" response if Verbose Mode was properly activated (V1)
If you should see a “0” response, your modem is in Terse Mode and the V1 command
did not adhere.
Try ATV1 again by itself if that happens. You should see an “OK” response now.
To set the baud rate, (like 115200), type the following:
ATS23=115200,8N1
You should get an "OK" (if in Verbose Mode)
Note: Command settings take effect immediately unless otherwise noted in the
description.
Note: HyperTerm needs to be disconnected and reconnected after each baud rate
change to have it take effect.
AirLink Communications, Inc.
Page 9
September 14, 2004
Redwing AT Command Summary
Redwing GPRS User Guide Version 2.01
4.1 Redwing GPRS Specific AT Commands
These AT commands are specific to the Redwing GPRS devices and GPRS networks.
Command
Description
A/
Reissue the last command
Answer a call
Dn
Mobile-initiated call to dialable number n
DL
redial last telephone number used
set command echo mode
disconnect existing connection
display product identification information
switch from command mode to data mode
S0
set number of rings before automatically answering the call
S1
count the number of incoming rings
S2
set the character used to escape from data mode
S3
set termination character for a command prompt
S4
set response formatting character
S5
set editing character for a command prompt
S6
set pause before blind dialing
S7
set number of seconds to wait for connection to complete
S8
set number of seconds to wait when there is a comma dial modifier
S10
set disconnection delay after indicating the absence of data carrier
S12
set the escape code guard time
S13
set the disconnection delay after a call has been terminated
set result code format mode
set CONNECT result code format and call monitoring
set all current parameters to a user-defined profile
&C
set circuit Data Carrier Detect (DCD) function mode
&D
set circuit Data Terminal Ready (DTR) function mode
&F
set all current parameters to manufacturer defaults
&V
display current configuration
&W
store current parameter to user-defined profile
AirLink Communications, Inc.
Page 10
September 14, 2004
Redwing AT Command Summary
Command
+CGDCONT=cid,PDP_type,
APN [?]
Redwing GPRS User Guide Version 2.01
Description
Define the PDP context. Must be defined before a connection can be
made to the GRPS network. Needs to be configured only once, the
parameters are saved and used each time a connection is made to
the GPRS network.
cid = PDP Context Identifier: numeric parameter that specifies a
PDP context definition.
PDP_type = Packet Data Protocol type = “IP”
APN = Access Point Name a logical name that is used to select the
GGSN or the external packet data network.
Should be obtained from the carrier providing your service.
NOTE: The parameters are case sensitive.
Examples:
AT+CGDCONT = 1,”IP”,”proxy”
AT+CGDCONT = 1,”IP”,”apn_provided_by_carrier”
+COPS?
Returns the currently selected network operator.
AT+COPS?
AT&T Wireless
OK
+CREG
network registration
+GMI
request manufacturer identification
+GMM
request TA model identification
+GMR
request TA revision identification
+GSN
request TA serial number identification – International Mobile Equipment
Identification (IMEI)
+ICCID?
Returns the 20 digit SIM ID
AT+ICCID?
89310380101024729959
OK
+IPR
AirLink Communications, Inc.
set fixed local rate
Page 11
September 14, 2004
Redwing AT Command Summary
Command
Redwing GPRS User Guide Version 2.01
Description
+RCIQ?
Returns the current cell information.
C3110
AT+RCIQ?
Serving Cell Info:
BSIC: 5
TCH: 563
RSSI: -82dBm
LAC: 6035
Cell ID: 4043
Dedicated Channel Info:
TCH: 564
Channel Mode: 0
OK
If there is not coverage, or unit has not yet registered:
AT+RCIQ?
+RCIQ:
Not Registered with Network
BSIC = Base Transceiver Station Identity Code
TCH = Traffic Channel
RSSI = Received Signal Strength Indicator
LAC = Location Area Code
AirLink Communications, Inc.
Page 12
September 14, 2004
Redwing AT Command Summary
Redwing GPRS User Guide Version 2.01
4.2 Redwing AT Command Summary
Following is a summary of all the AT commands for the Redwing GPRS. For more
information on these commands, see AT Command Reference Guide for the RIM
OEM Radio Modem 1902G and 1802G.
Command
Description
A/
reissue the last command
+++AT
ESC from data mode to command mode
ATA
answer a call
ATD
mobile-initiated call to dialable number
ATD>
initiate call to phone number in memory 
ATD>
initiate call to phone number in current memory
ATD>
initiate call to phone number in memory with corresponding alphanumeric
field
ATDL
redial last telephone number used
ATE
set command echo mode
ATH
disconnect existing connection
ATI
display product identification information
ATL
set monitor speaker volume
ATM
set monitor speaker mode
ATO
switch from command mode to data mode
ATP
select pulse dialing
ATQ
set result code presentation mode
ATS0
set number of rings before automatically answering the call
ATS1
count the number of incoming rings
ATS2
set the character used to escape from data mode
ATS3
set termination character for a command prompt
ATS4
set response formatting character
ATS5
set editing character for a command prompt
ATS7
set number of seconds to wait for connection to complete
ATS8
set number of seconds to wait when there is a comma dial modifier
ATS10
set disconnection delay after indicating the absence of data carrier
ATS12
set the escape code guard time
ATS13
set the disconnection delay after a call has been terminated
ATV
set result code format mode
ATX
set CONNECT result code format and call monitoring
AirLink Communications, Inc.
Page 13
September 14, 2004
Redwing AT Command Summary
Command
Redwing GPRS User Guide Version 2.01
Description
ATZ
set all current parameters to a user-defined profile
AT&C
set circuit Data Carrier Detect (DCD) function mode
AT&D
set circuit Data Terminal Ready (DTR) function mode
AT&F
set all current parameters to manufacturer defaults
AT&V
display current configuration
AT&W
store current parameter to user-defined profile
AT+DR
V.42bis data compression reporting control
AT+DS
V.42bis data compression control
AT+GCAP
request complete terminal adaptor (TA) capabilities list
AT+GMI
request manufacturer identification
AT+GMM
request TA model identification
AT+GMR
request TA revision identification
AT+GSN
request TA serial number identification – International Mobile Equipment
Identification (IMEI)
AT+ICF
set terminal equipment to terminal adaptor (TE-TA) control character framing
AT+IFC
set TE-TA local data flow control
AT+ILRR
set TE-TA local rate reporting mode
AT+IMODE
set the interface communication mode
AT+IPR
set fixed local rate
AT+CAOC
set advice of charge
AT+CBST
select bearer service type
AT+CCFC
call forwarding number and conditions control
AT+CCID?
Request the SIM ID
AT+CCUG
closed User Group control
AT+CCWA
call Waiting Control
AT+CEER
extended error report
AT+CGMI
request manufacturer identification
AT+CGMM
request model identification
AT+CGMR
request revision identification
AT+CGSN
request product serial number identification (Identical with +GSN)
AT+CSCS
select TE Character Set
AT+CSTA
select Type of Address
AT+CHLD
call hold and multiparty
AT+CIMI
request international mobile subscriber identity
AirLink Communications, Inc.
Page 14
September 14, 2004
Redwing AT Command Summary
Command
Redwing GPRS User Guide Version 2.01
Description
AT+CLCC
list current calls of ME
AT+CLCK
facility lock
AT+CLIP
calling line identification presentation
AT+CLIR
calling line identification restriction
AT+CLVL
set the volume
AT+CMEE
report mobile equipment error
AT+COLP
connected line identification presentation
AT+COPS
operator selection
AT+CPAS
mobile equipment activity status
AT+CPBF
find phone book entries
AT+CPBR
read current phone book entries
AT+CPBS
select phone book memory storage
AT+CPBW
write phone book entry
AT+CPIN
enter PIN
AT+CPWD
change password
AT+CR
service reporting control
AT+CRC
set cellular result codes for incoming call indication
AT+CREG
network registration
AT+CRLP
select radio link protocol parameters for originating non-transparent data call
AT+CSQ
signal quality report
4.3 Redwing SMS Command Summary
Command
Description
AT+CMGD
delete SMS message
AT+CMGF
select SMS message format
AT+CMGL
list SMS messages from preferred store
AT+CMGR
read SMS message
AT+CMGS
send SMS message
AT+CMGW
write SMS message to memory
AT+CMSS
send SMS message from storage
AT+CMGC
send SMS Command
AT+CNMI
new SMS message indications
AirLink Communications, Inc.
Page 15
September 14, 2004
Redwing AT Command Summary
Command
Redwing GPRS User Guide Version 2.01
Description
AT+CPMS
preferred SMS Message Storage
AT+CRES
restore SMS settings
AT+CSAS
save SMS settings
AT+CSCA
SMS Service Center Address
AT+CSCB
select cell broadcast SMS messages
AT+CSDH
show SMS text mode parameters
AT+CSMP
set SMS text mode parameters
AT+CSMS
select Message Service
4.4 Redwing GPRS Commands
Command
Description
AT+CGDCONT
define PDP context
AT+CGQREQ
quality of service profile (requested)
AT+CGQMIN
quality of service profile (minimum acceptable)
AT+CGACT
context activation
AT+CGATT
GPRS attach or detach
AT+CGPADDR
show PDP address
AT+CGCLASS
GPRS mobile station class
AT+CGEREP
control unsolicited GPRS event reporting
AT+CGREG
network registration status
AT+CGSMS
select service for MO SMS messages
4.5 RIM [C3110] Specific AT Commands
Command
Description
ATRIMRADIO
turn the radio on or off using the software
ATRIMDEVICE
perform a hard reset of the modem
AT+ICCID
return integrated circuit card identification from the SIM card
AT+RCIQ
query cell parameter information
AT+RSCI
RIM select coverage indicator. Indicates which network is providing
coverage
AirLink Communications, Inc.
Page 16
September 14, 2004
Redwing GPRS Technical Specifications
Redwing GPRS User Guide Version 2.01
5. Redwing GPRS Technical Specifications
5.1 Physical Characteristics
Weight:
< 1 lb.
Size: 3.3” wide x 2” high x 6.8" long
RF Antenna Connector: 50 Ohm TNC
Serial Interface: RS232 DB-9F
Rugged aluminum case
5.2 Power Specifications
Input Voltage: 10 VDC to 28 VDC
Idle Input Current: 20 mA at 12V
Typical Transmit/Receive: 80ma at 12VDC
Max Input Current 150 ma at 12 VDC
5.3 Environmental
Operating ranges: -30°C to +70°C*
(<10%duty cycle limit above 60 °C)
Humidity: 5%-95%Non-condensing
AirLink Communications, Inc.
Page 17
September 14, 2004
Redwing GPRS Technical Specifications
Redwing GPRS User Guide Version 2.01
5.4 RF Features
Models G3110
Network: 1900/850 MHz GSM/GPRS
Transmit frequency: 1850-1910 MHz and 824-849 MHz
Receiver frequency: 1930-1990 MHz and 869-894 MHz
Transmit power range at antenna port: 1.0 W for 1900 MHz and 0.8W for 850 MHz
Multislot Class 8
Models G3111
Network: 1900/850 MHz GSM/GPRS
Transmit frequency: 1850-1910 MHz and 824-849 MHz
Receiver frequency: 1930-1990 MHz and 869-894 MHz
Maximum Transmit Power: 1.0 W for 1900 MHz and 2.0 W for 850 MHz
Multislot Class 10
5.5 Status LED Display
GSM
indicates GSM coverage if +RSCI=0
indicates GPRS coverage if +RSCI=1
Tx
indicates the radio is transmitting
Radio The OEM module radio is on and ready to transmit and receive
Pwr
The power is on.
5.6 Application Interface Features
RS232, 1200 bps to 115.2 kbps
AirLink Communications, Inc.
Page 18
September 14, 2004

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