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| Document Description | Revised Users manual |
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| Document Title | GPRS Technical Specifications.book |
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| Document Author: | KGOODFELLOW |
Technical Manual
with Specifications
Merlin and Expedite GPRS Products
P/N 90023363 Rev. 1.8
Notice: Restricted Proprietary Information
© Copyright Novatel Wireless Technologies Ltd. (2002)
The information contained in this document is the exclusive property of Novatel Wireless Technologies Ltd. All rights
reserved. Unauthorized reproduction of this manual in any form without the expressed written approval of Novatel Wireless
Technologies Ltd is strictly prohibited. This manual may not, in whole or in part, be copied, reproduced, translated, or
reduced to any electronic or magnetic storage medium without the written consent of a duly authorized officer of Novatel
Wireless Technologies Ltd.
The information contained in this document is subject to change without notice and should not be construed as a
commitment by Novatel Wireless Technologies Ltd. unless such commitment is expressly given in a covering document.
Novatel Wireless Technologies Ltd makes no warranties, either expressed or implied, regarding this document, its
merchantability, or its fitness, for any particular purpose.
Printed and produced in Canada.
i
Table of Contents
Chapter 1: Product Overview
Introduction to GSM and GPRS ....................................................................................2
GSM Technology............................................................................................................................. 2
Advantages of GPRS ...................................................................................................................... 3
GPRS Network Architecture ............................................................................................................ 4
Data Rates ...................................................................................................................................... 6
SIM .................................................................................................................................................. 6
Operational Features......................................................................................................7
Notices.............................................................................................................................8
Safety Warning ...................................................................................................................................... 8
FCC RF Interference Statement ............................................................................................................ 9
Regulatory Requirements ...................................................................................................................... 9
Technical Support Contacts................................................................................................................. 11
Limited Warranty and Liability.............................................................................................................. 11
Icon Usage .................................................................................................................................... 14
Chapter 2:
Specifications
Merlin GPRS PC Card Specifications .........................................................................15
Merlin General Specifications .............................................................................................................. 16
Merlin Physical Appearance ................................................................................................................ 18
PC Card Connector Pin Assignment.................................................................................................... 20
Interfaces ............................................................................................................................................. 22
Modes .................................................................................................................................................. 23
Expedite G301 OEM Module Specifications...............................................................24
Expedite General Specifications ................................................................................................... 24
Expedite Physical Appearance...................................................................................................... 25
Interfaces ............................................................................................................................................. 26
Modem Power-On and Wake up Strategy..................................................................................... 27
Serial Ports .................................................................................................................................... 28
GPIO ............................................................................................................................................. 28
Analog to Digital Converter (ADC) ................................................................................................ 29
Audio Port...................................................................................................................................... 29
Subscriber Identity Module Support .............................................................................................. 29
Electrostatic Discharge and Electromagnetic Interference............................................................ 29
Expedite Electrical Specifications ........................................................................................................ 30
Power Supply ................................................................................................................................ 30
Interface Signals............................................................................................................................ 31
Power-on and Wake-up Timing Characteristics ............................................................................ 34
Baseband Connector on Expedite................................................................................................ 36
Baseband Mating Connector on the Host ..................................................................................... 37
Baseband Connector Pin Numbering ............................................................................................ 37
Antenna Port ................................................................................................................................ 38
Antenna Connector ....................................................................................................................... 38
Mating Antenna Connector............................................................................................................ 38
P/N 90023363 Revision 1.9
ii
Mounting Features.........................................................................................................................38
Air Interface .................................................................................................................. 38
Subscriber Identification Module (SIM)...................................................................... 39
Modes of Operation ..................................................................................................... 40
Sleep..............................................................................................................................................40
SMS Messaging.............................................................................................................................40
Circuit Switched .............................................................................................................................40
GPRS Data ....................................................................................................................................40
Standby..........................................................................................................................................41
Application Information............................................................................................... 41
Chapter 3: AT Commands
AT Command Set by Function .............................................................................................................44
AT Command Set by Name .................................................................................................................53
A/ ..........................................................................................................................................................53
+++ .......................................................................................................................................................53
ATA ......................................................................................................................................................54
ATD[][mgsm>] ................................................................................................................................54
ATD[][] ...............................................................................................................56
ATD[][] .........................................................................................................................57
ATD[][] ............................................................................................................................59
ATDL ....................................................................................................................................................61
ATE ......................................................................................................................................................62
ATH ......................................................................................................................................................62
ATI........................................................................................................................................................63
ATI0......................................................................................................................................................63
ATL.......................................................................................................................................................63
ATM......................................................................................................................................................64
ATO ......................................................................................................................................................64
ATP ......................................................................................................................................................65
ATQ ......................................................................................................................................................65
ATS0 ....................................................................................................................................................66
ATS2 ....................................................................................................................................................66
ATS3 ....................................................................................................................................................67
ATS4 ....................................................................................................................................................67
ATS5 ....................................................................................................................................................68
ATS6 ....................................................................................................................................................69
ATS7 ....................................................................................................................................................69
ATS8 ....................................................................................................................................................70
ATS10 ..................................................................................................................................................70
ATS12 ..................................................................................................................................................71
ATT ......................................................................................................................................................71
ATV ......................................................................................................................................................72
ATX ......................................................................................................................................................72
ATZ ......................................................................................................................................................73
AT&C....................................................................................................................................................74
AT&D....................................................................................................................................................74
AT&F ....................................................................................................................................................74
AT&V ....................................................................................................................................................75
AT&W ...................................................................................................................................................76
Revision 1.9 P/N 90023363
iii
AT+CACM............................................................................................................................................ 76
AT+CALM ............................................................................................................................................ 76
AT+CAMM ........................................................................................................................................... 77
AT+CAOC............................................................................................................................................ 77
AT+CBC............................................................................................................................................... 78
AT+CBST............................................................................................................................................. 79
AT+CCFC ............................................................................................................................................ 80
AT+CCLK............................................................................................................................................. 81
AT+CCUG............................................................................................................................................ 82
AT+CCWA ........................................................................................................................................... 82
AT+CCWE ........................................................................................................................................... 84
AT+CDRIND ........................................................................................................................................ 84
AT+CEER ............................................................................................................................................ 85
AT+CEXTBUT ..................................................................................................................................... 85
AT+CEXTHS........................................................................................................................................ 86
AT+CFUN ............................................................................................................................................ 86
AT+CGACT.......................................................................................................................................... 87
AT+CGAPNR....................................................................................................................................... 87
AT+CGAPNW ...................................................................................................................................... 88
AT+CGATT .......................................................................................................................................... 89
AT+CGCLASS ..................................................................................................................................... 89
AT+CGDCONT .................................................................................................................................... 89
AT+CGEREP ....................................................................................................................................... 91
AT+CGMI............................................................................................................................................. 92
AT+CGMM ........................................................................................................................................... 92
AT+CGMR ........................................................................................................................................... 92
AT+CGOI ............................................................................................................................................. 93
AT+CGPADDR .................................................................................................................................... 93
AT+CGQMIN ....................................................................................................................................... 93
AT+CGQREQ ...................................................................................................................................... 94
AT+CGREG ......................................................................................................................................... 95
AT+CGSMS ......................................................................................................................................... 95
AT+CGSN............................................................................................................................................ 96
AT+CHLD ............................................................................................................................................ 97
AT+CIMI............................................................................................................................................... 97
AT+CLCC ............................................................................................................................................ 97
AT+CLCK............................................................................................................................................. 99
AT+CLDTMF...................................................................................................................................... 100
AT+CLIP ............................................................................................................................................ 101
AT+CLIR ............................................................................................................................................ 101
AT+CLTS ........................................................................................................................................... 102
AT+CLVL ........................................................................................................................................... 102
AT+CMEE.......................................................................................................................................... 103
AT+CMGD ......................................................................................................................................... 103
AT+CMGF.......................................................................................................................................... 103
AT+CMGL.......................................................................................................................................... 104
AT+CMGR ......................................................................................................................................... 106
AT+CMGW ........................................................................................................................................ 108
AT+CMSS.......................................................................................................................................... 109
AT+CMUT.......................................................................................................................................... 110
AT+CMUX.......................................................................................................................................... 110
AT+CNMI ........................................................................................................................................... 111
AT+CNUM ......................................................................................................................................... 112
AT+COLP .......................................................................................................................................... 113
P/N 90023363 Revision 1.9
iv
AT+COPN ..........................................................................................................................................114
AT+COPS ..........................................................................................................................................115
AT+CPAS...........................................................................................................................................116
AT+CPBF ...........................................................................................................................................116
AT+CPBR...........................................................................................................................................117
AT+CPBS...........................................................................................................................................118
AT+CPBW..........................................................................................................................................118
AT+CPIN ............................................................................................................................................119
AT+CPMS ..........................................................................................................................................120
AT+CPOL...........................................................................................................................................120
AT+CPUC ..........................................................................................................................................121
AT+CPWD..........................................................................................................................................121
AT+CR ...............................................................................................................................................123
AT+CRC.............................................................................................................................................123
AT+CREG ..........................................................................................................................................124
AT+CRES...........................................................................................................................................124
AT+CRLP ...........................................................................................................................................125
AT+CRSL ...........................................................................................................................................125
AT+CSAS...........................................................................................................................................126
AT+CSCA...........................................................................................................................................126
AT+CSCB...........................................................................................................................................127
AT+CSCS...........................................................................................................................................127
AT+CSDH ..........................................................................................................................................128
AT+CSIM............................................................................................................................................128
AT+CSMINS.......................................................................................................................................129
AT+CSMP ..........................................................................................................................................129
AT+CSMS ..........................................................................................................................................130
AT+CSQ.............................................................................................................................................131
AT+CSSN...........................................................................................................................................131
AT+CSTA ...........................................................................................................................................131
AT+CUSD ..........................................................................................................................................132
AT+DR ...............................................................................................................................................132
AT+DS................................................................................................................................................133
AT+FCLASS.......................................................................................................................................134
AT+FMI ..............................................................................................................................................134
AT+FMM ............................................................................................................................................135
AT+FMR.............................................................................................................................................135
AT+GCAP ..........................................................................................................................................135
AT+GMI..............................................................................................................................................136
AT+GMM............................................................................................................................................136
AT+GMR ............................................................................................................................................136
AT+GOI ..............................................................................................................................................137
AT+GSN.............................................................................................................................................137
AT+ICF...............................................................................................................................................137
AT+IFC...............................................................................................................................................138
AT+ILRR ............................................................................................................................................139
AT+IPR...............................................................................................................................................139
AT+NWOPN.......................................................................................................................................140
AT+NWRST .......................................................................................................................................140
AT+NWSIM ........................................................................................................................................140
AT+NWW ...........................................................................................................................................140
AT+VTD .............................................................................................................................................140
AT+VTS..............................................................................................................................................141
CME ERROR Codes for GSM 07.07 Commands ..............................................................................142
Revision 1.9 P/N 90023363
v
CMS Error Codes for GSM 07.05 Commands................................................................................... 143
Chapter 4: Firmware Setup and Upgrades
Updating Expedite Firmware.............................................................................................................. 145
Updating Merlin Firmware.................................................................................................................. 147
Troubleshooting ................................................................................................................................. 151
Chapter 5: Software Interface
Point-to-Point Protocol Interface ........................................................................................................ 156
Status Interface.................................................................................................................................. 156
Software Architecture......................................................................................................................... 157
Wireline Modem Interface .................................................................................................................. 158
Wrapper Protocol Overview ............................................................................................................... 158
Appendix A - Expedite Connectors ..........................................................................159
Appendix B - Merlin Connectors...............................................................................167
Merlin G100 Connectors .................................................................................................................... 167
Merlin G200 Connectors .................................................................................................................... 171
Appendix C – Expedite Development Kit Interface Board......................................177
Glossary ......................................................................................................................179
Index ............................................................................................................................185
P/N 90023363 Revision 1.9
vi
Revision 1.9 P/N 90023363
GPRS (General Packet Radio Service) is a digital, packet-switched, data
extension to the GSM voice and circuit-switched data network. GPRS
substitutes binary data for the voice data which is subsequently routed to a data
network (internet) rather than the public switched telephone network. This
routing features enables high-speed data communication on a global wireless
network, using the same frequency bands as the underlying GSM network.
GPRS provides single band 1900 MHz support within North America and dual
band support (900/1800 MHz) elsewhere in the world. Novatel Wireless products
provide fast and reliable wireless data communications at speeds up to
53.6 kbps in GPRS coverage areas, and circuit switched data to 14.4 kbps in
GSM coverage areas. (Where a network is set up for Multi-slot class 10 (MS-10)
and Coding Scheme 2 (CS-2), the maximum data rates with GPRS service are
53.6 kbps for uploading data and 26.8 kbps for downloading data.)
Adopted by 149 countries around the world, GSM is the most widely used digital
wireless standard in the world, with more than 330 million subscribers world
wide. The GSM association predicts that the number of subscribers will more
than triple by the year 2003.
Novatel Wireless GPRS/GSM products consist of the following.
• Merlin G100 PC Card (1900 MHz band) for North America.
• Merlin G200 PC Card (900/1800 MHz bands) for Europe and Asia.
• Merlin G201 PC Card, same as the G200 with a voice jack to make GSM
voice calls.
• Merlin G301 PC Card (900/1800/1900 MHz bands) for worldwide access
to GSM/GPRS networks.
• Expedite G301 OEM Module (900/1800/1900 MHz bands) for embedding
into wireless products for global GSM/GPRS access. The Expedite G301
is a triband OEM module that can be used in either the North American or
European markets.
Topics Included in this Chapter
Introduction to GSM and GPRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Operational Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Merlin and Expedite
Chapter 1: Product
Overview
2
Product Overview — Introduction to GSM and GPRS
Introduction to GSM and GPRS
GPRS is a packet-switched technology, meaning that on a GPRS network, information is
split into separate but related packets before being transmitted and reassembled upon
receiving. The use of packets allows for greater transport flexibility, as the data is not tied
to one specific transport protocol (TCP, LAT,.25X and Telnet are examples of other
transport protocols).
As well as providing the user with design and development information, this chapter will
also provide the user with information on the following GPRS elements:
• network requirements
• local system requirements
• Interfaces
•
hardware
•
air
•
electrical
• hardware (including pinout assignments)
• SIM card functions
GSM Technology
GSM uses a time division multiplexing access method that permits up to eight users to
communicate using one frequency channel. The channel is broken up into eight time slots
with each slot operating independently, sending data between the network and the mobile
device.
Figure 1 GSM–Merlin Interface
Revision 1.9 P/N 9002363
Product Overview — Introduction to GSM and GPRS
GPRS (General Packet Radio Service) is a digital, packet-switched, data extension to the
GSM voice and circuit-switched data network. In short, it substitutes binary data for the
voice data, which is subsequently routed to a data network, the Internet, rather than the
public switched telephone network. This enables high-speed data communication on a
global wireless standard, using the same frequency bands as the underlying GSM
network.
Advantages of GPRS
The advantage of a packet-based approach is that GPRS only uses the medium, in this
case the radio link, for the duration of time that data is being sent or received. GPRS has
one distinct advantage over the traditional GSM in that a channel is not dedicated to one
user. Communication channels are being used on a “shared-use as packets are needed”
basis rather than dedicated to one user at a time. This means that multiple users can
share the same radio channel. In contrast, with current circuit-switched connections,
users have dedicated connections during their entire call, whether they are sending data
or not. Many applications have idle periods during a session, with packet data, users will
only pay for the amount of data they actually communicate, and not the idle time.
Figure 2 GSM Vs. GPRS Data Transfer
P/N 9002363 Revision 1.9
4
Product Overview — Introduction to GSM and GPRS
GPRS Network Architecture
To better understand GPRS, we take a quick tour beginning with the mobile PC and
traversing through the network. First, we have a notebook computer connected to a
GPRS-capable modem through a serial cable, Universal Serial Bus (USB), or PC Card.
The GPRS modem communicates with GSM base stations, but unlike circuit-switched
data calls that are connected to voice networks by the mobile switching center, GPRS
packets are sent from the base station (BTS) to what is called a Serving GPRS Support
Node (SGSN).
Enabling GPRS on a GSM network requires the addition of two core modules:
• Gateway GPRS Service Module (GGSN)
The GGSN acts as a gateway between the GPRS network and the Public Data
Networks such as IP. GGSN’s also connect to other GPRS networks to facilitate
GPRS roaming.
• Serving GPRS Support Node (SGSN)
The SGSN provides packet routing to and from the SGSN service node for all
users in that particular service area. It also keeps track of the mobiles within its
service area. The SGSN communicates with what is called the Gateway GPRS
Support Node (GGSN), a system that maintains connections with other networks
such as the Internet or private networks. A GPRS network can use multiple
serving nodes, but requires only one gateway node for connecting to an external
network such as the Internet.
When the mobile station sends packets of data, it is via the SGSN to the GGSN, which
converts them for transmission over the desired network, which could be the Internet
networks or private networks. IP packets from the internet addressed for the mobile
station are received by the GGSN, forwarded to the SGSN and then transmitted to the
mobile station.
To forward IP packets between each other, the SGSN and GGSN encapsulate these
packets using a specialized protocol called the GPRS tunnel protocol (GTP) which
operates over top of standard TCP/IP protocols. The details of the SGSN and GGSN are
both invisible and irrelevant to the user who simply experiences a straight forward IP
connection that just happens to be wireless. See Figure 3 GPRS Network Architecture
below for an illustrated display of the GPRS network.
Revision 1.9 P/N 9002363
Product Overview — Introduction to GSM and GPRS
Figure 3 GPRS Network Architecture
An interesting aspect of GPRS is how it achieves its high speeds to over 100 kbps when
circuit-switched data today is limited to 9600 (baud rate) or 14.4 kbps. GPRS uses the
same radio channel as voice calls, a channel that is 200 kHz wide. This radio channel
carries a raw digital radio stream of 271 kbps, which for voice calls is divided into 8
separate data streams, each carrying about 34 kbps. After protocol and error correction
13 kbps remains for each voice connection or about 14 kbps for data.
Circuit-switched data today uses one voice channel. GPRS can combine up to 8 of these
channels, and since each of these can deliver up to 14 kbps of data throughput, the net
result is that users will be able to enjoy rates over 100 Kbps. But not all eight-voice
channels have to be used. In fact, most mobile stations (MS) will be ones that are limited
to 56 kbps. The GPRS standard defines a mechanism by which a MS can request the
amount of bandwidth it desires at the time it establishes a data session.
P/N 9002363 Revision 1.9
6
Product Overview — Introduction to GSM and GPRS
Data Rates
Four major factors affect actual GPRS data rates:
•
Multi-slot Class
Each timeslot can handle a given amount of data, established through
negotiation between the device and the network.
•
Channel Coding Scheme
Four CS schemes are defined, each with a different level of error correction
(basically “overhead”, similar to CDPD, which takes the 19.2 down to a real
data rate somewhere between 10 and 12 kbps). As the amount of error
correction is reduced, the quantity of data in the packets increases, but the
probability that packets of data will need to be retransmitted increases.
Conversely, as the amount of error correction increases, less data can be sent
in each packet or timeslot, but the chance that re-transmission of packets is
required decreases. With no error correction, a maximum of 21.4 kbps per
channel can be supported - which, at the maximum 8 timeslots, equals 171.2
(for CS-4) kbps. At CS-1, there is 9.05 kbps per timeslot; this increases to
13.4 kbps per timeslot at CS-2 and 15.6 kbps per time slot at CS-3.
•
Network Capacity
The device and the network will negotiate the appropriate combination of MS
class and CS scheme to determine the actual data, based on capabilities of
the device, and how busy the network is at a given point in time.
Because GPRS is an extension of the digital voice GSM network, voice calls
will always take priority over data calls (real time voice is more important than
data); therefore real data rates will, in many cases, be lower than the device
can support.
•
Quality of Service (QoS)
There is the ability to assign a Quality of Service to a specific account. The
QoS is used to guarantee a certain data rate as well as capacity.
Most devices will be limited to MS-10, which, at CS-2, is a maximum of 53.6
kbps (4 * 13.4 = 53.6) Rx and 26.8 kbps (4 * 13.4) Rx, or nominally 56 and 28.
SIM
GPRS requires a unique SIM (Subscriber Identity Module) card for each device. The SIM
Card identifies individual users to the network for billing and other purposes, ensures a
common set of SIM-based features, and maintains security with other GSM devices.
Revision 1.9 P/N 9002363
Product Overview — Operational Features
Merlin modem
SIM card
A SIM card must be present in the device at all times to allow network access.
A SIM card is required for all PC Card functions except emergency calls.
SIM cards can be moved from one device to another without the need to inform the
network carrier. SIM cards may be configured differently to support different modes of
operation.
Operational Features
Table 2: Summary of Operational Features
Feature
Description
Class of Operation
Class B: Modem supports both GSM CSD and GPRS Packet data, but will not support
both simultaneously
GSM Circuit Switched Data
(CSD)
Transparent and non-transparent CSD over GSM networks up to 14.4kbps
General Packet Data Service
(GPRS)
•
•
•
•
•
MS-10 operation
Type 1 device (Simplex RF operation)
up to 4 receive slots, up to 2 transmit slots, for a combined maximum of 5 slots
4/1, 3/1,3/2,2/2, 2/1 combination provides theoretical rates of up to 56 kbps
receive and 28 kbps transmit
automatically maintains GPRS virtual circuit when CSD or Voice traffic is present
SMS (Short Messaging Service)
Mobile originated and mobile terminated SMS messages.
Voice (May not be supported
on all devices)
Supports voice communication using any differential headset.
AT Commands
Standard GSM AT Command set with enhancements (See Chapter 3: AT Commands).
P/N 9002363 Revision 1.9
8
Product Overview — Notices
Feature
Description
Software Interface
•
•
•
standard GSM AT Command set with enhancements
supports PPP protocols for external hosting
supports channel coding schemes CS-1 and CS-2
Software included
•
Compatible with Windows 98SE/ME/2000/XP, Windows NT 4.0 SP4, Pocket PC
3.0 and Pocket PC 2002
Approvals
•
•
•
Full Type Approval, compliant to GSM Phase 2+ standard (all)
FCC Part 15 and Part 24 (PCS1900) (Merlin G100, G301, Expedite G301)
Essential requirements of the Radio and Telecommunications Terminal
Equipment (R&TTE) Directive, 1999/5/EC; 3GPP TS 51.010-1 Digital Cellular
Telecommunications SYstem (Phase 2+) Mobile Station (MS) conformance
Specification; Part 1: Conformance Specification (Merlin G201,G301)
Frequency Band
•
•
•
PCS 1900 North American GSM (Merlin G100) or
GSM 900 / DCS 1800 (Merlin G200 series) or
GSM 900 / PCS 1900 / DCS 1800 (Merlin G301 and Expedite G301)
Data Power Connector
•
•
standard 16 bit PCMCIA PC Card Interface
70 pin electrical interface for Expedite
SIM Card
•
SIM card supplied by the carrier as a separate item. Expedite provides connection
signals for an external SIM Module
Antenna Interface
•
•
standard 50-ohm MMCX antenna termination (Expedite G301, Merlin G201)
standard 50-ohm Radial MC card type antenna connector (Merlin G100)
Output Power Level
•
•
GSM Power Class 1 at DCS 1800 and PCS 1900 frequency bands.
GSM Power Class 4 at GSM 900 frequency bands
Temperature
•
Operating -10oC to +55 oC
•
Storage -30oC to +75 oC
•
nominal 3.6 volt DC supply for Expedite module
Power Supply
Notices
Safety Warning
Neither Merlin or Expedite GPRS products may be used in an environment where radio
frequency equipment is prohibited or restricted in its use. This includes aircraft/airports,
hospitals, and other sensitive electronic areas. To ensure that the modem is deactivated
remove it from the computer under the above conditions.
Under extended operation the Merlin modem will generate a noticeable amount of heat.
Like all PC Cards, the modem generates heat during normal operation and will be heated
by the host computer. For this reason it is recommended that after extended periods of
operation, prior to removal and handling, the user allow the modem to cool down.
Revision 1.9 P/N 9002363
Product Overview — Notices
FCC RF Interference Statement
Federal Communications Commission Radio Frequency Interference Statement.
This equipment has been certified to comply within the limits of a class B digital device
pursuant to part 15 and Part 24 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in residential situations. This
equipment generates, uses, and can radiate radio frequency energy, and, if not properly
installed and used in accordance with the instructions, may cause harmful interference to
radio or television reception, or to laptop computers and PDAs. This can be determined
by turning the equipment on and off. The user is encouraged to try to correct the
interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna of the television, radio or cordless
telephone.
•
Increase the separation between the equipment and the receiver.
•
Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.
•
Consult the dealer or an experienced radio/television technician for additional
suggestions
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
Regulatory Requirements
The regulatory requirements for the embedded module may include the following,
depending on the market where the module will be sold.
United States of America
FCC CFR47 Part 2 (General Rules and Regulations, RF Exposure Evaluation)
FCC CFR47 Part 15 (All Radio Frequency Devices)
FCC CFR47 Part 24 (Narrow and wideband PCS modules)
Canada
Industry Canada RSS-118 (Cellular Band)
Industry Canada RSS-102 (RF Exposure)
Industry Canada RSS-133 (2GHz PCS band)
Europe and Asia
Radio and Telecommunications Terminal Equipment (R&TTE) Directive, 1999/5/EC.”
Mobile Station (MS) Conformance Specification Part 1:3GPP TS 51.010-1.
Harmonized Radio Standard ETSI EN 301 511 V.7.0.1
P/N 9002363 Revision 1.9
10
Product Overview — Notices
Additional regulatory information for Asia will be made available in future versions of this
document.
Radio Frequency Exposure Evaluation Requirements
For applications that provide a separation of at least 20 cm from the radiating element to
the users and bystanders in the United States market, the embedded modules are treated
as “mobile devices” as per FCC CFR47 paragraph 2.1091.
A mobile device is defined as “a transmitting device designed to be used in other than
fixed locations and to generally be used in such a way that a separation distance of at
least 20 cm is normally maintained between the transmitter’s radiating structure(s) and
the body of the user or nearby persons.” The antenna type used for the radio frequency
exposure evaluation must be specified in the documentation and sold with the module. If
the module is used with a different antenna type and/or in a design where the separation
distance of 20 cm is not normally maintained, the radio frequency exposure evaluation
should be repeated for the new configuration. Use of this device in applications that
would not ensure the 20 cm minimum separation are in violation of the FCC quthorization
for this device. A new FCC application and authorization would be required for use at
less than 20 cm separation.
Some devices are not subject to radio frequency exposure evaluation prior to
equipment authorization, depending on the transmitter power level and
frequency band of operation.
Regulation and Compliance
The Merlin G100 conforms to ETSI EN 300 607-1 for the digital cellular
telecommunications system (Phase 2+) mobile station conformance specification, Part 1
Conformance Specification.
Merlin G200 Declaration of Conformity
The Merlin G200 Series (G200, G201) conforms to the essential requirements of the
Council Directive 1999/5/EC of the European Parliament and the Council on the basis of
Technical Construction. File titled “Merlin G200/G201” in relation to the essential
requirements of Article 3.2 of the Directive.
Technical Support Contacts
To obtain technical support for a Merlin GPRS PC Card, please contact the provider of
your GPRS SIM card, your local GSM/GPRS service operator, or the supplier of your
Merlin GPRS PC Card. Where local support is not available, contact the Novatel Wireless
Technical Support Team.
WWW: www.nvtl.com/support/index.htm
Email: gprs_support@nvtl.com
To obtain technical support for an Expedite GPRS OEM module, please contact your
NVTL sales agent to arrange a direct support contact.
Revision 1.9 P/N 9002363
Product Overview — Notices
11
Limited Warranty and Liability
Hardware Warranty
Novatel Wireless™ warrants that during the Warranty Period that:
1. the Product will be free from defects in material and workmanship under
normal use and service and will conform to Novatel Wireless’s (Novatel
Wireless Technologies™) specifications
2. the software will be free from error that materially affect performance
Products
One (1) year
Accessories
90 days (in each case from the date sold by Purchaser)
These warranties are expressly written in lieu of all other warranties, either expressed or
implied, including, without limitation, all implied warranties of merchantability and fitness
for a particular purpose. Novatel Wireless™ liability hereunder is expressly limited to
refund of all amounts paid to Novatel Wireless™ for any defective units or products,
whether Novatel Wireless™ liability arises from breach of warranty, or with respect to any
obligation arising from breach of warranty, or otherwise with respect to the manufacture
and sale of any units of the product, whether liability is asserted in contract or tort,
including negligence and strict product liability. Novatel Wireless™ shall in no event be
liable for special, indirect, incidental, or consequential damages of any kind or nature due
to any cause.
Purchaser’s exclusive remedy for a claim under this warranty shall be limited to the repair
or replacement, at Novatel Wireless™’s option, of defective or nonconforming materials,
parts or components.
The foregoing warranties do not extend to the following:
•
nonconformities, defects or errors in the Products due to accident, abuse,
misuse or negligent use of the Products or use in other than a normal and
customary manner, environmental conditions not conforming to Novatel
Wireless™’s specifications, or failure to follow prescribed installation,
operating and maintenance procedures
•
defects, errors or nonconformities in the Products due to modifications,
alterations, additions or changes not made in accordance with Novatel
Wireless™’s specifications or authorized by Novatel Wireless™
•
normal wear and tear
•
damage caused by force of nature or act of any third person, (v) shipping
damage
•
service or repair of Product by the Purchaser without prior written consent
from Novatel Wireless™
P/N 9002363 Revision 1.9
12
Product Overview — Notices
•
products designated by Novatel Wireless™ as beta site test samples,
experimental, developmental, preproduction, sample, incomplete or out of
specification Products
•
returned Products if the original identification marks have been removed or
altered
Software Warranty
Novatel Wireless™ warrants that for a period of 12 months from delivery at the FCA
point, that the Products are free from defects in material and workmanship, conform to
Novatel Wireless™ specifications and the software is free from errors which materially
affect performance. This warranty is exclusive and Novatel Wireless™ makes no
representation or warranty of any other kind, express or implied, with respect to its
products, whether as to merchantability, fitness for a particular purpose or any other
matter. The foregoing warranty does not extend to (i) non-conformities, defects or errors
in the Products due to accident, abuse, misuse or negligent use of the Products or use in
other than a normal or customary manner, environmental conditions not conforming to
Novatel Wireless™’s specifications, or failure to follow prescribed operating and/or
maintenance procedures; (ii) defects, errors or non-conformity in the Products due to
modifications, alterations, additions, or changes not made or authorized to be made by
Novatel Wireless™; (iii) normal wear and tear; or (iv) damage caused by force of nature
or act of any third party.
• Novatel Wireless™’s obligations are limited to correction of a failure or defect in
the Products by implementation of a module swap whenever practicable. Novatel
Wireless™ does not warrant that the execution of the software shall be
uninterrupted or error free.
• In the event of a warranty claim, the Purchaser shall return the Products to Novatel
Wireless™’s Calgary facility for testing and examination at the Purchaser’s
expense. After testing and examination Novatel Wireless™ shall either:
•
determine the claim is a valid warranty claim in which case the Products
will be repaired and returned to the Purchaser at Novatel Wireless™’s cost
and the Purchaser shall be reimbursed for the original cost of shipping the
Products to Novatel Wireless™ to evaluate the warranty claim
or
•
determine the claim is not valid or that the warranty has been voided in
which case the Products shall be returned to the Purchaser at the
Purchaser’s cost
• Purchaser’s exclusive remedy for claims arising hereunder shall be for damages.
Novatel Wireless™’s liability for any and all losses and damages to purchaser
resulting from any cause whatsoever including Novatel Wireless™’s negligence or
alleged damage or defective products, irrespective of whether such defects are
discoverable or latent, shall in no event exceed the purchase price of the particular
products with respect to which losses or damages are claimed, or at Novatel
Wireless™’s election, the repair or replacement of defective or damaged products
or the issuance of a credit memo in lieu thereof. In no event, including in the case
of a claim of negligence, shall Novatel Wireless™ be liable for incidental or
consequential damages.
Revision 1.9 P/N 9002363
Product Overview — Notices
13
Novatel Wireless™ may, at its discretion, implement changes in the Products, modify the
drawings and its specifications for the Products, or substitute product of more recent
design; provided, however, that any such changes, modifications or substitutions, under
normal and proper use shall not materially and adversely affect functional performance,
form or fit of the Products. Novatel Wireless™ agrees to use reasonable efforts to provide
the Purchaser with 30 days written notice of such changes.
Version Compatibility
Novatel Wireless™ will make all efforts to ensure that firmware upgrades are backwards
compatible with earlier versions of both firmware and hardware. Hardware revisions
introduced must be used with factory loaded firmware or a compatible version of a later
release. At no time will Novatel Wireless™ warrant a device which is loaded with a
firmware version which predates the devices hardware revision date.
Validity of Warranty Claim
The validity of any warranty claim shall be subject to, and conditional upon confirmation
by Novatel Wireless™ within 30 days from receipt of such claim. Postage, freight or other
such transportation charges for shipping parts subject to the warranty claim to an
authorized Novatel Wireless™ repair facility shall be borne by Purchaser. The Purchaser
agrees to pay an additional $40/unit to cover the cost testing and handling for any unit
submitted which is determined by Novatel Wireless™ to be invalid claim. Novatel
Wireless™ shall bear the cost of postage, freight or other such transportation charges for
the return to Purchaser provided the warranty claim is determined by Novatel Wireless™
to be a valid claim. Any unit repaired or replaced under warranty shall be warranted only
for the balance of the warranty period already in effect for the original item or if the
balance of the warranty period is less than 90 days, the warranty shall be for 90 days from
the date of repair or replacement.
Care, Repair and Return
The following criteria must be met prior to returning products to Novatel Wireless Inc™.:
• Contact our Technical Support team to obtain a Return Material Authorization
(RMA) number. An RMA number is valid for 15 business days and must be received
within those 15 days.
The following information must be provided:
•
IMEI or serial number
•
reason for return
•
original invoice (if possible)
•
user name, phone number, email address
•
charging information
• Returns on defective products are not subject to the 15% restocking fee. The
product defect must be verified by the Novatel Wireless™ Technical Support staff
before a replacement unit or refund is issued.
• Defective products that are returned outside of the 30 day period, but still covered
by Novatel Wireless™ Limited Warranty will either be repaired or replaced. No
refund is issued on these units.
P/N 9002363 Revision 1.9
14
Product Overview — Notices
• Returns on defective products that are no longer covered by the Novatel Wireless™
Limited Warranty will be subject to a repair fee. Please contact our Technical
Support staff for more information.
• Returns on opened, non-defective product are subject to a 15% restocking fee. All
items must be in “as new” condition, in the original packaging and include all
warranty cards, documentation and software. Should any items be missing the user
will be billed or a portion of the refund will be deducted.
• There will be a $15.00 repackaging fee for products not returned in the original
packaging. The user is responsible for shipping costs on all returns.
• There are no returns for credit on product accessories.
Mailing Address
Novatel Wireless, Inc™.
9360 Towne Centre Drive, Suite 110
San Diego, CA 92121-3030
Icon Usage
Throughout this manual icons are used to signify information that may require special
attention. The icons are as follows:
Note: Signifies an item that may be noted and used in more then one
situation.
Hint: Signifies a time saver or a specific function that must be performed in
order to experience success. May also indicate that a shortcut may be used.
Reference Material: Other sources of information exist and may be referred
to.
Warning: Performing a specific function may cause an operation to fail,
subsequently losing information or affecting system performance.
Revision 1.9 P/N 9002363
Chapter 2:
Specifications
This section contains specifications for Merlin G100 and G200 GPRS PC Card
modems and the Expedite G301 OEM modem module.
The Merlin G100 and G200 are wireless modems designed to be plugged into
the PC Card slot of a host computer.
Topics Included in this Chapter
Merlin GPRS PC Card Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Expedite G301 OEM Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . 24
Air Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Subscriber Identification Module (SIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Merlin and Expedite
Merlin GPRS PC Card Specifications
16
Specifications Merlin GPRS PC Card Specifications
Merlin General Specifications
Table 3: General Specification for Merlin GPRS PC Cards
Physical Dimensions
and Weight
Merlin G100
Merlin G200
111.64 mm
111.71mm
54.0 mm
54.0 mm
Length
Total
Width
Without Antenna
With Antenna
60.63 mm
Thickness
Insertion Thickness
5.60 mm
5.60 mm
Exposed Thickness
7.68 mm
8.96 mm
49.1 gm
51.0 gm
Weight
Complete Modem (unpackaged)
Temperature
Temperature Range
Operating -10oC to 55 oC
Storage -30oC to 75oC
Relative Humidity
Maximum operating humidity at 50oC (noncondensing)
up to 95% Non-condensing
Recommended Operating Conditions
Maximum Supply Input Voltage
5.25 v
Minimum Supply Input Voltage
4.75 v
Recommended Supply Voltage
5v
Supply Voltage Range
4.75 to 5.25 v DC
Moisture and Dust Resistance
Do not immerse or expose to excessive moisture. The case is not to be considered dustproof.
Thermal Shock
Merlin G100
Merlin G200
Non-Operating
-50 oC to +20 oC, +70 oC to
-200C to 550C
+20 oC; less than 5 min
Revision 1.9 P/N 90023363
Specifications Merlin GPRS PC Card Specifications
17
Vibration
Sinusoidal
3.0 mm displacement, 2 to 9
Hz; 1 m/s2, 9 to 350 Hz
147 m/s2, 15g peak amplitude, 10Hz-2000 Hz
Random
0.1 m2 /s3, 2 to 200 Hz
0.96 m2/s3, 5 Hz-20Hz, 3db/0ct, 20 Hz-500Hz
Transport
Packaged ASTM D999
N/A
Mechanical Shock
N/A
semi sine 50 g 11ms
Electromagnetic Emissions
Radiated spurious FCC part
24 / Part 15 Class \ BGSM
11.10 Section 12.2EN 55022
Class B
EMC: ETSI EN 301489-1
Electromagnetic Immunity
As per ETSI ETS 300 342-1
N/A
Electrostatic Discharge (ESD) for PC Connector
To Contacts 2 KV
ESD IEC 61000-4-2
To Antenna Port 8 KV
To contacts: 8kv
To Case 10 KV
To antenna port: 8kv
Emissions
To audio jack: 8kv
To case: 8kv
Transmit Power
GSM Power Class 1
GSM Power Class 4
•
•
DCS 1800 / PCS1900
GSM 900
Connectors
Antenna
RADIALL SMT microminiature 50 ohm coaxial connector
(PN R199-005801)
HUBER + SUHNER SMT
MMCX 50 ohm coaxial
connector (PN 82 MMCX S50-0-2)
Audio
No audio jack
HOSIDEN audio jack (PN
HSJ1816-019010)
PC Card Connector
ITT CANNON 68 pin connector (PN 127040-2414
5925)
ITT CANNON 68 pin connector (PN 127040-2414
5925)
SIM Connector
ITT CANNON
(PN CCM04)
JAE SIM Socket (PN SF
2W006S4KE3000)
P/N 90023363 Revision 1.9
18
Specifications Merlin GPRS PC Card Specifications
Merlin Physical Appearance
Merlin G100.
Front View
Back View
60.63
68-Pin Connector
7.68
Side View
Figure 1: Mechanical View of MerlinG100
Revision 1.9 P/N 90023363
Specifications Merlin GPRS PC Card Specifications
19
Merlin G200
Back View
Front View
54.00
68-Pin Connector
Audio
Jack (G201
only)
8.96
Side View
Figure 2: Mechanical View of Merlin G200 Series
P/N 90023363 Revision 1.9
20
Specifications Merlin GPRS PC Card Specifications
PC Card Connector Pin Assignment
Table 4 below contains the pinout information of the 68-pin Merlin PC Card connector.
Table 4: Merlin GPRS PC Card Pin Assignment
Pin #
Signal Name
Direction
GND
Power
D3
Supported
D4
Supported
D5
Supported
D6
Supported
D7
Supported
CE#1
Supported
A10
Not Connected
OE#
Supported
10
A11
Not Connected
11
A9
Supported
12
A8
Supported
13
A13
Not Connected
14
A14
Not Connected
15
WE#
Supported
16
IREQ#
Supported
17
VCC
Card is configured as a 5V card.
18
VPP1
Not Connected
19
A16
Not Connected
20
A15
Not Connected
21
A12
Not Connected
22
A7
Supported
23
A6
Supported
24
A5
Supported
25
A4
Supported
26
A3
Supported
27
A2
Supported
28
A1
Supported
29
A0
Supported
Revision 1.9 P/N 90023363
Specifications Merlin GPRS PC Card Specifications
30
D0
Supported
31
D1
Supported
32
D2
Supported
33
IOIS16#
Pulled High
34
GND
Power
35
GND
Power
36
CD#1
Connected to Card Ground
37
D11
Not Connected
38
D12
Not Connected
39
D13
Not Connected
40
D14
Not Connected
41
D15
Not Connected
42
CE2#
Supported
43
VS1#
Not Connected (SELECTS VCC = 5V FOR CARD)
44
IORD#
Supported
45
IOWR#
Supported
46
A17
Not Connected
47
A18
Not Connected
48
A19
Not Connected
49
A20
Not Connected
50
A21
Not Connected
51
VCC
POWER, Card is configured as a 5V card
52
VPP2
Not Connected
53
A22
Not Connected
54
A23
Not Connected
55
A24
Not Connected
56
A25
Not Connected
57
VS2#
Not Connected (SELECTS VCC = 5V FOR CARD)
58
RESET
Supported
59
WAIT#
Supported
60
INPACK#
Pulled High
61
REG#
Supported
62
BVD2/SPKR#
Pulled High, No Audio
63
BVD1/STSCHG#
Pulled High
P/N 90023363 Revision 1.9
21
22
Specifications Merlin GPRS PC Card Specifications
64
D8
Not Connected
65
D9
Not Connected
66
D10
Not Connected
67
CD2#
Connected To Card Ground
68
GND
Connected To Card Ground
Interfaces
Merlin Hardware Interface
The modem is electronically configured as a 5-Volt 8-bit I/O memory card. The supported
pins on the 68 position interface connector are driven by a LVTTL interface IC that
includes 5V tolerant inputs and runs off a 3.1V power supply. Signals driven by this card
will reach 3.1V but can accept 5V logic levels on inputs.
Air Interface
Table 5: Air Interface Data Rates
Coding
Scheme
Data Rates per Time Slot
(Kbps)
Maximum Data Rate (8
Time Slots)
CS1
9.05
72.4
CS2
13.4
107.2
Table 6: Radio Channel Frequency
Radio Channel Frequency
Bands
P-GSM 900
E-GSM 900
Channel
Tx
Rx
1 < n < 124
Freq(n)=890+0.2*n
Freq(n)=935+0.2*n
0 < n < 124
Freq(n)=890+0.2*n
Freq(n)=935+0.2*n
975 < n < 1023
Freq(n)=890+0.2*(n-1024)
Freq(n)=935+0.2*(n-1024)
DCS 1800
512 < n < 885
Freq(n)=1710.2+0.2*(n-512)
Freq(n)=1805.2+0.2*(n-512)
PCS 1900
512 < n < 810
Freq(n)=1850.2+0.2*(n-512)
Freq(n)=1930.2+0.2*(n-512)
Revision 1.9 P/N 90023363
Specifications Merlin GPRS PC Card Specifications
23
Table 7: Radio Power Index
Radio Power Index
Bands
Index
Power
GSM 900
5-19
2dB Incremental steps
PCS 1900/DCS 1800
0-15
2dB Incremental steps
Table 8: PCS Gain Index
0 - 25
0 = min gain, 25 = max gain
Modes
The Merlin GPRS PCS PC Card supports both memory mode and I/O mode.
Memory Mode
When the Merlin GPRS PCS PC Card is inserted into a PC card host, the card will power
up in memory mode. In this mode, the host will read CIS from the attribute memory on the
card and then configure the card for I/O mode and assign the card a COM port. This
process is automatic and transparent to the user.
The Merlin GPRS PCS PC Card does not provide the host with any additional
RAM or FLASH storage.
I/O Mode
Once the GPRS PCS PC Card has been configured and the COM port assigned, the card
will then be in 8-bit I/O mode. The information that the host will read from CIS memory will
indicate that the device is a modem card with a serial port interface containing a UART
type of 16550. The combination of the base addresses and IRQs, in the order that the
modem will accept, are listed below in Table 9: Base Addresses and IRQs.
Table 9: Base Addresses and IRQs
Base Address
IRQ
Comment
3F8
Only level interrupts are supported
2F8
Only level interrupts are supported
3E8
Only level interrupts are supported
2E8
Only level interrupts are supported
Any base address
7- 0 and 15 - 8
Only level interrupts are supported
P/N 90023363 Revision 1.9
24
Specifications Expedite G301 OEM Module Specifications
Expedite G301 OEM Module
Specifications
The Expedite G301 is a tri-band GSM/GPRS radio module designed to be integrated by
third party developers into a finished product.
Expedite General Specifications
Table 10: Technical Specification for Expedite G301 Module
Physical Dimension and Weight
Specifications
Length
50.0 ± 0.30 mm
Width
37.0 ± 0.30 mm
Thickness
5.0 mm (maximum)
Temperature
Temperature Range
Operating -100C to +600C
Storage -30oC to 75oC
Relative Humidity
Maximum operating humidity at 50oC (non-condensing)
Up to 95% Non-condensing
Recommended Operating Conditions
Maximum Supply Input Voltage
4.5 V
Minimum Supply Input Voltage
3.4 V
Supply Voltage Range
3.4 to 4.5 VDC
Moisture and Dust Resistance
Do not immerse or expose to excessive moisture. The case is not to be considered dust proof.
Vibration
Sinusoidal
3.0 mm displacement, 2 to 9 Hz; 1 m/s2, 9
to 350 Hz
Random
0.1 m2 /s3, 2 to 200 Hz
Transport
Packaged ASTM D999
Emissions
Electromagnetic Emissions
Meets radiated spurious FCC part 24 /
Part 15 Class \ BGSM 11.10 Section
12.2EN 55022 Class B
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
Electromagnetic Immunity
25
As per ETSI ETS 300 342-1
Data Rates
Host Interface Baud Rate
The module supports as a minimum, asynchronous data transmission of the following rate and format:
Baud Rate: 9600, 19200, 57600, 115200
Data Bits: 8
Parity: None
Stop Bits: 1
Transmit Power
GSM Power Class 1
•
•
GSM Power Class 4
DCS 1800 / PCS1900
GSM 900
Expedite Physical Appearance
70-pin Baseband
Connector
Figure 3 Expedite G301 Mechanical Dimensions
P/N 90023363 Revision 1.9
26
Specifications Expedite G301 OEM Module Specifications
Interfaces
Expedite Host Interface Signals
The Expedite interfaces to a host via a 70 pin baseband connector. Table 11 describes
the signals on the connector.
Table 11: Expedite Host Interface Signals
Signal
Pin
Description
Direction
GND
6, 9, 14, 15,
16, 17, 26, 27,
42, 60, 61, 66
Ground
SUPPLY
VCC
28, 29, 30, 31
Power Supply (except Power Amplifier)
SUPPLY
VBAT_PA
18, 19, 20, 21,
22, 23, 24, 25
Power Amplifier Supply
SUPPLY
MDM_RDY
59
Indicates to host that Modem is ready to communicate
OUT
PWR_ON
58
Dual Function pin. Used to turn modem on (and off in
the second mode).
IN
SM_IND
57
Sleep Mode Indicator. A high signal indicates that the
modem is in sleep mode.
OUT
WAKE_UP
63
An edge triggered interrupt pin to wake up the modem
from sleep mode.
IN
PUL_PWREN
69
Pulse-Power-Enable. Selects between pulse mode
modem turn on and solid mode turn on. A high on this
pin will select pulse mode.
IN
RESET_N
70
Active low input to perform a hardware reset on the
modem. Internally pulled up on Modem.
IN
TX_STAT
68
Transmit status. Active high signal indicating to host
that the modem’s radio is transmitting.
OUT
DTM
56
Data To Modem. Asynchronous serial data to modem.
IN
DFM
55
Data From Modem. Asynchronous serial data from
modem.
OUT
DTR
54
Data Terminal Ready. Active High signal indicating to
the modem that the host terminal is active.
IN
DSR
53
Data Set Ready. Active high signal indicating to the
host that the modem terminal is active.
OUT
CTS
52
Clear To Send. Active high signal indicating to the host
that the modem can receive characters.
OUT
RTS
51
Ready To Send. Active high signal indicating to the
modem that the host can receive characters.
IN
GPIO1
49
General Purpose Input/Output 1
BiDir
GPIO2
50
General Purpose Input/Output 2
BiDir
GPIO3
47
General Purpose Input/Output 3
BiDir
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
27
GPIO4
46
General Purpose Input/Output 4
BiDir
GPIO5
45
General Purpose Input/Output 5
BiDir
GPIO6
44
General Purpose Input/Output 6
BiDir
ADC_IN_1
Analog to Digital Converter. The modem can monitor a
voltage on this pin.
IN
VCC_SIM
36
Subscriber Identity Module Supply. Used to supply the
power to an off-board SIM.
SUPPLY
DATA_SIM
34
SIM data line.
BiDir
RST_SIM
39
SIM reset line.
OUT
CLK_SIM
32
SIM clock line.
OUT
SIM_IN
33
SIM detect line. Active high signal indicating to the
modem that a SIM is present
IN
MIC_INP
Differential Microphone Input (+) for voice communications.
IN
MIC_INN
Differential Microphone Input (-) for voice communications.
IN
SPKR_OUTP
Differential Speaker Output (+) for voice communications.
OUT
SPKR_OUTN
Differential Speaker Output (-) for voice communications.
OUT
BUZZER
Buzzer control signal from modem.
OUT
RTS_2
38
Ready to Send for the secondary serial port on the
modem.
IN
DFM_2
43
Data to Modem for the secondary serial port on the
modem.
OUT
DTM_2
40
Data from Modem for the secondary serial port on the
modem.
IN
CTS_2
41
Clear to Send for the secondary serial port on the
modem.
OUT
Pins numbers not mentioned in the table should be left unconnected.
Modem Power-On and Wake up Strategy
The Expedite G301 is designed so that the host has full control of powering up and
powering down the unit, both by hardware and software. There are two schemes available
to perform this function to accommodate different host preferences.
The first mode is called “pulsed power-on” and is selected by the host holding the
PUL_PWREN signal high. Note that there is an internal 47kΩ pull-up resistor to 2.5V on
this signal and it can be left unconnected on the host side. The second mode is called
“solid power-on” and is selected by the host holding the PUL_PWREN signal low.
P/N 90023363 Revision 1.9
28
Specifications Expedite G301 OEM Module Specifications
There is also a WAKE_UP signal which is used to wake the modem up from a sleep state.
This signal is rising edge interrupt triggered. The host can determine if the modem is in
sleep mode by polling the SM_IND signal which will be asserted high when the modem is
asleep.
The MDM_RDY signal is asserted high when the modem is capable of communicating
with the host. MDM_RDY should always be used by the host to enable buffers that are
used for inputs to the modem. In the event that MDM_RDY is deasserted, the modem is
not capable of sending or receiving data on either of it’s serial ports.
A description of each power on mode is given below.
Pulsed Power-On
With the PUL_PWREN pin in a high state, the modem must be powered on by providing
an active high pulse of minimum 600mS to the PWR_ON pin. Once MDM_RDY goes high,
PWR_ON can drop and the modem will stay on.
This mode of operation will allow the modem to be shut down by a software AT command
(ATH4). When the command is issued, the processor will deregister from the network and
perform any power down activities required and then will drive MDM_RDY low before
powering off.
Solid Power-On
With the PUL_PWREN pin in a low state, and the PWR_ON signal is driven high, the
modem will turn on. The PWR_ON signal must remain high to keep the modem on.
This mode of operation will not permit a software shutdown.
If the modem is to be operated with this method, care must be taken to perform the
necessary network activities (eg. De-registration) before shutting the modem off.
Serial Ports
The Expedite module has two serial ports (primary and secondary) used to communicate
with the host and other peripheral devices. The primary serial port consists of the DTR,
DSR, RTS, CTS, DTM, and DFM signals. It operates at baud rates of 9600 to 115200, has
8 data bits, no parity bit, and 1 stop bit per character. The inputs (DTR, RTS, and DTM)
are buffered from the host allowing for a voltage to be present on these lines even when
the modem is off. Note that all other inputs to the modem, with the exception of ADC_IN
need to be externally buffered so as not to present a voltage when the modem is off.
When the modem goes to sleep, typically on a sleep schedule, it will deassert it’s CTS
line to indicate to the host that it cannot accept characters. Hardware flow control support
is obligatory so that the host does not accidentally send characters while the modem is
asleep. The sleep schedule will be determined by each network carrier, but typically the
modem will not sleep for more than 2 seconds at a time.
All network traffic will travel on the primary serial port.
GPIO
The Expedite provides 6 separate GPIO’s that can be individually programmed via
software AT commands.
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
29
The GPIO’s are not buffered from the host and therefore no voltage may be present on
these lines when the modem is off. The MDM_RDY signal should be used to enable host
side buffers.
Analog to Digital Converter (ADC)
The Expedite provides an Analog to Digital Converter port that can be used to monitor
battery voltage. It can monitor a voltage from 500mV to 6V
Audio Port
The Expedite design provides the connections for a differential microphone and speaker
as well as a buzzer. Testing has shown that for optimal performance, a differential
configuration should be used. This will eliminate common mode noise that inherently
exists in a GSM system especially during the transmit bursts. The microphone circuit
should incorporate an RC low pass filter designed to reduce noise in the 900 MHz and
higher bands.
The buzzer output is a single-ended output with limited drive capability. An external
transistor buffer is suggested to drive the buzzer.
Subscriber Identity Module Support
The Expedite G301 supports a 3.3V SIM as described in ETSI 11.12. The relevant signals
are brought out on the 70 pin connector.
The ETSI specification dictates that the system be made aware if the SIM is disconnected
during operation. This function is handled by the SIM_IN signal. This line should be
asserted high when a SIM is present. The SIM_IN signal is pulled low on the Expedite
module by a 4.7kΩ resistor so that when a SIM is not present the line will be low. Care
should be taken not to use a weak pull-up for the SIM_IN signal. If the module will be
integrated into a system in which the SIM cannot be removed without powering down the
modem, the SIM_IN signal can be tied to the VSIM rail.
Electrostatic Discharge and Electromagnetic
Interference
The modem does not protect itself from ESD. It is the responsibility of the host to ensure
that there will not be any harmful discharges to the modem.
With regard to EMI, the modem will meet FCC part 15 for North American markets, and
ETSI EN 301 489-1 for European markets.
P/N 90023363 Revision 1.9
30
Specifications Expedite G301 OEM Module Specifications
Expedite Electrical Specifications
Power Supply
Table 12: GSM 900 Mhz Mode:
Specification
Conditions
Power Supply Requirement
Current Draw (Average)
VBAT_PA
VCC
MIN
MAX
MIN
MAX
3.4V
4.5V
3.4V1
4.7
TOTAL
1 slot RX / 1 slot TX
390mA
3 slot RX / 2 slot TX
560mA
Current Draw (Tx average over burst)
1700mA
Current draw (Rx)
150mA
Current Draw in Sleep
Mode (average including
brief wakeup periods)
15mA
Current Draw in Sleep
Mode (instantaneous)
5mA
Current Draw (Modem
Off)
Vcc, Vpa present
100uA
1. Vcc can drop as low as 3.0 Volts. However, the interface voltages will be out of regulation below
3.4V.
Table 13: DCS 1800Mhz Mode:
Specification
Conditions
Power Supply Requirement
Current Draw (Average)
VBAT_PA
VCC
MIN
MAX
MIN
MAX
3.4V
4.5V
3.4V
4.7
TOTAL
1 slot RX / 1
slot TX
300mA
3 slot RX / 2
slot TX
400mA
Current Draw (Rx)
150mA
Current Draw (Tx average over
1400mA
burst)*
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
31
Current Draw in Sleep Mode (average including brief wakeup periods)
15mA
Current Draw in Sleep Mode (instantaneous)
5mA
Current Draw (Modem Off)
Vcc, Vpa
present
100uA
Table 14: PCS 1900MHz Mode:
Specification
Conditions
Power Supply Requirement
Current Draw (Average)
VBAT_PA
VCC
MIN
MAX
MIN
MAX
3.4V
4.5V
3.4V
4.7
TOTAL
1 slot RX / 1
slot TX
300mA
3 slot RX / 2
slot TX
400mA
Current Draw (Tx average over
1400mA
burst)*
Current Draw (Rx)
150mA
Current Draw in Sleep Mode (average including brief wakeup periods)
15mA
Current Draw in Sleep Mode (instantaneous)
5mA
Current Draw (Modem Off)
Vcc, Vpa
present
100uA
Interface Signals
Table 15: Interface Signals
Parameter
Min
Typical
Max
Primary Serial Port
VOH
3.0V
3.4
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32
Specifications Expedite G301 OEM Module Specifications
VOL
GND
0.2V
VIH
2.3V
5.5V
VIL
GND
0.8V
BAUD RATE
9600
115200
Data Bits
Parity Check
Stop Bit
SECONDARY SERIAL PORT
VOH
3.0V
3.4V
VOL
GND
0.2V
VIH
2.3V
3.5V
VIL
GND
0.8V
BAUD RATE
9600
GPIO
VOH
3.0V
3.4V
VOL
GND
0.2V
VIH
2.3V
3.5V
VIL
GND
0.8V
Idrive
Input Impedance
4mA
TBD
Input Capacitance
9pF
SIM
As per ETSI 11.12
ADC Port
Voltage Range
500mV
6V
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
Resolution (10-bit)
33
5mV
Time Between Samples
TBD
Input Impedance
400 kOhm
Input Capacitance
Modem Off Impedance
6 pF
TBD
Analog Voice Port
Speaker
Max. Output Swing (differential)
1.56Vpp
Nominal Output Swing (differential)
1.0954 Vpp
Nominal Reference Level (differential)
Minimum Load Resistance RL (differential)
1.0954
15 Ohm
Max. Load Capacitance CL (differential)
100pF
Microphone
Max. Input Voltage Range
1.578Vpp
Nominal Reference Level
1.0954Vpp
Input PGA Gain
0 to 22.5dB
Input Resistance
124 kOhm
BUZZER
Max Output Swing
0.789 Vpp
Output Bias Voltage
Minimum Load Resistance
1.15V
1 kOhm
Maximum Load Capacitance
150pF
MANUAL RESET INPUT
VIH
2.3V
VIL
Pulse Width
0.8V
1uS
Glitch Rejection
Pull up value on Modem
100nS
32kOhm
63kOhm
P/N 90023363 Revision 1.9
100kOhm
34
Specifications Expedite G301 OEM Module Specifications
POWER UP AND WAKEUP
PUL_PWREN
VIH
0.7 * Vcc
VIL
0.3 *Vcc
PWR_ON
VIH
0.7 * Vcc
VIL
0.3 *Vcc
WAKEUP
VIH
1.5V
VIL
0.8V
SM_IND
VOH
3.0V
3.4V
VOL
GND
0.2V
VOH
3.0V
3.4V
VOL
GND
0.2V
TRANSMIT STATUS INDICATOR
Power-on and Wake-up Timing Characteristics
Table 16: Power-On and Wake-up Characteristics
Symbol
Parameter/Conditions
Min
Typ
Max
Units
TWAKEUP
Wake-up Pulse width from Sleep-mode
10
mS
TPOWERUP
Power-up Pulse width from Modem Power
Off
600
mS
TMODEMOFF
Modem Power Control to Modem Power Off
30
nS
TRDY_PWR
Modem Ready Signal Low to Power Off
uS
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
TRESET
Reset Pulse timing
35
TBD
mS
Will be reduced to <200ms.
PUL_PWRENb
tPOWERUP
PWRON
PWR_LATCH
(internal signal)
VCC_HOST
(internal power)
MDM RDY
Modem Initialized and Application Running
tMODEMOFF
Modem not on or Software Initializing
tRDY PWR
ATH4 Command
Issued
(De-registering
From Network)
Figure 4 Pulsed Power-on, ATH4 Command Shutdown
PUL PWREN
tPOWERUP
PWRON
PWR_LATCH
(internal
VCC_HOST
(internal
MDM RDY
Modem Initialized and Application Running
TMODEMOF
Modem not on or Software Initializing
* ATH4 Command Not Issued (Method Not Preferred)
Figure 5 ATH4 Command Not Issued (Method not Preferred)
P/N 90023363 Revision 1.9
36
Specifications Expedite G301 OEM Module Specifications
PUL_PWRENb
PWRON
PWR_LATCH
(internal signal)
tMODEMOFF
VCC_HOST
(internal
MDM_RDY
Modem Initialized and Application
(De-registering
From
Modem not on or Software Initializing
ATH4 Command
Issued
Figure 6 Power Enable-On, ATH4 Command Shutdown
PUL_PWRENb
PWRON
PWR_LATCH
(internal signal)
VCC_HOST
(internal power)
Modem Initialized and Application Running
tMODEMOFF
MDM_RDY
Modem not on or Software Initializing
* ATH4 Command Not Issued (Method Not Preferred)
Figure 7 Power Enable On, Power Enable Shutdown
Baseband Connector on Expedite
The following sections detail the baseband connector. All baseband connectors meet UL 94V0
flammability requirements.The specifics of the connector are provided below.
Revision 1.9 P/N 90023363
Specifications Expedite G301 OEM Module Specifications
37
Baseband Connector Part Numbers*
Novatel Part Number
21823060
CSC Part Number
CSC70P01RB-TR
SMK Part Number
CPB7270-1211
* For reference only – refer to approved parts list for current information. M Type,
“Plug”, appears visually as a female.
Baseband Mating Connector on the Host
The recommended mating connector is:
Novatel Part Number
21823061
CSC Part Number
CSC70S01RB-TR
SMK Part Number
CPB7170-0111
Baseband Connector Pin Numbering
Pin Numbering Convention - Plug
(MODULE CONNECTOR – TOP VIEW)
B35/70
B1/2
A36/69
A1/1
Pin Numbering Convention - Socket
(HOST CONNECTOR – TOP VIEW)
A35/69
A1/1
B35/70
B1/2
P/N 90023363 Revision 1.9
38
Specifications Air Interface
Antenna Port
The antenna port is an MMCX type coaxial connector with 50 ohm impedance.
Antenna Connector
The antenna connector is an MMCX type coaxial connector with 50 ohm impedance.
Novatel Part Number: 21723118
Vendor Part Number: Huber and Suhner – 82MMCX-S50-0-2 6506
Mating Antenna Connector
The mating antenna connector is the appropriate MMCX plug. An example is an AEP
8905-1521-003 connector with a RG316 cable.
Mounting Features
Two mounting holes are provided on the Expedite G301. The mounting holes are
compatible with M2 metric screws.
Double-sided adhesive tape can also be used as an option to mount the module.
However, the mechanical design is left up to the integrator to ensure that the mechanical
mounting and restraint is adequate for the application.
Air Interface
Table 17: Air Interface Data Rates
Coding
Scheme
Data Rates per Time Slot
(Kbps)
Maximum Data Rate (8
Time Slots)
CS1
9.05
72.4
CS2
13.4
107.2
CS3
15.6
124.8
CS4
21.4
171.2
Table 18: Radio Channel Frequency
Radio Channel Frequency
Bands
P-GSM 900
E-GSM 900
Channel
Tx
Rx
1 < n < 124
Freq(n)=890+0.2*n
Freq(n)=935+0.2*n
0 < n < 124
Freq(n)=890+0.2*n
Freq(n)=935+0.2*n
975 < n < 1023
Freq(n)=890+0.2*(n-1024)
Freq(n)=935+0.2*(n-1024)
Revision 1.9 P/N 90023363
Specifications Subscriber Identification Module (SIM)
39
DCS 1800
512 < n < 885
Freq(n)=1710.2+0.2*(n-512)
Freq(n)=1805.2+0.2*(n-512)
PCS 1900
512 < n < 810
Freq(n)=1850.2+0.2*(n-512)
Freq(n)=1930.2+0.2*(n-512)
Table 19: Radio Power Index
Radio Power Index
Bands
Index
Power
GSM 900
5-19
2dB incremental steps
PCS 1900/DCS 1800
0-15
2dB incremental steps
Table 20: PCS Gain Index
0 - 25
0 = min gain, 25 = max gain
Subscriber Identification Module (SIM)
Table 21: SIM Card Specifications
Physical Dimension and Weight
Size
Width: 25mm (1.0”)
Length: 15 mm (0.60”)
Thickness: 0.76mm (0.30”)
Mechanical: Storage, Transportation and Operational
Temperature
-25oC to 70oC
May exceed occasional peaks of up
to 85 o C.
Table 22: SIM Card Contacts
Contact
Number
Signal
Voltage
Used
Supply Voltage
2.7 to 3.3 VDC
Yes
Reset
0.0 to 3.0 VDC
Yes
Clock
0.0 to 3.0 VDC
Yes
No Connection
NC
No
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40
Specifications Modes of Operation
Ground
0.0
Yes
Programming VPP
NC or VCC
Yes
Data I/O
0.0 to 3.0 VDC
Yes
No Connection
NC
No
Modes of Operation
The following modes of operation are listed and described below:
•
Sleep
•
SMS Messaging
•
Circuit Switched
•
GPRS Data
•
Standby
Sleep
SLEEP mode provides the user with enhanced power savings by suspending unused
services while powering down other portions of the device. This power savings mode
occurs automatically and is transparent to the user. SLEEP mode can have a
considerable effect on the useful operating intervals between recharging. The modem
draws its power from the host thus affecting the host’s operational time.
SMS Messaging
SMS Messaging utilizes a very small portion of the data stream to send text-based
messages to units actively connected to the network. SMS Messages can be received in
either Standby, GPRS Data or Circuit switched modes. This feature provides a method of
sending text messages between network devices or other devices connected via the
Internet. SMS messages are limited to 160 bytes of data.
Circuit Switched
A circuit switched session is initiated through a dial command (user initiated) or an
answer command (remote initiated). In both cases the modem sets up and maintains a
continuous data connection between the modem and the remote. This connection is
maintained regardless of whether data is being sent or received. The session can be
terminated by the ATH command or through DTR control.
During a circuit switched session the modem will not enter sleep mode.
GPRS Data
The GPRS data connection provides the most cost effective and efficient way to send
data over a GSM Network. The modem can chain together multiple slots to increase its
throughput, the charges are applied only to the intervals when sending data thus the
Revision 1.9 P/N 90023363
Specifications Application Information
41
dead time, typical in a circuit switched call, are eliminated. The GPRS session is
originated by dialing a dialup number, at which time an IP address is assigned to the
modem.
Standby
When not in sleep mode or either of the data modes (Circuit switched or GPRS), the
modem will actively scan for channels, listening for paging information and maintaining its
connection with the network. Standby mode is automatically entered when the unit is
powered up and will be activated whenever the modem leaves a data mode. Periodically,
the modem must scan for channels, maintain its link with the network, or handoff from one
channel to another.
Application Information
Application information about using the Expedite G301 modem to embed GPRS data
capability into OEM products, please visit
http://www.nvtl.com/oem/index.html
Application notes can be obtained on-line at:
http://www.nvtl.com/pcproducts/g100.html
For integration assistance, please contact the Custom Engineering Solutions Group at
http://www.nvtl.com/prodserv/oem_custom.html
P/N 90023363 Revision 1.9
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Specifications Application Information
Revision 1.9 P/N 90023363
Chapter 3: AT
Commands
The ETSI specification created a complete set of commands to interface with the
terminal adapter or modem as well as specifying certain commands from ITU 25.
To make the AT Command interface easier to understand and provide faster
customer integration, a number of the standard AT Commands have been
implemented to substitute some of the more specialized ETSI commands. All
commands relevant to the control and operation of the modem have been
implemented.
This chapter will provide the following information:
• Merlin AT Commands listed by functions
• AT Command explanations, including a description, syntax, parameters,
response and an example. For more information please see “AT
Command Set by Name” on page 53.
• The prefix AT obtains synchronization, identifies the character
parameters, and indicates that a command may be in the following
characters.
• AT Commands are not case sensitive; use upper or lower case letters in
the command syntax.
The symbol represents an AT command’s terminating
character, used to send the AT command to the modem. By default,
this terminating character is set to the carriage return character
assigned to the “Enter” key on your keyboard.
Topics Included in this Chapter
AT Command Set by Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
AT Command Set by Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
CME ERROR Codes for GSM 07.07 Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
CMS Error Codes for GSM 07.05 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Merlin and Expedite
AT Commands allow communications software to control and direct the modem.
The term AT is derived from the word ATtention, meaning to get the modem’s
attention. AT Commands are issued by an intelligent device to a modem to
perform a specific function. For example, AT Commands can be used to initiate
a call, answer a call or to simply transmit data.
44
AT Commands
AT Command Set by Function
Table 4: Generic AT Commands below, lists by function, the generic AT Commands that
can be used with Merlin modems. The general format of the command line is:
.
This list does not include commands used for calibration.
Simply move the mouse over the command to link to a detailed explanation.
Table 4: Generic AT Commands
Generic
AT Command
A/
Reference ETSI 07.07,PCCA STD101
Response
Re-issues last AT command given
AGAIN
+++
ESC from Data mode to command mode
ESCAPE
ATA
Answer incoming call
ANSWER
ATD[][mgsm>]
Mobile Originated call to dial table number
DIAL
ATD[]
[]
Originate call to phone number in memory
DIAL FROM MEMORY
ATD[][]
Originate call to phone number in current memory
DIAL FROM LOCATION
ATD[][]
Originate call to phone number in memory which corresponds to alphanumeric field
DIAL USING STRING
Redial last telephone number used
DIAL LAST NUMBER
ATE
Set command echo mode
ECHO MODE
ATH
Disconnect existing connection
HANG-UP (DISCONNECT)
ATI
Display product identification information
DISPLAY IDENTITY
ATI0
Request IMEI (International Mobile Equipment Identifier)
number.
IMEI: 001018-00-565563-500 IMEI OK
ATL
Set monitor speaker loudness
SET SPEAKER LOUDNESS
ATM
Set monitor speaker mode
SET SPEAKER MODE
ATO
Switch from command mode to data mode
OPEN DATA MODE
ATDL
Revision 1.9 P/N 90023363
AT Commands
45
ATP
Select pulse dialing
SELECT PULSE MODE
ATQ
Set Result code presentation mode
SET RESULT FORMAT
ATS0
Set number of rings before automatically answering the
call
AUTO-ANSWER THRESHOLD
ATS2
Modem goes from off-line to on-line data state.
ESCAPRE CHARACTER
SELECTION
ATS3
Set command line termination character
COMMAND LINE TERMINATOR
ATS4
Set response formatting character
RESPONSE FORMATTING
CHARACTER
ATS5
Set command line editing character
COMMAND LINE EDITING
CHARACTER
ATS6
Set pause before blind dialing
PAUSE BEFORE DIALING
ATS7
Set number of seconds to wait for connection completion
CONNECTION TIMEOUT
ATS8
Set number of seconds to wait when comma dial modifier
used
COMMA CONNECTION
TIMEOUT
ATS10
Set disconnect delay after indicating the absence of data
carrier
DATA IDLE TIMEOUT
ATS12
The Escape sequence guard time selection register, SRegister 12, is not actively used and will report a “0” when
queried. Normally the guard time is used to discriminate
between valid and invalid occurrences of the escape
sequence.
ESCAPE SEQUENCE
GUARD SELECTION
ATT
Select tone dialing
SET TONE DIALING
ATV
Set result code format mode
SET RESULT CODE FORMAT MODE
ATX
Set connect result code format and call monitoring
SET CONNECT CODE AND
CALL MONITORING
ATZ
Set all current parameters to user defined profile
SET CONFIGURATION TO
USER DEFINED PROFILE
AT&C
Set DCD function mode
SET DCD MODE
AT&D
Set DTR function mode
SET DTR MODE
AT&F
Set all current parameters to manufacturer defaults
RESTORE FACTORY
DEFAULTS
AT&V
Display current configuration
DISPLAY CONFIGURATION
AT&W
Store current parameter to user defined profile
SAVE CONFIGURATION
AT+DR
V.42bis data compression reporting control
DATA COMPRESSION
REPORTING CONTROL
AT+DS
V.42bis data compression control
DATA COMPRESSION
CONTROL
Request complete TA capabilities list
CAPABILITES LIST
AT+GCAP
P/N 90023363 Revision 1.9
46
AT+GMI
AT Commands
Request manufacturer identification
MANUFACTURER IDENTIFICATION
AT+GMM
Request TA model identification
MODEL IDENTIFICATION
AT+GMR
Request TA revision identification
REVISION IDENTIFICATION
AT+GOI
Request global object identification
GLOBAL IDENTIFICATION
AT+GSN
Request TA serial number identification (IMEI)
SERIAL NUMBER IDENTIFICATION
AT+ICF
Set TE-TA control character framing
CONTROL CHARACTER
FRAMING
AT+IFC
Set TE-TA local data flow control
LOCAL DATA FLOW CONTROL
AT+IPR
Set fixed local rate
FIXED LOCAL RATE
Revision 1.9 P/N 90023363
AT Commands
47
Table 5: Call Control Features AT Commands below, lists by function, the AT Commands
specific to accessing and troubleshooting the call control features used on Merlin
modems.
This list does not include commands used for calibration.
Table 5: Call Control Features AT Commands
Call Control AT
Command
Reference ETSI 07.07
Response
AT+CACM
Accumulated call meter (ACM) reset of
query
ACCUMULATED CALL METER
AT+CAMM
Accumulated call meter maximum (acmmax) set or query
ACCUMULATED CALL METER
MAXIMUM
AT+CAOC
Advice of charge
ADVICE OF CHARGE
AT+CBST
Select bearer service type
BEARER SERVICE TYPE
AT+CCFC
Call forwarding number and conditions
control
CALL FORWARDING
AT+CCUG
Closed user group control
CLOSED USER GROUP
AT+CCWA
Call waiting control
CALL WAITING
AT+CEER
Extended error report
EXTENDED ERROR REPORT
AT+CGMI
Request manufacturer identification
MANUFACTURER IDENTIFICATION
AT+CGMM
Request model identification
MODEL IDENTIFICATION
AT+CGMR
Request revision identification
REVISION IDENTIFICATION
AT+CGSN
Request product serial number identification (identical with +gsn)
SERIAL NUMBER IDENTIFICATION
AT+CGOI
Global Identity Request
Identifier of device type.
AT+CSCS
Select TE character set
TE CHARACTER SET
AT+CSSN
Enables presentation of supplementary
service notification result codes
SUPPLEMENTARY SERVICE
NOTIFICATION
AT+CSTA
Select type of address
SELECT TYPE OF ADDRESS
AT+CHLD
Call hold and multiparty
CALL HOLD AND MULTIPARTY
Request international mobile subscriber
identityI
INTERNATIONAL MOBILE
SUBSCRIBER IDENTITY
AT+CIMI
P/N 90023363 Revision 1.9
48
AT Commands
AT+CLCC
List current calls of ME
LIST CURRENT CALLS
AT+CLCK
Facility lock
FACILITY LOCK
AT+CLIP
Calling line identification presentation
CALLING LINE IDENTIFICATION PRESENTATION
AT+CLIR
Calling line identification restriction
CALLING LINE IDENTIFICATION RESTRICTION
AT+CMEE
Report mobile equipment error
MOBILE EQUIPMENT ERROR
AT+COLP
Connected line identification presentation
CONNECTED LINE IDENTIFICATION PRESENTATION
AT+COPN
Read operator name
OPERATOR NAME
AT+COPS
Operator selection
OPERATOR SELECTION
AT+CPAS
Mobile equipment activity status
MOBIL EQUIPMENT ACTIVITY
STATUS
AT+CPBF
Find phone book entries
PHONEBOOK ENTRIES
AT+CPBR
Read current phone book entries
READ PHONEBOOK ENTRIES
AT+CPBS
Select phone book memory storage
PHONEBOOK MEMORY
STORAGE
AT+CPBW
Write phone book entry
WRITE PHONEBOOK ENTRY
Enter PIN
ENTER PIN
Change password
CHANGE PASSWORD
Service reporting control
SERVICE REPORTING
Set cellular result codes for incoming call
indication
CELLULAR RESULT CODES
AT+CREG
Network registration
NETWORK REGISTRATION
AT+CRLP
Select radio link protocol parameter for
original non-transparent data call
RADIO LINK PROTOCOL
Signal quality report
SIGNAL QUALITY
Fax: Select, Read or Test Service Class
FAX CLASS
Fax: Report Manufactured ID
FAX MANUFACTURER ID
AT+FMM
Fax: Report Model ID
FAX MODEL ID
AT+FMR
Fax: Report Revision ID
FAX REVISION ID
AT+VTD
Tone durationD
TMF DURATION
AT+VTS
DTMF and tone generation ( in {09, *, #, a, b, c, d})
DTMF SIGNAL
AT+CUSD
Unstructured supplementary service data
UNSTRUCTURED SUPPLEMENTARY SERVICE DATA
AT+CPIN
AT+CPWD
AT+CR
AT+CRC
AT+CSQ
AT+FCLASS
AT+FMI
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AT+CPOL
Preferred operator list
PREFERRED OPERATOR
LIST
AT+CNUM
Subscriber number
SUBSCRIBER NUMBER
AT+CMUT
Mute control
MUTE
AT+CLVL
Loudspeaker volume
SPEAKER VOLUME
AT+CFUN
Set phone functionality
PHONE FUNCTIONALITY
AT+CMUX
Multiplexor control
MULTIPLEXOR CONTROL
AT+CSIM
Generic sim access
GENERIC SIM ACCESS
AT+CBC
Battery charge
BATTERY CHARGE
Clock
CLOCK
AT+CALM
Alert sound mode
ALERT SOUND MODE
AT+CRSL
Ringer sound level
RINGER SOUND LEVEL
AT+CPUC
Price per unit currency table
PRICE PER UNIT CURRENCY
AT+CCWE
Call meter maximum event
CALL METER MAXIMUM
EVENT
(not enabled)
(not fully
supported)
AT+CCLK
(not supported)
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AT Commands
Table 6: SMS Specific At Commands below, lists by function, the AT Commands specific to
accessing and troubleshooting the SMS feature used on Merlin modems.
This list does not include commands used for calibration.
Table 6: SMS Specific At Commands
SMS
AT Command
Reference ETSI 07.05
Response
AT+CMGD
Delete sms message
DELETE SMS MESSAGE
AT+CMGF
Select sms message formatT
SMS MESSAGE FORMA
AT+CMGL
List sms messages from preferred store
LIST SMS MESSAGES FROM
PREFERRED STORE
AT+CMGR
Read SMS message
READ SMS MESSAGE
AT+CMGW
Write SMS message to memory
WRITE SMS MESSAGE TO
MEMORY
AT+CMSS
Send SMS message from storage
SEND SMS MESSAGE FROM
STORAGE
AT+CNMI
New SMS message indications
NEW SMS MESSAGE INDICATIONS
AT+CPMS
Preferred SMS message storage
PREFERRED SMS MESSAGE STORAGE
AT+CRES
Restore SMS settings
RESTORE SMS SETTINGS
AT+CSAS
Save SMS settings
SAVE SMS SETTINGS
AT+CSCA
Sms service center address
SMS SERVICE CENTER
ADDRESS
AT+CSCB
Select cell broadcast SMS messages
SELECT CELL BROADCAST
SMS MESSAGES
AT+CSDH
Show SMS text mode parameters
SHOW SMS TEXT MODE
PARAMETERS
AT+CSMP
Set SMS text mode parameters
SET SMS TEXT MODE
PARAMETERS
AT+CSMS
Select message service
SELECT MESSAGE SERVICE
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Table 7: GPRS Specific AT Commands below, lists by function, the AT Commands specific
to accessing and troubleshooting the issues specific to GPRS communications.
This list does not include commands used for calibration.
Table 7: GPRS Specific AT Commands
GPRS
AT Command
Reference ETSI 07.07
AT+CGDCONT
Define PDP context
PDP CONTEXT DEFINITION
AT+CGQREQ
Quality of service profile (requested)
REQUEST QOS PROFILE
AT+CGQMIN
Quality of service profile (minimum acceptable)
QUALITY OF SERVICE PROFILE
AT+CGACT
Context activation
PDP CONTEXT CONTROL
AT+CGATT
GPRS attach or detach
GPRS ATTACH OR DEATTACH
AT+CGPADDR
Show PDP address
SHOW PDP ADDRESS
AT+CGCLASS
GPRS mobile station class
GPRS MOBILE STATION
CLASS
Control unsolicited GPRS event reporting
UNSOLICITED EVENT
REPORTING CTRL
AT+CGREG
Network registration status
REGISTRATION STATUS
AT+CGSMS
Select service for MO SMS messages
SERVICE FOR MO SMS
MSG’S
AT+CGEREP
Response
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AT Commands
Table 8: Novatel Wireless Specific AT Commands below, lists by function, the AT
Commands specific to accessing and troubleshooting the issues specific to TTP
communications.
This list does not include commands used for calibration.
Table 8: Novatel Wireless Specific AT Commands
Novatel
Wireless
AT Command
AT+CLTS
Reference ETSI 07.07
Response
Get local timestamp
LOCAL TIMESTAMP
External headset control
EXTERNAL HEADSET
External headset button unsolicited result code reporting
EXTERNAL HEADSET BUTTON
AT+CSMINS
Unsolicited sim removal/insertion result code reporting
SIM REMOVAL/INSERTION
ALERT
AT+CLDTMF
Local DTMF generationL
OCAL DTMF GENERATION
AT+CDRIND
Unsolicited indication of a call drop or GPRS context termination
CALL DROP INDICATION
AT+CEXTHS
AT+CEXTBUT
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AT Command Set by Name
Each of the following sections discusses an individual AT command and its five
subsections listed below:
Description:
describes the command and defines any conditions required to use the
command
Syntax:
lists the syntax the command requires
Parameters:
lists any parameters and values available to the command
Response:
lists and defines any responses the command may return
Example:
(optional) provides examples of the command
A/
Description:
REPEAT LAST COMMAND
This command repeats the last command sent to the modem.
Syntax:
A/
Parameters:
None
Response:
Returns the command response from the previous command.
Example:
AT12
Novatel Wireless, Inc.
OK
A/
Novatel Wireless, Inc.
OK
+++
Description:
ESCAPE SEQUENCE
This command is used to change the modem from data mode to command
mode. This command is not a Hayes-compatible command as the guard
time interval is not required. It is a public domain method (TIES) and is
only enabled with define VG_TIES_ESC_SEQUENCE.
If the modem receives the characters +++AT followed by a carriage return
() within a 0.5 second time span, the modem interrupts the data flow
on the AT command interface, switches to command mode and interprets
all characters received before the next command line termination
character as commands.
This command can only be issued in data mode.
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AT Commands
This command is not a Hayes-compatible command. It is a public domain
method (TIES) and is only enabled with define
VG_TIES_ESC_SEQUENCE.
Syntax:
+++
Parameters:
None
Response:
This command will return the string OK.
Example:
+++AT
ATA
Description:
ANSWER
This command sets the modem to answer the next call. The modem
sends an off-hook signal to the remote station. Any additional commands
on the same command line are ignored. The modem switches to data
mode and after call is released, returns to command mode.
This command can be stopped by receiving a character during execution,
except during some states of connection establishment such as
handshaking.
Syntax:
ATA
Parameters:
None
Response:
If the connection is successful the modem will return the string:
CONNECT
then switches to data mode. The is only displayed if the command
ATX has been set to a value greater than 0.
When the modem releases the call and returns to command mode, it
returns the string:
OK
If no connection is made, the modem will return the string:
NO CARRIER
Example:
ATA
ATD[][mgsm>]
Description:
DIAL NUMBER
This command will instruct the modem to originate a call to a dialable number.
The modem attempts to set up an outgoing call.
This command can be stopped by receiving a character during execution,
except during some states of connection establishment such as
handshaking.
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55
ATD[][]
Parameters:
is the string of dialing digits and the optional V.25ter modifiers. The
valid dialing digits are:
0-9, * , #, +, A, B, C
and the V.25ter modifiers which are ignored:
mgsm
Response:
is a string of GSM modifiers, where:
is overrides the current Calling Line Identification Restriction
(CLIR) setting for the call
G,g
displays the Closed User Group (CUG) information, set with
the command +CCUG
signifies the call is a voice call and instructs the modem to
return to the command mode.
If there is no dial tone, the modem will return the string:
NO DIALTONE
where the command ATX has been set to 2 or 4.
If there is an error and it is related to the mobile equipment’s (ME)
functionality, the modem will return the string:
+CME ERROR:
If the connection is busy, the modem will return the string:
BUSY
where the command ATX has been set to 3 or 4.
If the connection cannot be established, the modem will return the string:
NO CARRIER
If the connection is successful and is non-voice call, the modem switches
to data state and the modem will return the string:
CONNECT
where is only displayed if the command ATX has been set to a value
greater than 0.
If connection successful and is a voice call, the modem will return the
string:
OK
When the modem releases the call and returns to command mode, it
returns the string:
OK
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AT Commands
Example:
ATD9,555-1212
DIAL 9, PAUSE, DIAL 5551212
ATD555-1234;
DIAL 5551234
ATD555-09871G
DIAL 5550987, OVERRIDE CLIR, DISPLAY CUG
ATD[][]
Description:
DIAL NUMBER FROM SIM PHONE BOOK MEMORY
This command will instruct the modem to originate a call to a dialable
number using reference to a number stored in the SIM’s phone book
memories.
Syntax:
ATD[][]
Parameters:
mem is the phone book at the designated memory location. There is no
for emergency calls (EN). It is comprised of the following
phone book parameters:
loc
FD
SIM fix phone-phone book
LD
SIM last-phone-phone book
DC
Mobile Equipment (ME) dialed calls list
ON
SIM (or ME) own numbers (MSISDNs) list
SM
SIM phone book
is an integer referring to a memory location that is in a range of
locations available in the phone book referenced. This must be
used with the mem parameter.
mgsm is a string of GSM modifiers, where:
is overrides the current Calling Line Identification Restriction
(CLIR) setting for the call
G,g
displays the Closed User Group (CUG) information, set with
the command +CCUG
Response:
signifies the call is a voice call and instructs the modem to
return to the command mode.
If there is no dial tone, the modem will return the string:
NO DIALTONE
where the command ATX has been set to 2 or 4.
If there is an error and it is related to the mobile equipment’s (ME)
functionality, the modem will return the string:
+CME ERROR:
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If the connection is busy, the modem will return the string:
BUSY
where the command ATX has been set to 3 or 4.
If the connection cannot be established, the modem will return the string:
NO CARRIER
If the connection is successful and is non-voice call, the modem switches
to data state and the modem will return the string:
CONNECT
where is only displayed if the command ATX has been set to a value
greater than 0.
If connection successful and is a voice call, the modem will return the
string:
OK
When the modem releases the call and returns to command mode, it
returns the string:
OK
Example:
ATDFD1
DATA CALL TO FD PHONE BOOK ENTRY
ATDLD3
DATA CALL TO LD PHONE BOOK ENTRY
ATDDC2I;
VOICE CALL TO DC PHONE BOOK ENTRY 2 NO CLIR
ATD[][]
Description:
DIAL NUMBER FROM INTERNAL MEMORY
This command will instruct the modem to originate a call to a dialable
number
Syntax:
ATD[][]
Parameters:
ploc
is an integer referring to a mobile equipment phone number
stored at the specified location in the modem’s internal
memory.
mgsm
is a string of GSM modifiers, where:
overrides the current Calling Line Identification
Restriction (CLIR) setting for the call
G,g
displays the Closed User Group (CUG) information, set
with the command +CCUG
signifies the call is a voice call and instructs the modem
to return to the command mode.
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Response:
AT Commands
If there is no dial tone, the modem will return the string:
NO DIALTONE
where the command ATX has been set to 2 or 4.
If there is an error and it is related to the mobile equipment’s (ME)
functionality, the modem will return the string:
+CME ERROR:
If the connection is busy, the modem will return the string:
BUSY
where the command ATX has been set to 3 or 4.
If the connection cannot be established, the modem will return the string:
NO CARRIER
If the connection is successful and is non-voice call, the modem switches
to data state and the modem will return the string:
CONNECT
where is only displayed if the command ATX has been set to a value
greater than 0.
If connection successful and is a voice call, the modem will return the
string:
OK
When the modem releases the call and returns to command mode, it
returns the string:
OK
Example:
ATD2
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ATD[][]
Description:
DIAL NUMBR FROM NAME SEARCH
This command will instruct the modem to originate a call to a dialable
number.
Syntax:
ATD[][]
Parameters:
str
is a string that is searched for in the alphanumeric fields of
the phone books, located in all available memory types (i.e.
SIM, Mobile Equipment Phone Book, etc.).
mgsm
Response:
is a string of GSM modifiers, where:
is overrides the current Calling Line Identification
Restriction (CLIR) setting for the call
G,g
displays the Closed User Group (CUG) information, set
with the command +CCUG
signifies the call is a voice call and instructs the modem
to return to the command mode.
If there is no dial tone, the modem will return the string:
NO DIALTONE
where the command ATX has been set to 2 or 4.
If there is an error and it is related to the mobile equipment’s (ME)
functionality, the modem will return the string:
+CME ERROR:
If the connection is busy, the modem will return the string:
BUSY
where the command ATX has been set to 3 or 4.
If the connection cannot be established, the modem will return the string:
NO CARRIER
If the connection is successful and is non-voice call, the modem switches
to data state and the modem will return the string:
CONNECT
where is only displayed if the command ATX has been set to a value
greater than 0.
If connection successful and is a voice call, the modem will return the
string:
OK
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AT Commands
When the modem releases the call and returns to command mode, it
returns the string:
OK
Example:
ATDBobR
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ATDL
Description:
DIAL LAST NUMBER
This command will instruct the modem to originate a call to the last
telephone number used by the modem. The modem attempts to set up an
outgoing call.
This command can be stopped by receiving a character during execution,
except during some states of connection establishment such as
handshaking.
Syntax:
ATDL[;]
Parameters:
;which signifies the call is a voice call and instructs the modem to return to
the command mode.
Response:
If there is no dial tone, the modem will return the string:
NO DIALTONE
where the command ATX has been set to 2 or 4.
If there is no last number to dial or the number is invalid, the modem will
return the string:
+CME ERROR:
If the connection is busy, the modem will return the string:
BUSY
where the command ATX has been set to 3 or 4.
If the connection cannot be established, the modem will return the string:
NO CARRIER
If the connection is successful and is non-voice call, the modem switches
to data state and the modem will return the string:
CONNECT
where is only displayed if the command ATX has been set to a value
greater than 0.
If connection successful and is a voice call, the modem will return the
string:
OK
When the modem releases the call and returns to command mode, it
returns the string:
OK
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Example:
AT Commands
Input
Response
ATDL
Connect (Data Call)
ATDL;
(No signal given as this is a voice call)
ATE
Description:
ECHO MODE
This command sets the echo mode of the modem, that is, whether or not
the modem echoes characters received from terminal while the modem is
in command mode.
Syntax:
ATE[]
Parameters:
n = 0 or 1
turns echo mode off
turns echo mode on
Response:
This command will return the string OK.
Example:
ATE1 All further data entered is ecohed
OK
ATE0 All further data entered is ecohed
OK
ATH
Description:
HANG-UP (DISCONNECT)
This command instructs the modem to disconnect from the current
connection and terminate the call.
Syntax:
ATH[0]
Parameters:
0 This parameter is the default, as well as the only parameter, and does not
necessarily have to be typed with the command.
Response:
This command will return the string OK, after the Data Carrier Detect
(DCD) is turned off, if it was previously on.
Example:
ATH OK
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ATI
Description:
MANUFACTURING IDENTITY
This command will instruct the modem to display the informational text,
contained in the modem’s firmware, such as the manufacturer’s name.
Syntax:
ATI or ATI5
Parameters:
None
Response:
This command will return information on its manufacturer. For
example:
Novatel Wireless, Inc.
GPRS PC Card 56600
Software Version: PN160-0300
Date: May 23 2001, Time: 14:17:39
Example:
ATI
Novatel Wireless, Inc.
GPRS PC Card 56600
Software Version: PN160-0300
Date: May 23 2001, Time: 14:17:39
OK
ATI0
Description:
IMIE IDENTITY
Request IMEI (International Mobile Equipment Identifier) number.
Syntax:
ATI0
Parameters:
None
Response:
IMEI:
Example:
ATI0
001018-00-565563-5-00
IMEI OK
ATL
Description:
SET SPEAKER LOUDNESS
This command will set the modem’s speaker circuit volume. When the
modem is installed in a computer, it will use the computer’s default
speaker.
This command is ignored when the modem is connected to a GSM network.
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AT Commands
Syntax:
ATL[]
Parameters:
0, 1, 2, 3
where:
sets the speaker volume to very low
sets the speaker volume to low
sets the speaker volume to medium
sets the speaker volume to high
Response:
This command will return the string OK.
Example:
ATL3
ATM
Description:
ENABLE MODEM SPEAKER
This command turns the modem’s speaker circuit on or off. When the
modem is installed in a computer, it will use the computer’s default
speaker.
This command is ignored when the modem is connected to a GSM
network.
Syntax:
ATM[]
Parameters:
0, 1, 2
where:
turns the speaker off
turns the speaker on until the modem informs the terminating
equipment that a carrier has been detected
turns the speaker on while the modem is off-hook
Response:
OK
Example:
ATM1 OK
ATO
Description:
OPEN DATA MODE
This command switches the modem from command mode to data mode.
This command is generally used to return the modem to data mode after
the user has issued the command +++AT and worked in the modem’s
command mode.
Syntax:
ATO[0]
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Parameters:
This parameter is the default, as well as the only parameter, and does
not necessarily have to be typed with the command.
Response:
If connection is not successfully resumed, the modem will return the
string:
NO CARRIER
If connection is successfully resumed, the modem will return the string:
CONNECT
where is only displayed if the command ATX has been set to a value
greater than 0.
Example:
ATO
ATP
Description:
PULSE DIAL MODE
This command is used to instruct the modem to dial the next telephone
number using pulse dialing. This command is a legacy command and is
ignored when the modem is connected to a GSM network.
Syntax:
ATP
Parameters:
None
Response:
This command will return the string OK.
Example:
ATP
ATQ
Description:
QUIET MODE
This command is used to specify whether or not the modem will sent
result codes to the terminating equipment. Text sent from the modem to
the terminating equipment using the ATI command will not be affected.
Syntax:
ATQ[]
Parameters:
0, 1
instructs the modem to send the result codes; this is the default.
instructs the modem to suppress the result codes and not transmit
them to the terminating equipment.
Response:
If this command has been set to 0, the modem’s response will be OK.
If this command has been set to 1, there will be no response from the
modem.
Example:
ATQ0
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AT Commands
ATS0
Description:
LISTEN MODE
This command sets the number of rings the modem will wait before it will
answer the incoming call. This command sets the modem’s S-register 0.
Syntax:
ATS0[=][?]
Parameters:
=, ?
Response:
is a number between 1 and 255 that represents the number of rings
the modem will wait before answering the incoming call. This
command sets the S-register 0 to the number specified in . If
this command is set to 0, the modem will never answer the incoming
call.
will query the S-register and return the register’s current value
If the user has typed the command ATS0?, the modem will return the
current value of the register and the string OK. For example:
OK
If the user has typed the command ATS0=, the modem will only return
the string OK.
Example:
ATS0=5 answer after 5 rings
OK
ATS2
Description:
ESCAPE CHARACTER SELECTION
The escape sequence consists of three repetitions of the escape code
character, defined by S-Register 2 (default value: decimal 43(+)). The
escape sequence causes the modem to go to the off-line command state
from the on-line data state. After this escape sequence, the modem can
accept user's AT Commands.
Syntax:
ATS2=
Parameters:
is the decimal value of the ASCII character used as the “escape”
character
Response:
OK
Example:
ATS2=43
OK
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ATS3
Description:
COMMAND TERMINATION CHARACTER
This command sets the character that will be used as the command line
termination character. The terminating character may be changed using
this command. This command sets the modem’s S-register 3.
Syntax:
ATS3[=][?]
Parameters:
=, ?
= is the ASCII code number that represents the character to be used
as the command line termination character. This command sets Sregister 3 to the number specified in . The valid values for this
parameter range from 0 to 127 and the default for this S-register is
13, which is the carriage return character.
Response:
will query the S-register and return the register’s current value.
If the user has typed the command ATS3?, the modem will return the
current value of the register and the string OK. For example:
13
OK
If you the user has typed the command ATS3=, the modem will only
return the string OK.
Example:
ATS3=23
ATS3?
ATS4
Description:
EOL CHARACTER SELECTION
This command sets the character that will be used as the modem’s
response string end-of-line character. This command sets the modem’s Sregister 4.
Syntax:
ATS4[=][?]
Parameters:
=, ?
where:
= is the ASCII code number that represents the character to be used
as the modem’s response string end-of-line character. This
command sets S-register 4 to the number specified in . The valid
values for this parameter range from 0 to 127 and the default for this
S-register is 10, which is the line feed character.
will query the S-register and return the register’s current value.
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Response:
AT Commands
If the user has typed the command ATS4?, the modem will return the
current value of the register and the string OK. For example:
10
OK
If the user has typed the command ATS4=, the modem will only return
the string OK.
Example:
ATS4=32
ATS4?
ATS5
Description:
BACKSPACE CHARACTER
This command sets the character that will be used by the command line
as the backspace character; when the command line receives this
character, it will erase the character immediately preceding the cursor.
This command sets the modem’s S-register 5.
Syntax:
ATS5[=][?]
Parameters:
=, ?
= is the ASCII code number that represents the character to be used
as the backspace character. This command sets S-register 5 to the
number specified in . The valid values for this parameter range
from 0 to 127 and the default for this S-register is 8, which is the
backspace character assigned to the Backspace key on your
keyboard.
Response:
will query the S-register and return the register’s current value.
If the user has typed the command ATS5?, the modem will return the
current value of the register and the string OK. For example:
OK
If the user has typed the command ATS5=, the modem will only return
the string OK.
Example:
ATS5=110
ATS5?
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ATS6
Description:
CONNECTION HOLD OFF TIMER
This command sets the number of seconds the modem will wait before it
will begin blind dialing (dialing without checking for a dial tone). This
command sets the modem’s S-register 6.
This command is ignored when the modem is connected to a GSM network.
Syntax:
ATS6[=][?]
Parameters:
=, ?
= is a number between 0 and 255 that represents the number of
seconds the modem will wait before blind dialing an outbound call.
This command sets S-register 6 to the number specified in . The
default value for this register is 2.
Response:
will query the S-register and return the register’s current value.
If the user has typed the command ATS6?, the modem will return the
current value of the register and the string OK. For example:
OK
If the user has typed the command ATS6=, the modem will only return
the string OK.
Example:
ATS6=4
ATS7
Description:
CONNECTION TIMEOUT
This command sets the number of seconds the modem will wait for the
connection to complete during an inbound or outgoing call, before it stops
attempting to connect. This command sets the modem’s S-register 7.
Syntax:
ATS7[=][?]
Parameters:
=, ?
= is a number between 0 and 255 that represents the number of
seconds the modem will wait before stopping the connection
attempt. This command sets S-register 7 to the number specified in
. The default value for this register is 60.
will query the S-register and return the register’s current value.
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Response:
AT Commands
If the user has typed the command ATS7?, the modem will return the
current value of the register and the string OK. For example:
OK
If the user has typed the command ATS7=, the modem will only return
the string OK.
Example:
ATS7=4
ATS8
Description:
COMMA DIAL MODIFIER
This command sets the value of the comma dial modifier, in seconds.
The comma dial modifier is placed in-between the digits of the telephone
number you wish to call to provide a pause. This might be used when
dialing 9 to get an outside telephone line. This command sets the
modem’s S-register 8.
This command is ignored when the modem is connected to a GSM
network.
Syntax:
ATS8[=][?]
Parameters:
=, ?
= is a number between 1 and 255 that represents the number of
seconds the modem will wait to dial the remaining digits in the
telephone number. This command sets S-register 8 to the number
specified in . If this command is set to 0, the there will be no
pause when the comma (,) is encountered. The default is set to 2.
Response:
will query the S-register and return the register’s current value.
If the user has typed the command ATS8?, the modem will return the
current value of the register and the string OK. For example:
OK
If the user has typed the command ATS8=, the modem will only return
the string OK.
Example:
ATS8=2
ATS10
Description:
DATA CARRIER TIMEOUT
This command sets the amount of time, in 1 / 10 th secs, the modem will
wait before returning on-hook, if it can no longer detect the data carrier.
This command sets the modem’s S-register 10.
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Syntax:
ATS10[=][?]
Parameters:
=, ?
= is a number between 1 and 255 that represents the number in 1 / 10 th
secs the modem will wait before going on-hook, if it no longer
detects a data carrier. This command sets S-register 10 to the
number specified in . The default value for this register is 15.
Response:
will query the S-register and return the register’s current value.
If the user has typed the command ATS10?, the modem will return the
current value of the register and the string OK. For example:
25
OK
If the user has typed the command ATS10=, the modem will only return
the string OK.
Example:
ATS10=25
ATS12
Description:
ESCAPE SEQUENCE GUARD SELECTION
The Escape sequence guard time selection register, S-Register 12, is not
actively used and will report a “0” when queried. Normally the guard time
is used to discriminate between valid and invalid occurrences of the
escape sequence. The duration between escape codes must also be
within the guard time. After the modem recognizes a valid escape
sequence, an "OK" result code is returned. If an escape sequence is
valid, the modem will exit data mode and enter command mode. The ATO
command is used to go back to on-line data state.
Syntax:
ATS12=
Parameters:
Response:
OK
Example:
ATS12=10
Regardless of the value entered, 0 will always be used.
ATT
Description:
TONE DIALING
This command is used to instruct the modem to dial the next telephone
number using tone dialing. This command is a legacy command and is
ignored when the modem is connected to a GSM network.
Syntax:
ATT
Parameters:
None
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Response:
This command will return the string OK.
Example:
ATT OK
ATV
Description:
VERBOSE
This command displays the modem’s result codes in terse or verbose
form.
In terse form, all result codes are represented by an error code number
and all text messages have only a carriage return () character
appended to them.
In verbose form, all result codes are returned as words or sentences and
all text messages have a carriage return-line feed () character
pair before and after the text message.
Syntax:
ATV[]
Parameters:
0, 1
0 will set the response format to terse
1 will set the response format to verbose
Response:
If the command has been set to 0, it will return the response:
If the command has been set to 1, it will return the response:
OK
Example:
ATV=1 OK
ATX
Description:
ACCESS CONTROL
This command will specify whether or not the modem will attempt to
detect a dial tone and busy signal, and what type of result code is
returned.
Syntax:
ATX[]
Parameters:
0, 1, 2, 3, 4
where:
will set the modem to not detect the dial tone or the busy signal and
return the result code CONNECT.
will set the modem to not detect the dial tone or the busy signal and
return the result code CONNECT.
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will set the modem to detect the dial tone, but not the busy signal. It will
also return the result code CONNECT.
will set the modem not to detect the dial tone, but detect the busy
signal. It will also return the result code CONNECT.
will set the modem to detect both the dial tone and the busy signal and
return the result code CONNECT.
Response:
This command will return the string OK.
Example:
ATX4
ATZ
Description:
RESET PARAMETERS TO SAVED SETTINGS
This command uses the user-defined modem settings profile stored in the
non-volatile memory as the active profile. If the user-defined profile is
invalid, the modem will use the factory default settings. Any additional
commands on the same command line are ignored. This command uses
the profile created by the AT&W command.
Syntax:
ATZ[0]
Parameters:
0 This parameter is the default, as well as the only parameter, and
does not necessarily have to be typed with the command.
Response:
This command will return the string OK.
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AT&C
Description:
DATA CARRIER DETECT (DCD) MODE
This command sets the data carrier detect mode.
Syntax:
AT&C[]
Parameters:
0, 1
sets the data carrier detect so it is always on
sets the data carrier detect so it is only on in the presence of a data carrier
Response:
This command will return the string OK.
Example:
AT&C1
AT&D
Description:
DATA TERMINAL READY (DTR) CONTROL
This command defines how the modem responds, while in data mode, to
the data terminal ready (DTR) circuit changing state from ON to OFF.
Syntax:
AT&D[]
Parameters:
0, 1, 2
0 instructs the modem to ignore the data terminal ready state
1 instructs the modem to change to command mode, while remaining
connected to the call
2 instructs the modem to disconnect from the call and then change to
command mode. While the data terminal ready state is set to off, the
modem’s auto-answer function is also off.
Response:
This command will return the string OK.
Example:
AT&D2
AT&F
Description:
RESTORE FACTORY DEFAULT SETTINGS
This command will return all the modem settings to their factory default
setting.
Syntax:
AT&F[0]
Parameters:
0 This parameter is the default, as well as the only parameter, and
does not necessarily have to be typed with the command.
Response:
helloOK
Example:
AT&F0
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AT&V
Description:
VIEW ACTIVE PROFILE
This command will display the active profile settings on the terminating
equipment.
Syntax:
AT&V[0]
Parameters:
0 This parameter is the default, as well as the only parameter, and
does not necessarily have to be typed with the command.
Response:
The response will be a listing of the current configuration followed by
the string OK. For example
ACTIVE PROFILE :
E1 L1 M1 Q0 V1 X4 &C1 &D2
S0:0 S2:43 S3:13 S4:10 S5:8 S6:2 S7:60 S8:2 S10:15 S12:
+CBST: 7,0,1
+CSMS: 0
+CRLP: 61,61,48,6,0,3
+CRC: 0
+CR: 0
+FCLASS: 0
+IFC: 2,2
+IMODE: 0
+ICF: 3,3
+DR: 0
+CMGF: 0
+CSDH: 0
+CNMI: 2,1,0,0,0
+ILRR: 0
+IPR: 115200
+DS: 3,0,512,20
+CMEE: 0
+CREG: 0
+CCUG: 0,0,0
+CLIP: 0
+COLP: 0
+CCWA: 0
+CAOC: 1
+CLIR: 0
+CSCA: "+44385016005",145
+CSMP: 17,167
OK
Example:
AT&V
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AT&W
Description:
SAVE MODEM PROFILE (SETTINGS)
This command stores the active modem settings profile in the modem’s
non-volatile memory. This stored profile can later be retrieved using the
ATZ command.
Syntax:
AT&W[0]
Parameters:
None
Response:
This command will return the string OK.
Example:
AT&W0
AT+CACM
Description:
ACCUMULATED CALL METER (RESET OR QUERY)
This command reads or resets the Advice of Charge related accumulated
call meter (ACM) value in SIM file EF(ACM). ACM contains the total
number of home units for both the current and preceding calls.
Syntax:
AT+CACM=[] (Reset)
Parameters:
passwd SIM PIN2
Response:
string type; three bytes of the current ACM value in
hexadecimal format (e.g. "00001E" indicates decimal value 30)
Example:
Input
Response
Query
AT+CACM?
00037F
Reset
AT+CACM=opensesame
OK
Test
AT+CACM=?
OK
AT+CALM
Description:
ALERT SOUND MODE
This command sets the sound actions to to alert the user. This can be
used to enable or disable the sound utilized to alert the user. Available in
Command mode only.
Syntax:
AT+CALM=
Parameters:
0 Normal Mode
Response:
normal mode
silent mode (all sounds from ME are prevented)
OK
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Example:
Query
+CALM: +CME ERROR:
Test
+CALM: (list of supported s)+CME ERROR:
AT+CAMM
Description:
ACCUMULATED CALL METER MAXIMUM
This command sets the Advice of Charge related accumulated call meter
maximum value in SIM file EF(ACMmax). ACMmax contains the maximum
number of home units allowed to be consumed by the subscriber.
Syntax:
AT+CAMM=[[,]]
Parameters:
ACMMAX
string type; three bytes, 000001-FFFFFF, of the max. ACM
value in hexa-decimal format (e.g. "00001E" indicates
decimal value 30). A value of 000000 will disable
ACMmax feature.
PASSWD
SIM PIN2
Example:
Input
Response
Query
AT+CAMM?
00037F
Set
AT+CAMM=000400
OK
Test
AT+CAMM=?
OK
AT+CAOC
Description:
ADVICE OF CHANGE
This command, when active, sends an unsolicited result code when the
current call meter (CCM) value changes, this will not be reported more
than once every 10 secs.
Syntax:
AT+CAOC=
Parameters:
0, 1
Example:
query CCM value
deactivate the unsolicited reporting of CCM value
activate the unsolicited reporting of CCM value
Input
Response
Query
AT+CAOC?
Current mode OK
Set
AT+CAOC=1
OK
Test
AT+CAOC=?
List of possible selectIons
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AT+CBC
Description:
BATTERY CHARGE STATUS INDICATION
This command is used to indicate battery charge status.
Syntax:
AT+CBC
Parameters:
None
Response:
battery connection status
ME is powered by the battery
ME has a battery connected, but is not
powered by it
ME does not have a battery connected
Recognized power fault, calls inhibited
battery connection level
battery is exhausted, or ME does not have a
battery connected
1..100 battery has 1 to 100 % of capacity remaining
Example:
Test Response: +CBC: (list of supported s),(list of supported
s)
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AT+CBST
Description:
Bearer Service Type
This command selects the bearer service with data rate ,
and the connection element to be used when data calls are
originated.
Syntax:
AT+CBST=[] [,[,]]]
Parameters:
autobalancing
300 bps (V.21)
1200 bps(V.22)
1200/75 bps (V.23)
2400 bps (V22bis)
2400 bps(V.26ter)
4800 bps(V.32)
9600 bps (V.32)
12
9600 bps (V.34)
14
14400 bps (V.34)
65
300 bps (V.110)
66
1200 bps (V.110 or X.31 flag stuffing)
68
2400 bps (V.110 or X.31 flag stuffing)
70
4800 bps (V.110 or X.31 flag stuffing)
71
9600 bps (V.110 or X.31 flag stuffing)
75
14400 bps (V.110 or X.31 flag stuffing)
asynchronous modem
PAD access (asynchronous)
transparent
non-transparent
Example:
Query
Response
Query
AT+CBST?
Current mode OK
Set
AT+CBST=7,2,0
OK
Test
AT+CBST=?
List of possible selectIon
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AT+CCFC
Description:
CALL FORWARD
This command controls the call forwarding supplementary service.
Registration, erasure, activation, deactivation, and status query are
supported. Only and should be entered with mode (02,4).
Syntax:
AT+CCFC = , [, [, [, [,
[, [,