Qualcomm GSP-1620 5

80-99208-1 Rev. D 5-1

5 DEVELOPING MODEM APPLICATIONS

This chapter discusses devel oping market-specific software

applications to work with the QUALCOMM Globalstar

GSP-1620 Satellite Data Modem, par ticularly Remote

Monitoring and Supervisory C ontrol and Data Acquisition

(SCADA) applications.

A GSP-1620 modem functions as a 9600 bps full duplex

satellite modem. Applications communicate with the modem

using standard “Hayes Modem” AT comm ands, or

initialization strings.

This chapter includes the following topics:

• Recommended development tools

• SCADA application components

• Packet/asynchronous data overview

• Modem application scenarios

• Working with modem features (includin g using Data and

Control ports, Globalstar satellite service, Short

Messaging Service, Globalstar alerts, and position

location determination)

• Using packet data (including networking software and

PPP sessions, IP addressin g, dormant mode,

mobile-originated and mobile-terminated packet data

calls, and roa ming)

• Using asynchronous data (incl uding mobile-originated

and mobile-terminated asynchronous data calls,

accessing packet data over an asynchronous connection,

and roaming)

• Typical modem initialization st rings

Contents

Main TABLE OF CONTENTS Page Page Page Page Page Page Page L IST OF F Page L IST OF T Page R EVISION H Version Release Date Notes Page ABOUT THIS MANUAL Who Should Use This Manual How This Manual Is Organized This following table summarizes how information is organized in this manual. Chapter Description Notational Conventions Commands, parameters, values, filenames, directory locations <Non-literal elements> Tip Abbreviations and Acronyms Page Page Related Documentation Cautions and Warnings 1 GSP-1620 Modem Overview Typical Modem SCADA Applications DTE DCE DTE DCE Conceptual Overview Whats in the Modem Integrators Kit? Page What You May Need in Addition to the Kit Page 2 Connecting Hardware Components A Quick Tour of the Modem Quick Bench Set-Up 80-99208-1 Rev. D 2-3 Figure 2-1. Simplified Top View of GSP-1620 Modem Connecting the Modem Cables Connecting the Modem Interface Cable Page Connecting Antenna Cables Connecting the Diagnostic Cable Page Connecting and Mounting the Antenna Page Mounting the Modem Grounding the System Providing Power to the Modem Page Page Setting Up HyperTerminal to Talk to the Modem Testing the Modem Setup Page Resetting or Powering Off the Modem Page Where to Go Next Now that the GSP-1620 modem has power and you can communicate with it, here is where to go next: 3 UTPST Overview Using the UTPST Page Re-programming Default Parameters Page Page Bulk-Programming Modems Upgrading Modem Software Page 4 Checking Modem Sta tus Page Making Simple Packet Data Calls Making a Call from the Data Port Entering Online-Command Mode Page 5 Recommended Development Tools SCADA Application Components DTE DCE Packet/Asynchronous Data Overview Modem Application Scenarios Page Working with Modem Features Using Data and Control Ports DTE DCE Rm Interface Data and Control Port Configurations Port Arbitration Behavior Page Page AT Command Processing Modes Port(s) Affected by AT Commands Page Port Activation (DTR) Changes during Operation Port Use During Power On and Power Off Globalstar Satellite Service Short Messaging Service (SMS) SMS Alerts SMS Message Field In fo r m ation SMS AT Commands Using SMS for Mobile-Terminated Calls Globalstar Service Alerts Service Status Message Position Location Determination Using Packet Data Data Rate and Throughput Networking Software and PPP Sessions Interoperability with Different Operating Systems IP Addressing for the GSP-1620 Modem Dynamic IP Addressing Fixed IP Addressing Finding IP Addresses Virtual Private Networ k S ervice Dormant Mode Service Page Mobile-Originated Packet Data Calls Mobile-Terminated Packet Data Calls Answering Calls Using the Data Port Only Answering Calls Using the Data and Control Ports Roaming and Packet Data Service Using Asynchronous Data DTE DCE PSTN Data Rate and Throughput Mobile-Originated Asynchronous Data Calls Mobile-Terminated Asynchronous Data Calls Accessing Packet Data Over an Asynchronous Connection Roaming and Asynchronous Data Service Typical Modem Initialization Strings +++ Page 6 AT Command Quick Reference Tables Page Page Page Page AT Commands Overview Command Alphabet Case Sensitivity Command Line Format Command Syntax Basic AT Commands Results Returned Command Echo (E) Get Info (I) Monitor Speaker Loudness (L) Monitor Speaker Mode (M) Select Pulse Dialing (P) Result Code Suppression (Q) Select Tone Dialing (T) DCE Response Format (V) Result Code Selection Command (X) Reset to Default Configuration (Z) DCE Received Line Signal Detector Behavior (&C) DTE Data Terminal Ready Behavior (&D) Set to Factory-Defined Configuration (&F) Basic Action Commands Answer Incoming Call (A) Repeat Last Command (A/) Dial (D) Page Hook Control (H) Return to Online Data Mode (O) Basic S-Registers Results Returned Automatic Answer (S0) Command Line Termination Character (S3) Response Formatting Character (S4) Command Line Editing Character (S5) Pause Before Blind Dialing Time (S6) Connection Completion Timeout (S7) Comma Dial Modifier Time (S8) Carrier Detect Threshold Timeout (S9) Carrier Loss to Disconnect Timeout (S10) DTMF Tone Duration and Spacing (S11) Globalstar-Specific S-Register Extensions Silent Retry Timeout (S777) Extended Configuration AT Commands Set Forward MUX Option (+CMUX) Set Rm Interface Protocol (+CRM) Get Modem User Terminal ESN (+GSN) Set Character Framing (+ICF) Set Local Flow Control (+IFC) Page Set Rm Interface Command Baud Rate (+IPR) See Description above for values assumed when optional See Description above for a discussion of power-on/reset defaults. Online-Command Mode Commands Change from Online to Online-Command Mode (+++) Asynchronous Data through Gateway IWF Commands Set Remote Config String (+CFG) Data Compression Control Command (+DS) Page Page Error Control Selection Command (+ES) Page Modulation Selection Command (+MS) Dormant Mode Commands Set Dormant Mode Timeout Value (+CTA) Packet No Dial ($QCPKND) SMS Commands SMS Move/Delete ($QCSMSM) SMS Print ($QCSMSP) See Table 6-5. Page Page SMS Lock ($QCSMSL) SMS Alert ($QCSMSA) SMS Info ($QCSMSI) Error Log Services Commands Retrieve Error Log ($QCERR) Returns the modems error log and build information. Clear Error Log ($QCCLR) Service Status Commands Service Alert ($QCSA) Service Status ($QCSTATUS) Page Special Calls and Services Commands Time of Day ($QCTOD) Page Position Location Service ($QCPLS) Page Markov Statistics ($QCMSTATS) Set Mode ($QCMODE) Protocol Stack Modific ation Commands TCP Stack Changes ($QCTCP) Page Page Use Van Jacobsen Header Compression ($QCVJ) Allows Van Jacobse n header compression to be tu rned on or off for the next negotiated connection. Page 7 INTO OEM PRODUCTS Integrating Modems into Products Modem Mechanical Description Modem Board Layout 7-4 80-99208-1 Rev. D Figure 7-1. GSP-1620 Modem Board Layout (Top View) AA A Page Modem Dimensions and Weight Modem Antenna Connectors Data and Control Ports DTR/DSR Signal and Power On/Off Changing Data and Control Port Configuration Control Port Signals Data Port Signals DB-25 Data and Control Port Pinouts Page Page Diagnostic Port Diagnostic Port Pinouts Page DC Power Surge Protection EMI Filtering Power Consumption Power-On Power-Off Hard Power Reset Grounding Modem Mounting Guidelines QUALCOMM Mark on OEM Enclosures Integrated Product Regulatory Labeling Mounting Antennas On-Site Modem Antenna Specifications Antenna Dimensions and Weight Antenna Depiction Page Antenna Cable Specifications Page Calculating Antenna Cable Length Mounting Antennas at the Field Site Finding a Good Antenna Location Securing Antenna Cables Mounting and Sealing Antennas on Flat Surfaces Mounting and Sealing Antennas on Poles Mounting Multiple Antennas Environmental Specifications GSP-1620 Modem Environments Temperature/Humidity Thermal Radiation Altitude Vibration Page Mechanical Shock Operational Acoustic Noise Digital Data Connector Durability Applied Forces Dielectric Resonator Antenna (DRA) Environments Temperature/Humidity Thermal Radiation Icing/Freezing Rain/Snow Altitude Operational Vibration Operational - Random Mechanical Shock Page Page 8 Page A Space Segment Ground Segment Coverage Page Carriers Distributors and OEMs for User Terminals Page B Certification Federal Communications Commission (FCC) European R&TTE Directive 1999/5/EC RF Restrictions Radio Astronomy Zones GPS Interference Elimination Radio Frequency Exposure Restrictions Electronic Device Restrictions Pacemakers Hearing Aids Other Medical Devices Page Page Page D QUALCOMM Globalstar Customer Service Technical Support Information Order Fulfillment Information Website Information Contacting QUALCOMM Customer Service Contact information Page Page 80-99208-1 Rev. D E-1 E Table E-1. Specification Summary GSP-1620 Modem E-2 80-99208-1 Rev. D Table E-1. Specification Summary GSP-1620 Modem Page Page I Symbols A Page B C Page D E F G H I J L M Page N O P Q R S Page T U V W X Y