This manual is based on the GSP-1620 Satellite Data Modem. Software or hardware changes may have occurred after this printing. QUALCOMM reserves the right to make changes in hardware, software, and technical and product specifications without prior notice. QUALCOMM Incorporated 5775 Morehouse Drive San Diego, CA. 92121-1714 U.S.A. Copyright © 2001 QUALCOMM Incorporated. All rights reserved. Printed in the United States of America. This technology is controlled by the United States Government.
TABLE OF CONTENTS Who Should Use This Manual .................................................................. xvii How This Manual Is Organized............................................................... xviii Notational Conventions ............................................................................. xix Abbreviations and Acronyms...................................................................... xx Related Documentation.......................................................................
Integrator’s Reference Manual Service-Programming Modems ...........................................................3-1 UTPST Overview........................................................................................ 3-2 Using the UTPST ....................................................................................... 3-2 Re-programming Default Parameters....................................................... 3-4 Bulk-Programming Modems............................................................
Table of Contents IP Addressing for the GSP-1620 Modem ...............................5-23 Dynamic IP Addressing ....................................................5-23 Fixed IP Addressing .........................................................5-24 Finding IP Addresses ........................................................5-24 Virtual Private Network Service .....................................5-24 Dormant Mode Service ...........................................................
Integrator’s Reference Manual DCE Received Line Signal Detector Behavior (&C) .............6-16 DTE Data Terminal Ready Behavior (&D) ...........................6-16 Set to Factory-Defined Configuration (&F) ...........................6-17 Basic Action Commands .......................................................................... 6-18 Answer Incoming Call (A) ......................................................6-18 Repeat Last Command (A/) ....................................................
Table of Contents Dormant Mode Commands ...................................................................... 6-48 Set Dormant Mode Timeout Value (+CTA) ...........................6-49 Packet No Dial ($QCPKND) ..................................................6-50 SMS Commands ....................................................................................... 6-51 SMS Move/Delete ($QCSMSM) ..............................................6-51 SMS Print ($QCSMSP) ..........................................
Integrator’s Reference Manual DC Power ................................................................................7-15 Surge Protection ...............................................................7-16 EMI Filtering ....................................................................7-16 Power Consumption ..........................................................7-16 Power-On ...........................................................................7-17 Power-Off ...................................
Table of Contents Mechanical Shock ...................................................................7-34 Operational .......................................................................7-34 Non-Operational ...............................................................7-34 Acoustic Noise .........................................................................7-34 Digital Data Connector Durability ........................................7-34 Applied Forces .............................................
Integrator’s Reference Manual RF Certification/Restrictions .............................................................B-1 Certification ............................................................................................... B-1 Federal Communications Commission (FCC) ........................ B-2 European R&TTE Directive 1999/5/EC .................................. B-2 RF Restrictions ..........................................................................................
LIST OF FIGURES Figure 1-1. Typical Modem SCADA Application Using Packet Data ...................................................................1-4 Figure 1-2. Typical Modem SCADA Application Using Asynchronous Data .......................................................1-5 Figure 1-3. Conceptual Diagram of GSP-1620 Modem ..................1-6 Figure 2-1. Simplified Top View of GSP-1620 Modem ...................2-3 Figure 2-2. Modem Interface Cable Bridle .....................................
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LIST OF TABLES Table 1-1. Table 1-2. Table 2-1. Table 3-1. Table 3-2. Table 5-1. Table 5-2. Table 5-3. Table 5-4. Table 5-5. Table 6-1. Table 6-2. Table 6-3. Table 6-4. Table 6-5. Table 6-6. Table 6-7. Table 7-1. Table 7-2. Table 7-3. Table 7-4. Table 7-5. Table 8-1. Table E-1. Table E-2. 80-99208-1 Rev. D Typical GSP-1620 Modem Applications ......................1-3 Checklist of Modem Integrator’s Kit Components ......1-8 DTR Switch Positions ...................................................
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REVISION HISTORY Version Release Date Notes Rev. A August 23, 2000 First Production Release Rev. B October 13, 2000 Revised hardware specifications Rev. C January 25, 2001 Release to accompany GSP-1620 modem software version 5.2: ■ ■ ■ ■ ■ Rev. D April 17, 2001 Updates and corrections: ■ ■ ■ ■ 80-99208-1 Rev.
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ABOUT THIS MANUAL This QUALCOMM Globalstar GSP-1620 Satellite Data Modem Integrator’s Reference Manual, also referred to as the Integrator’s Reference Manual, provides the information needed to install and use the QUALCOMM Globalstar GSP-1620 Satellite Data Modem, also referred to as the GSP-1620 modem in this document.
Integrator’s Reference Manual How This Manual Is Organized This following table summarizes how information is organized in this manual. xviii Chapter Description Chapter 1. Getting Started Introduction to the GSP-1620 modem and the Modem Integrator’s Kit. Chapter 2. Quick Bench Set-Up Quick instructions for connecting and powering up the modem and sending commands via HyperTerminal. Chapter 3.
About This Manual Notational Conventions The following table shows the notational conventions that convey specific types of information in this manual. Convention Description Commands, parameters, values, filenames, directory locations Items shown in courier typeface indicate commands, parameters, filenames, and directory locations. Items shown within angle brackets and indicate non-literal elements for which you type a substitute.
Integrator’s Reference Manual Abbreviations and Acronyms xx AC Alternating Current API Application Programming Interface AT Attention CCA Circuit Card Assemblies CDMA Code Division Multiple Access CDR Call Detail Record CD-ROM Compact Disc Read-Only Memory CE Community European CFR Code of Federal Rules CP Control Port CTS Clear To Send DC Direct Current DCD Data Carrier Detect DCE Data Communications Equipment DM Diagnostic Monitor DN Directory Number DNI Do Not Install
About This Manual 80-99208-1 Rev.
Integrator’s Reference Manual xxii PLS Position Location Service POS Point of Sale; or Position PPP Point-to-Point Protocol PST Pacific Standard Time PSTN Public Switched Telephone Network PT Pacific Time QA Quality Assurance RF Radio Frequency RFR Ready For Receive RI Ring Indicator RLSD Received Line Signal Detector RMA Return Material Authorization RSSI Received Signal Strength Indicator RTS Ready To Send RTU Remote Termination Unit RX Receive RX D Receive Data SCADA
About This Manual TXD Transmit Data UCT Universal Coordinated Time URL Uniform Resource Locator UT User Terminal UTC Universal Time Coordinated UTPST User Terminal Program Support Tool VPN Virtual Private Network VSWR Voltage Standing Wave Ratio Related Documentation Globalstar UT Program Support Tool User’s Guide, 80-98225-1. Globalstar User Terminal Service Programming Guide, 80-98482-1. Globalstar UTPST Script API Reference Manual, 80-99114-1.
Integrator’s Reference Manual Cautions and Warnings xxiv Warning Before working with the modem hardware or power connections, remove rings, watches, and other metallic objects that could cause electrical shock or burns. Caution Use proper electrostatic discharge (ESD) equipment and procedures to avoid damage to the modem. Caution Any changes or modifications to this equipment not expressly approved in this document could void your warranty and your authority to operate this equipment.
1G ETTING STARTED Welcome to the Integrator’s Reference Manual for the QUALCOMM Globalstar GSP-1620 Satellite Data Modem. The GSP-1620 modem offers data communication solutions, particularly for Remote Monitoring and Supervisory Control and Data Acquisition (SCADA) applications in locations such as power substations, telecommunication concentration nodes, oil and gas wells, pipes, and offshore facilities.
Integrator’s Reference Manual GSP-1620 Modem Overview The QUALCOMM Globalstar GSP-1620 Satellite Data Modem delivers reliable digital data communications wherever Globalstar data service is available, using QUALCOMM’s patented CDMA technology and the Globalstar Communications System’s constellation of 48 low-Earth-orbit (LEO) satellites.
Getting Started Typical Modem SCADA Applications In remote settings or difficult-to-access sites, acquiring and responding to process control and alarm data can be challenging and costly. For both system integrators and OEMs, the QUALCOMM Globalstar GSP-1620 Satellite Data Modem provides real-time, low cost, bi-directional data communication solution applications in remote locations for fixed or mobile use. The GSP-1620 modem lets you retrieve data automatically from remote sites.
Integrator’s Reference Manual Figure 1-1. Typical Modem SCADA Application Using Packet Data Satellite Outdoor Antenna Rx Tx Globalstar Gateway DCE Remote DTE GSP-1620 Modem SCADA Terminal Internet Data Port Control Port Host Server For packet data connections, the GSP-1620 modem essentially functions as a “node” on the Internet and, with its fixed or dynamically assigned IP address, can be addressed in real time as often as necessary to maintain application control over the remote devices.
Getting Started Figure 1-2. Typical Modem SCADA Application Using Asynchronous Data Satellite Outdoor Antenna Rx Tx Globalstar Gateway DCE Gateway IWF Modem Remote DTE GSP-1620 Modem SCADA Terminal PSTN Host Server Data Port Control Port Host Modem For asynchronous data connections, the GSP-1620 modem can dial or be dialed by a host modem, connecting through the Globalstar Satellite Communications System and the PSTN.
Integrator’s Reference Manual For example, in the electric utility industry, a SCADA application using the GSP-1620 modem could remotely turn on a pump, close a switch, open a gate, request a new meter reading, monitor line voltage, or report on power outages. Conceptual Overview Figure 1-3 depicts a conceptual overview of the QUALCOMM Globalstar GSP-1620 Satellite Data Modem, including its ports and antenna. Figure 1-3.
Getting Started The GSP-1620 modem is a bare board “sandwich” stack of Circuit Card Assemblies (CCA) containing two boards: • Globalstar RF board — includes the LNA, RF power amp, upconverters and downconverters, TCXO, synthesizers, and the remaining power electronics. • Globalstar Digital board — includes the processor, the modem, and some of the power management electronics.
Integrator’s Reference Manual Table 1-2.
Getting Started What You May Need in Addition to the Kit The Modem Integrator’s Kit should be sufficient for setting up one modem on a bench for development and testing. For GSP-1620 modem development purposes (bench setup and developing modem applications), it is recommended that you have a Windows PC, because the Modem Integrator’s Kit CD-ROM contains some Windows code samples.
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2Q UICK BENCH SET-UP Your GSP-1620 Modem Integrator’s Kit contains a QUALCOMM Globalstar GSP-1620 Satellite Data Modem.
Integrator’s Reference Manual Connecting Hardware Components The setup process for the GSP-1620 modem includes: Tip • A quick tour of the modem • Connecting the modem cables ❑ Connecting the Interface cable (Data port, Control port, power) to the modem and to your PC ❑ Connecting the antenna cables (Tx, Rx) to the modem ❑ Connecting the Diagnostic cable (if you want to power the modem from its AC adapter, service-program the modem, or monitor some modem functions) • Connecting and mounting the
Quick Bench Set-Up Figure 2-1.
Integrator’s Reference Manual Connecting the Modem Cables For the GSP-1620 modem to work, you must connect several cables: • Modem interface cable — connects the Data port to a PC, connects the Control port to a PC (optional), and connects power leads to a DC power supply. • Antenna cables — connect the transmit (Tx, J3) and receive (Rx, J7) leads to the Tx and Rx connectors on the Dielectric Resonator Antenna.
Quick Bench Set-Up Steps 1 2 3 TO CONNECT THE INTERFACE CABLE TO THE MODEM ■ Connect the DB-25 modem connector on the interface cable (Figure 2-2) to the interface port on the modem (Figure 2-1). Do not connect power yet. Steps 1 2 3 TO CONNECT THE INTERFACE CABLES TO YOUR PC 1. On the interface cable (Figure 2-2), connect the Data port connector (labeled “P2-DATA PORT”) to COM 1 or another available serial COM port on your PC. The Data port transmits packet (PPP) or asynchronous data.
Integrator’s Reference Manual Connecting Antenna Cables The Modem Integrator’s Kit contains two antenna cables (3 feet long) with snap-in connectors, for connecting the modem to the Dielectric Resonator Antenna (DRA). The antenna must be located outdoors.
Quick Bench Set-Up Connecting the Diagnostic Cable The Diagnostic cable lets you: • Service-program GSP-1620 modems, using the Globalstar User Terminal Program Support Tool (UTPST). For more information about the UTPST, see UTPST Overview on page 3-2. • Monitor or verify some modem functions, using the QUALCOMM Globalstar Modem Operation Monitor. For more information, see the QUALCOMM Globalstar Modem Operation Monitor User’s Guide, 80-99399-1. The cable includes an optional AC adapter.
Integrator’s Reference Manual Figure 2-3. Modem Diagnostic Cable PC Connector "P1 - PC" Modem connector "P2 - module" Lock ring AC Wall adapter Power connector Locking threads POS 2 DTR OPEN POS 1 DTR to GRD POS 3 NOT USED DTR Switch box 005AA_01 Table 2-1. DTR Switch Positions Position Switch Label Effect POS 1 DTR to GND DTR is asserted. POS 2 DTR Open DTR is de-asserted. POS 3 Not Used DTR is de-asserted (equivalent to POS 2).
Quick Bench Set-Up Steps 1 2 3 TO CONNECT THE DIAGNOSTIC PORT CABLE 1. Connect the DE-9 modem connector (“P2-Module”) on the Diagnostic cable (Figure 2-3) to the 9-pin Diagnostic port on the modem (Figure 2-1). 2. Connect the DE-9 PC connector (“P1-PC”) on the Diagnostic cable to a COM port on your computer. 3. Locate the switch on the cable, and set it to “POS 1 DTR to GND.” Do not plug in the AC wall adapter yet. For information about powering the modem, see Providing Power to the Modem on page 2-12.
Integrator’s Reference Manual Figure 2-4. Antenna Base Showing Connectors O-Ring groove RX Antenna connector (labeled on antenna base) TX Antenna connector (labeled on antenna base) Steps 1 2 3 TO MOUNT THE ANTENNA 1. Locate the antenna outdoors where it has a clear view of the sky. Make sure the antenna is close enough to the modem that you can use the antenna cables provided in the Modem Integrator’s Kit. The antenna must have a clear view of the sky to get a strong signal. 2.
Quick Bench Set-Up 3. Plug the other antenna cable into the receive (Rx) connector on the antenna. 4. Secure the antenna to a flat surface using six M4 screws through the six mounting holes. To prevent moisture and dirt from getting underneath the antenna and onto the connectors, you can use an O-ring (2.050 inches in diameter by 0.103 inch wide, silicone or ethylenepropylene) if the mounting surface is smooth, or adhesive caulking if the surface is rough.
Integrator’s Reference Manual Providing Power to the Modem The GSP-1620 modem requires input DC power of 5.6 V to 16 V, 1 Amp (maximum), with a maximum of 50 mV peak-peak ripple and noise.
Quick Bench Set-Up Steps 1 2 3 TO POWER THE MODEM USING THE KIT’S AC ADAPTER 1. On the Modem Interface cable bridle (shown in Figure 2-2), locate the DC POWER (red) and SIG GND (black) connectors. Then electrically isolate each connector by capping or taping it. Since you will be using the AC adapter instead of a DC power supply, it is important to isolate the DC power connectors to prevent shock. 2. On the Modem Interface cable bridle (shown in Figure 2-2), locate the RESET lead (yellow).
Integrator’s Reference Manual Caution Steps 1 2 3 To power off the GSP-1620 modem, set the DTR switch to “POS 2 DTR Open,” wait at least 10 seconds, and then disconnect power. Setting the DTR switch to “POS 2” allows the modem to gracefully shut down. If the modem is powered off without allowing it to go through its shutdown sequence, some service programming values may be lost. TO POWER THE MODEM USING AN OPTIONAL DC POWER SUPPLY 1.
Quick Bench Set-Up Setting Up HyperTerminal to Talk to the Modem To talk to the modem you will need HyperTerminal or a similar program on your computer. If you are using an operating system other than Windows, you can use any application that can talk to a serial port. Note For bench setup, you probably want to run HyperTerminal on the computer connected to the Control port of the modem.
Integrator’s Reference Manual 2. In HyperTerminal, click OK to accept the settings. HyperTerminal automatically attempts to connect to the modem, and the modem powers on when HyperTerminal asserts the RS-232 DTR signal. Once it has connected you should see the following within a few seconds: SELF TEST RESULT: OK Note: The SELF TEST RESULT message appears only during modem power-up.
Quick Bench Set-Up Steps 1 2 3 TO CHECK THE BAUD RATE ON THE CONTROL PORT 1. Look at the Status bar at the bottom of the HyperTerminal window. It should read “9600 8-N-1.” The Control port has a fixed baud rate of 9600. Be sure HyperTerminal is configured accordingly. 2. To confirm that HyperTerminal can communicate with the modem, type AT and press Enter.
Integrator’s Reference Manual Resetting or Powering Off the Modem This section suggests some procedures suitable for resetting or powering off your bench modem. If you are developing modem applications, you should consider additional issues for these topics, in the following sections: DTR/DSR Signal and Power On/Off on page 7-7, Power-Off on page 7-18, Hard Power Reset on page 7-18. Steps 1 2 3 TO RESET THE MODEM 1.
Quick Bench Set-Up 3. If the Diagnostic cable is connected to the modem, set the switch to “POS 2 DTR Open.” When this switch is set to “POS 2,” DTR is de-asserted on the Diagnostic cable and the modem begins its shutdown sequence. 4. Wait at least ten seconds for the modem to perform shutdown operations and save information in memory. The modem powers off approximately nine seconds after all ports are disconnected (including the Diagnostic port via the switch on the Diagnostic cable). 5.
Integrator’s Reference Manual Where to Go Next Now that the GSP-1620 modem has power and you can communicate with it, here is where to go next: To do this: Service-program the modem to work within the Globalstar system and with your Service Provider Chapter 3 ■ Check whether the modem has Globalstar service Make a simple packet data call from the modem, over-the-air Chapter 4 ■ Develop software applications to work with GSP-1620 modem features, including Data and Control ports, Short Messaging Servic
3S ERVICE-PROGRAMMING MODEMS QUALCOMM Globalstar GSP-1620 Satellite Data Modems work within the Globalstar satellite system, using “airtime” offered by a Service Provider (SP). To operate, each GSP-1620 modem must be service programmed, meaning that certain key parameters (such as the Globalstar IMSI) must be configured to work with the SP. For service programming, you connect the modem’s Diagnostic port to a Windows 98/NT/2000 PC, using the Diagnostic cable included in the Modem Integrator’s Kit.
Integrator’s Reference Manual UTPST Overview The Globalstar User Terminal Program Support Tool (UTPST) lets you view, change, and save information pertaining to a Globalstar User Terminal (modem or phone). You can: Note • Configure system settings (that is, service program), either directly via the UTPST’s graphical user interface, or by writing scripts that access the UTPST’s Scripting API. • Save configuration settings to a UTPST file or open them from a file.
Service-Programming Modems 2. Make sure the power connectors of the Modem Interface cable are not connected to a DC power supply. 3. Make sure the switch on the Diagnostic cable is set to “POS 1 DTR to GND.” When this switch is set to “POS 1,” DTR is asserted on the Diagnostic cable and the modem will power up immediately when power is applied. 4. Connect the AC adapter to the Diagnostic cable and to an AC outlet, as shown in Providing Power to the Modem on page 2-12.
Integrator’s Reference Manual Re-programming Default Parameters A GSP-1620 modem leaves the factory with a default set of service programming parameters. Before the modem can be activated in the field, you must re-program some of those defaults with valid activation values for the modem’s particular Service Provider (SP), country, and Gateway. Caution The first time you use the UTPST, or before you re-program any values, make a backup copy of the UTPST parameter file.
Service-Programming Modems Table 3-1. Service Programming Parameters You Must Set Parameter / Default Description Action Required for the Modem to Operate Globalstar IMSI (Mobile Country Code component) The 3-digit Mobile Country Code (MCC) component of the Globalstar International Mobile Subscriber Identity (IMSI). The MCC component of the IMSI is generally the same as the Home Service Provider MCC (but could be different based on the activating SP’s requirements).
Integrator’s Reference Manual Table 3-1. Service Programming Parameters You Must Set (continued) Parameter / Default Description Action Required for the Modem to Operate Globalstar Home Service Provider Mobile Country Code (MCC) The 3-digit mobile country code (MCC) representing the Home Service Provider. Typically, the Globalstar Home Service Provider MCC is the same as the MCC component of the Globalstar IMSI (but could be different based on the SP’s requirements).
Service-Programming Modems Bulk-Programming Modems If you need to service-program modems in bulk, for instance to be shipped with OEM market products, you have several options for how to do this, as shown in Table 3-2. Table 3-2. Bulk Service-Programming Options Programming Option For More Information Program each modem individually, using the UTPST’s graphical user interface.
Integrator’s Reference Manual • Boot block software — contains a minimal set of functionality needed to “boot” the modem (get it started). Most software upgrades are application upgrades. Upgrading the boot block software is rarely required. Once you obtain a software upgrade file from QUALCOMM Globalstar Customer Service, you can use the UTPST to load it onto the modem. Steps 1 2 3 TO DETERMINE THE MODEM’S CURRENT SOFTWARE VERSION 1.
4M AKING SIMPLE DATA CALLS This chapter is essentially a quick tutorial that demonstrates making simple packet data calls from the QUALCOMM Globalstar GSP-1620 Satellite Data Modem, including the following topics: • Checking modem status • Making simple packet data calls ❑ Making a call from the Data port ❑ Entering Online-Command mode This chapter assumes that you have connected your modem as described in Chapter 2 and configured necessary service programming parameters as described in Chapter 3.
Integrator’s Reference Manual whether the modem has registered with the Gateway, and the current call state. In this case, you will be able to tell whether the modem has been connected and service programmed properly, and thus has Globalstar satellite service to the Gateway. Steps 1 2 3 TO CHECK MODEM STATUS 1. Make sure that the Control port is disconnected, either physically or by clicking the Disconnect button in a HyperTerminal session connected to it. 2.
Making Simple Data Calls Service Status Brief Description RSSI Received signal strength, from 0 (no signal) to 4 (strong signal). REGISTRATION Current registration status of the modem with the Gateway: NO (not registered) or YES (registered) ROAMING YES if roaming. NO otherwise. CALL STATE Current call state, e.g., IDLE. CALL TYPE Service Option being used in the current call (such as TIA_PPP, TIA_ASYNC, Markov, Loopback; or blank when no call is in progress).
Integrator’s Reference Manual Tip For complete details about making calls and understanding modem port arbitration issues, see Developing Modem Applications on page 5-1. Making a Call from the Data Port You can make a data call by entering AT commands in HyperTerminal connected to the modem’s Data port. You will be able to see the packets streaming, just as a demonstration that the modem can make a packet data call. Steps 1 2 3 TO MAKE A PACKET DATA CALL USING AT COMMANDS ON THE DATA PORT 1.
Making Simple Data Calls Entering Online-Command Mode While a packet data call is in progress on the Data port (the modem is in Online mode), you can interrupt the data stream so the modem will respond to AT commands. This puts the modem into Online-Command mode. Steps 1 2 3 TO ENTER ONLINE-COMMAND MODE 1. While the data call is in progress on the Data port, in HyperTerminal, type this escape sequence: +++ . HyperTerminal responds with OK. 2. Type AT$QCSTATUS .
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5D EVELOPING MODEM APPLICATIONS This chapter discusses developing market-specific software applications to work with the QUALCOMM Globalstar GSP-1620 Satellite Data Modem, particularly Remote Monitoring and Supervisory Control 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 commands, or initialization strings. This chapter includes the following topics: 80-99208-1 Rev.
Integrator’s Reference Manual Note For complete reference information about all modem-supported AT commands, including syntax, descriptions, default values, and results returned, see Chapter 6, AT Command Reference.
Developing Modem Applications • Data flows to and from the modem over-the-air, using the Globalstar satellites and Gateways connected to the Internet (for packet data) or to the PSTN (for asynchronous data). • A host application (server) manages remote sites (DTEs); for example a host application might manage data from numerous remote oil or gas wells. Figure 5-1.
Integrator’s Reference Manual Packet/Asynchronous Data Overview The GSP-1620 modem handles both packet and asynchronous data connections. For a particular SCADA application, one may make more sense than the other. Table 5-1 compares the two types of data. Tip QUALCOMM Globalstar packet data service has a lower overhead and faster connection time than asynchronous data does. In general, if a SCADA application does not specifically need asynchronous data, use packet data instead.
Developing Modem Applications Table 5-1. Packet vs. Asynchronous Data (continued) Packet Data Asynchronous Data May require a VPN and software to get past firewalls. May be able to directly connect inside a firewall. Mobile-terminated calls require either a fixed public IP address, or a fixed private IP address and VPN tunnel to the Gateway (see Mobile-Terminated Packet Data Calls on page 5-27).
Integrator’s Reference Manual • • Scenario 2 — A periodic application: ❑ No auto-answer. ❑ Application powers on the modem periodically (perhaps once a day), queries host for data, then turns off. ❑ Application powers on the modem periodically and sends data to the host. ❑ Useful where power usage is critical, perhaps due to limited battery charge. Scenario 3 — Asynchronous data application: ❑ The SCADA application keeps the GSP-1620 modem powered up to accept incoming calls.
Developing Modem Applications Working with Modem Features This section discusses key features of the GSP-1620 modem and how to use them programmatically in your application. The features discussed in this section work with either packet data or asynchronous data. For packet-specific features, see Using Packet Data on page 5-21. For asynchronous-specific features, see Using Asynchronous Data on page 5-30.
Integrator’s Reference Manual The Um interface shown in Figure 5-2 is the dedicated wireless traffic channel between the GSP-1620 modem (DCE) and the Gateway Interworking Function (IWF). Table 5-2 shows the signal lines for each port in Figure 5-2. Note The modem signal naming convention assumes that the modem is the DCE and that the user application is the DTE. Table 5-2.
Developing Modem Applications • Control port only — only AT commands can be sent to modem (no data). • Data and Control ports — the DTE can receive data on the Data port and, at the same time, communicate with the modem on the Control port using AT commands. The different Data and Control port configurations above are based on which ports are defined as active: • A port is active if DTR is asserted on that port. • A port is inactive if DTR is de-asserted on that port.
Integrator’s Reference Manual Table 5-3. Port Arbitration Behavior Control Port Active Data Port Active Port Behavior No No Control and Data ports are inactive and modem is powered down unless the Diagnostic port is active. No Yes The Data port processes all data and AT commands, including the following: ■ ■ ■ ■ Yes No All AT commands are processed on the Control port. Data calls are not supported because the Data port is inactive.
Developing Modem Applications Table 5-3. Port Arbitration Behavior (continued) Control Port Active Data Port Active Port Behavior Yes Yes All AT commands are processed on the Control port. The Data port is used only for the transfer of packet or asynchronous data resulting from a data call. AT commands received on the Data port are ignored. ■ ■ ■ ■ ■ ■ ■ ■ ■ 80-99208-1 Rev.
Integrator’s Reference Manual AT Command Processing Modes Data services AT command processing consists of three modes: Steps 1 2 3 5-12 Command mode — While in the Command mode, data service is inactive and the DCE processes AT commands received on the Rm interface. • Online mode — Online mode is entered when a data connection is established and data service becomes active.
Developing Modem Applications Steps 1 2 3 TO RE-ENTER ONLINE MODE FROM ONLINE-COMMAND MODE ■ Use the ATO command (see Return to Online Data Mode (O) on page 6-23). Port(s) Affected by AT Commands Various AT commands modify port configurations or initiate actions on a port. Since the modem has both a Data and Control port that can receive AT commands, the port affected by the received AT command is defined for each applicable port configuration.
Integrator’s Reference Manual Nomenclature for Table 5-4 Table 5-4 defines the port(s) affected by AT commands that may modify parameters other than those of the active AT command port.
Developing Modem Applications Table 5-4.
Integrator’s Reference Manual Note For DTR signal timing requirements, see Changing Data and Control Port Configuration on page 7-8. Port Use During Power On and Power Off The Data and Control ports provide a feedback mechanism to inform the user when power on and power off are complete. The modem powers on when either or both of the ports’ DTR signals are asserted.
Developing Modem Applications • Reverse Link (Modem Transmit): 1610.73 to 1625.49 MHz Short Messaging Service (SMS) The GSP-1620 modem supports IS-637 Mobile Terminated Short Messaging Service (SMS). This is a separate feature from data (packet and/or asynchronous), and may be billed differently by the Service Provider. Mobile-terminated SMS allows the host application to “send” numeric, alphanumeric, or binary messages to the GSP-1620 modem.
Integrator’s Reference Manual Once the DTE application receives an SMS alert, it is up to the application to read the SMS message, using the AT$QCSMSP command.
Developing Modem Applications Here is a brief description of how such a scenario might work: • The modem is idle. • The host application sends a short SMS message to the modem from the Gateway, perhaps using an email account on the Internet. (A sample email address might be “mdn@msg.globalstarusa.com.” This is an example only. Contact your Service Provider to get the latest SMS message address format for your modem.
Integrator’s Reference Manual Note • Acquisition — Gateway/satellite coverage is acquired (entering service, leaving service, or changing Service Providers). • Roaming status — when the modem “roams” onto a Gateway outside the home service area (see your Service Provider for the scope of these areas). For more information, see Service Alert ($QCSA) on page 6-61.
Developing Modem Applications Position Location Determination The GSP-1620 modem has a “get position” AT command, AT$QCPLS, that provides a latitude and longitude location as well as a confidence value. This command has a parameter to select between getting the current position (via making a new request) or returning the last stored position: Note • If you select the current position and you are NOT in a call, the modem returns “ERROR.
Integrator’s Reference Manual Data Rate and Throughput The GSP-1620 modem offers full duplex transmit and receive at a Data port rate of 9600 bps. Discounting packet data overhead bits, the measured effective “user” throughput (that is, customer data) averages 7400 bps for packet data. Networking Software and PPP Sessions The modem uses PPP as the transport mechanism for data packets. Standard networking software establishes, manages, and tears down the PPP session.
Developing Modem Applications IP Addressing for the GSP-1620 Modem The OEM or Service Provider must choose either a dynamic or fixed Internet Protocol (IP) addressing scheme, depending on the intended use of the GSP-1620 modem: • If the modem is expected to be mobile and roam between Gateway service areas, a dynamic IP addressing scheme should be used. A new IP address may be assigned to the terminal equipment whenever a new packet data call is set up.
Integrator’s Reference Manual (see Dormant Mode Service on page 5-25), the IP address assigned during this session remains active even during temporary gaps in air link coverage or when a call is temporarily released via dormant mode. Fixed IP Addressing Fixed IP addresses can be assigned instead of dynamic IP addresses. With a fixed IP address, the server or host application can use a given specific IP address that is permanently assigned to the modem.
Developing Modem Applications Dormant Mode Service With dormant mode service, the Globalstar system can keep the IP session “up” at the application layer (host and SCADA applications) while dropping the air link/traffic channel, to conserve Globalstar resources and to decrease billing time to the user. The traffic channel is automatically reestablished upon receipt of PPP traffic at the SCADA application end or IP traffic at the Globalstar Gateway.
Integrator’s Reference Manual 3. Use Dial-Up Networking to initiate a packet data call on the Data port. For help with Dial-Up Networking, see your Windows documentation. 4. Start a browser, go to a Web page such as http://www.globalstar.com , and download something. 5. Wait for the data transfer to end, then wait 10 seconds for the idle timer to expire. or On the Control port, type ATH777 to hang up the call and immediately put the modem into dormant mode. 6.
Developing Modem Applications Mobile-Originated Packet Data Calls The GSP-1620 modem lets the application device (DTE) connected to the modem originate a packet data call. Steps 1 2 3 TO MAKE A MOBILE-ORIGINATED PACKET DATA CALL ■ Use the ATD#777 command. The modem returns CONNECT if the call has been established (for other result codes, see Dial (D) on page 6-20). For another example, see Making a Call from the Data Port on page 4-4. Steps 1 2 3 TO HANG UP A PACKET DATA CALL 1.
Integrator’s Reference Manual The following sections describe how the modem itself would deal with incoming (mobile-terminated) calls. This information is provided for developers who wish to configure their applications for mobile-terminated calls, in preparation for future releases of the Gateway software. Tip As an alternative to mobile-terminated calls, you can have the modem receive an SMS message, then originate a call back to the host.
Developing Modem Applications • Your DTE application decides to answer the call by asserting DP_DTR. Different operating systems handle the DTR-DCD handshake differently. To configure it appropriately, you can use the AT&D and AT&C commands. For more information, see DTE Data Terminal Ready Behavior (&D) on page 6-16 and DCE Received Line Signal Detector Behavior (&C) on page 6-16.
Integrator’s Reference Manual separate Gateways. The PPP session will be dropped and will have to be reestablished by the modem. • Once on a new Gateway, automatic re-registration will be performed and a new dynamic IP address will be assigned to the modem. • Roaming support for “fixed” IP addressing outside the “home” Gateway service area is not currently supported.
Developing Modem Applications Figure 5-3. Asynchronous Data Call Components Satellite Outdoor Antenna Tx Rx Globalstar Gateway Gateway IWF Modem GSP-1620 Modem DCE PSTN Interface Port Data Port (Data or AT commands) Control Port (modem AT commands) SCADA Terminal DTE (running your application software) (REMOTE end) Host Modem (or modem bank) Host Server (HOST end) Like most modems, the GSP-1620 modem allows you to customize asynchronous data connections, data compression, and so on.
Integrator’s Reference Manual Data Rate and Throughput For asynchronous data, the GSP-1620 modem offers full duplex transmit and receive at a Data port rate of somewhat less than packet data’s 9600 bps, due to additional overhead for asynchronous data. Similarly, the measured effective “user” throughput (that is, customer data) is somewhat less than the 7400 bps (average) for packet data. Asynchronous connections take longer because of PSTN modem training time.
Developing Modem Applications Note You can also hang up an asynchronous data call by de-asserting DTR. However, if DTR is high on only one port and you then de-assert it, the modem will begin its shutdown sequence. Mobile-Terminated Asynchronous Data Calls The GSP-1620 modem lets the application device (DTE) connected to it receive an asynchronous data call. It is the responsibility of the DTE application to keep the modem powered up if it is to receive incoming asynchronous data calls.
Integrator’s Reference Manual Accessing Packet Data Over an Asynchronous Connection Once an asynchronous connection has been established for the GSP-1620 modem, it could be used to access packet data (using protocols such as PPP or SLIP). If PPP is used on top of asynchronous data service, the DTE would be assigned an IP address. PPP would be required for Internet access using asynchronous data.
Developing Modem Applications Roaming and Asynchronous Data Service The GSP-1620 modem is capable of both “fixed” operation in one location (for example, a building, tank, pipeline, or well) or “mobile” operation for applications on trucks, rail cars, aircraft, or shipping containers.
Integrator’s Reference Manual Typical Modem Initialization Strings Table 5-5 summarizes some typical GSP-1620 modem initialization strings discussed in this chapter and Chapter 4. For complete details about these and other initialization strings, see Chapter 6, AT Command Reference. Table 5-5. Sample Typical Modem Initialization Strings To do this...
Developing Modem Applications Table 5-5. Sample Typical Modem Initialization Strings (continued) To do this...
Integrator’s Reference Manual 5-38 80-99208-1 Rev.
6 AT C OMMAND REFERENCE This chapter provides complete details about the AT command set for the QUALCOMM Globalstar GSP-1620 Satellite Data Modem. The AT command set is the control interface between the Data Terminal Equipment (DTE) and Data Communications Equipment (DCE). For a handy quick reference to all AT commands, see the tables at the beginning of this chapter: • Table 6-1, “Operational AT Commands” — lists the AT Commands recognized by the modem software.
Integrator’s Reference Manual Note • Special Calls and Services Commands (page 6-64) • Protocol Stack Modification Commands (page 6-70) For details about AT commands supported by the GSP-1600 Tri-Mode Phone, see the QUALCOMM Globalstar Data User Guide (80-99126-1). AT Command Quick Reference Tables For many commands listed in Table 6-1 and Table 6-2, the entries for “Value Range,” “No Value Definition,” or “Power-On/Reset Default” have no valid value.
AT Command Reference Table 6-1. AT Command Operational AT Commands (continued) Brief Description Value Range No Value Definition PowerOn/ Reset Default (reference page) &D DTE DTR Behavior (p. 6-16) [0-2] 0 2 &F Set to QUALCOMM-Defined Default Configuration (p. 6-17) 0 0 ^ A Answer Command (p. 6-18) - - - A/1 Repeat Last Command (p. 6-19) - - ^ D Dial (p. 6-20) *2 *2 *2 H Hook Control (p. 6-22) (0, 777) 0 ^ O Return to Online State (p.
Integrator’s Reference Manual Table 6-1. AT Command Operational AT Commands (continued) Brief Description Value Range No Value Definition PowerOn/ Reset Default (reference page) +CRM Rm Interface Protocol Setting (p. 6-33) [0-1] 0 0 +GSN Read phone ESN (p. 6-34) - - - +ICF Character Framing Settings (p. 6-35) [(3-3), (0-3)] 3, 3 3, 3 +IFC Local Flow Control Settings (p. 6-36) [(0-3), (0-2)] 2, 2 2, 2 +IPR Rm Interface Baud Rate Setting (p.
AT Command Reference Table 6-1. AT Command Operational AT Commands (continued) Brief Description Value Range No Value Definition PowerOn/ Reset Default (reference page) $QCSMSP Print formatted information for current SMS message (p. 6-52) [0-1] 0 - $QCSMSL Lock current SMS message (p. 6-56) [0-1] 1 - $QCSMSA Set Alert on new SMS message arrival (p. 6-57) [0-1] 0 0 $QCSMSI Send SMS message count information to DTE (p.
Integrator’s Reference Manual Notes for Table 6-1 1 The A/ command is a special function that does not require the S3 command terminator character and causes the execution of the previously entered AT command. 2 See the D command description for details on parameters. 3 When no parameter value is sent with the +IPR command, the Data port default baud rate of 38400 is assumed. 4 The default baud rate is set with the +IPR command itself.
AT Command Reference AT Commands Overview Command Alphabet The ASCII character set is the alphabet used for the AT command set. Only the low order seven bits of each character are considered significant. Case Sensitivity Although AT commands are specified in uppercase throughout this Integrator’s Reference Manual, both uppercase and lowercase are valid. The modem does not distinguish between uppercase and lowercase letters.
Integrator’s Reference Manual Command Syntax For AT command syntax in this chapter, the following definitions apply: • Words enclosed in identify parameters that can be specified as part of the command. • Syntactical elements enclosed in [square brackets] are optional and may be omitted from the command line. • Syntactical elements enclosed in {brackets} are required and must be specified as part of the command.
AT Command Reference Results Returned Table 6-3. Result Codes for Basic AT Parameter Commands Result Code Condition OK The command was correctly recognized and processed with any required being set. ERROR The command was unrecognized, the parameter was out of range, or some syntactical error was encountered. Command Echo (E) Syntax E[] Description Determines whether or not the DCE echoes characters received from the DTE during the Command and Online-Command modes.
Integrator’s Reference Manual Valid Values 0 MODEL NUMBER: 205 1 MODEL: GSP-1620 Satellite Data Modem 2 BUILD: Power-On/Reset Default Value(s) None. Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details. Monitor Speaker Loudness (L) Syntax L[] Description Controls the DCE speaker loudness. The modem has no concept of a monitor speaker. Therefore, this command is recognized, but does nothing.
AT Command Reference Monitor Speaker Mode (M) Syntax M[] Description Controls when the DCE speaker is on. The modem has no concept of a monitor speaker. Therefore, this command is recognized but does nothing. Values 0 Speaker is always off and never turned on. 1 Speaker on until carrier has been detected. 2 Speaker is always on when OFF-Hook. Power-On/Reset Default Value(s) None. Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details.
Integrator’s Reference Manual Result Code Suppression (Q) Syntax Q[] Description Determines whether or not result codes are transmitted from the modem (DCE) to the DTE. When result codes are suppressed, no result is transmitted to the DTE. Note Because the modem depends on the CONNECT result code returned by the Gateway IWF (for asynchronous data calls), this command is not transmitted as part of the remote configuration. Valid Values 0 DTE transmits result codes.
AT Command Reference Select Tone Dialing (T) Syntax T Description Causes subsequent dialed digits to be signaled using DTMF tones. This command is recognized but does nothing. Valid Values None. Power-On/Reset Default Value(s) None. Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details. DCE Response Format (V) Syntax V[] Description Determines the contents of the DCE header and trailer transmitted to the DTE with result codes and information responses.
Integrator’s Reference Manual Values 0 DCE transmits limited headers and trailers and numeric result codes. 1 DCE transmits full headers and trailers and alphabetic result codes. Power-On/Reset Default Value(s) 1 Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details. Result Code Selection Command (X) Syntax X[] Description Determines whether or not the DCE transmits particular result codes to the DTE when connecting asynchronous data services.
AT Command Reference Values Note 0 CONNECT result code is given upon entering online data state. Dial tone and busy detection are disabled. 1 CONNECT result code is given upon entering online data state. Dial tone and busy detection are disabled. 2 CONNECT result code is given upon entering online data state. Dial tone detection is enabled, and busy detection is disabled. 3 CONNECT result code is given upon entering online data state.
Integrator’s Reference Manual Values 0 Resets parameters to their factory defaults. Power-On/Reset Default Value(s) None. Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details. DCE Received Line Signal Detector Behavior (&C) Syntax &C[] Description Defines how the DCE controls RLSD (circuit 109) in relation to detection of the received line signal from the far end. Valid Values 0 DCE always places RLSD in ON state.
AT Command Reference Valid Values 0 DCE ignores DTR state. 1 DCE transitions to from Online to Online-Command mode when DTR transitions from ON-to-OFF. 2 DCE closes connection (terminates call) when DTR transitions from ON-to-OFF. Power-On/Reset Default Value(s) 2 Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details. Set to Factory-Defined Configuration (&F) Syntax &F[] Description Instructs the modem (DCE) to set all parameters to their QUALCOMM-defined defaults.
Integrator’s Reference Manual Results Returned OK or ERROR; see Table 6-3 on page 6-9 for details. Basic Action Commands This section defines the basic AT action commands for the modem and the functionality provided by each. Answer Incoming Call (A) Syntax A Description Instructs the GSP-1620 modem (DCE) to answer an incoming asynchronous data call.
AT Command Reference Results Returned Result Code Description OK Command is aborted either by reception of an additional character from the DTE or by the DTE turning off DTR (circuit 108) for &D1 and &D2. Also returned if there is no incoming call to answer. CONNECT Connection is successfully established (call is active on traffic channel). This result code is transmitted when the DCD (circuit 109) is turned on.
Integrator’s Reference Manual Results Returned Result Code Condition OK Previous command line is empty. Result from re-execution of the previous command line. Previous command line is not empty. Dial (D) Syntax D Description Originates a call if the dial string is valid. Note This command can be aborted by DCE reception of any character on the Rm interface.
AT Command Reference data, Markov, or Loopback call is initiated. All other valid dial numbers, except dial numbers 1-99, initiate an asynchronous data call and return the result code of the Gateway IWF modem. Dial numbers 1-99 correspond to phone book entries and are translated into dial numbers stored in the specified location. If the specified phone book location is unused, no call is attempted and NO DIALTONE is returned. If the phone book entry exists, a call is attempted using the dial number stored.
Integrator’s Reference Manual Result Codes Description BUSY The modem is currently on traffic and cannot originate a call, the called party is busy, or the IWF returned busy. NO ANSWER Returned only if the IWF modem (for asynchronous data calls) returns NO ANSWER. ERROR Invalid dial string received or a packet data call is already active. Hook Control (H) Syntax H[] Description Controls the “Hook State” of the modem.
AT Command Reference Valid Value(s) 0 Terminates the data call and returns to Command mode. 777 Terminates the data call as above, but instructs the Gateway to transition into dormant mode for packet data calls. Missing Parameter Default Value(s) 0 Power-On/Reset Default Value(s) N/A Results Returned See Table 6-3 on page 6-9 for details. Return to Online Data Mode (O) Syntax O[] Description Returns the modem to Online mode from Online-Command mode.
Integrator’s Reference Manual Results Returned Result Code Condition CONNECT The command was correctly recognized and processed and the transition from Online-Command to Online mode was successful. NO CARRIER The command was correctly recognized and processed, but the connection was not successfully resumed. ERROR The command was not recognized, the parameter was out of range or some syntactical error was encountered.
AT Command Reference Automatic Answer (S0) Syntax S0{=|?} Description The S0 parameter sets the number of rings before the modem will auto-answer an incoming asynchronous data call. Valid Value(s) 0 Automatic answering is disabled. 1-255 Number of rings before an incoming asynchronous call is automatically answered. Missing Parameter Default Value(s) N/A Power-On/Reset Default Value(s) 0 Results Returned See Table 6-4 on page 6-24 for result code details.
Integrator’s Reference Manual Valid Value(s) 0-127 Range of ASCII characters that can be set as the command termination character Missing Parameter Default Value(s) N/A Power-On/Reset Default Value(s) 13 Carriage Return character Results Returned See Table 6-4 on page 6-24 for result code details. Response Formatting Character (S4) Syntax S4{=|?} Description Represents the value of the character transmitted as part of the response to commands.
AT Command Reference Command Line Editing Character (S5) Syntax S5{=|?} Description Represents the value of the character recognized by the modem as the backspace character. When the modem receives this character, it interprets it as a request to delete the previous character in the command line currently being entered.
Integrator’s Reference Manual Power-On/Reset Default Value(s) 2 seconds Results Returned See Table 6-4 on page 6-24 for result code details. Connection Completion Timeout (S7) Syntax S7{=|?} Description Specifies the number of seconds to establish an end-to-end data connection. The modem will disconnect the line if no connection is established within this time. See Silent Retry Timeout (S777) on page 6-31 for similar (Globalstar-specific) control.
AT Command Reference Comma Dial Modifier Time (S8) Syntax S8{=|?} Description Specifies the amount of time, in seconds, that the modem pauses, during dialing, when a “,” (comma) is encountered in the dial string. This parameter is valid only for asynchronous data services. It is sent to the Gateway IWF modem if different from the default value but is otherwise not used by the modem. Valid Value(s) 0 Disabled. Modem does not pause when “,” is encountered. 1-255 Number of seconds to pause.
Integrator’s Reference Manual Valid Value(s) 0 Disabled 1-255 Number of tenths of a second delay Missing Parameter Default Value(s) N/A Power-On/Reset Default Value(s) 6 tenths of a second Results Returned See Table 6-4 on page 6-24 for result code details. Carrier Loss to Disconnect Timeout (S10) Syntax S10{=|?} Description Specifies the amount of time, in 0.1 second increments, that the DCE will remain connected before dropping DCD after the signaling carrier is lost.
AT Command Reference DTMF Tone Duration and Spacing (S11) Syntax S11{=|?} Description Specifies the duration and spacing, in milliseconds, of DTMF tones while dialing a valid number. This parameter is valid only for asynchronous data services. It is sent to the Gateway IWF modem if different from the default value but is otherwise not used by the modem.
Integrator’s Reference Manual Valid Value(s) Silent-Retry timeout in seconds 0-255 Missing Parameter Default Value(s) N/A Power-On/Reset Default Value(s) 150 seconds Results Returned See Table 6-4 on page 6-24 for result code details. Extended Configuration AT Commands This section defines the extended AT configuration commands for the modem and the functionality provided by each.
AT Command Reference Power-On/Reset Default Value(s) 2 Results Returned Result Condition OK A valid was received and processed. ERROR is not supported. +CMUX: ? is used to query current setting. OK +CMUX: (1-2) =? is used to query acceptable range of parameter. OK Set Rm Interface Protocol (+CRM) Syntax +CRM[=|?|=?] Description Sets the Rm interface protocol. When no is specified, is assumed to be 1.
Integrator’s Reference Manual Results Returned Result Condition OK A valid was received and processed. ERROR is not supported. +CRM: ? is used to query current setting. OK +CRM: (0-1) =? is used to query acceptable range of parameter. OK Get Modem User Terminal ESN (+GSN) Syntax +GSN[=|?|=?] Description This read-only command returns the modem’s ESN only when the bare command (AT+GSN) is entered. All other legal syntax forms simply return an OK result code.
AT Command Reference Set Character Framing (+ICF) Syntax +ICF[=|=[],[]|?|=?] Description Sets the modem local serial port asynchronous character framing (start/stop bits) used for transmitting and receiving information between modem and DTE on the Data port of the Rm interface. Note This command has no effect on the configuration of the Control port of the modem’s Rm interface.
Integrator’s Reference Manual Power-On/Reset Default Value(s) = 3 (for format 3 parity value is ignored) = 3 (no parity is actual configuration) Results Returned Result Condition OK and/or are recognized and supported, and have been processed correctly. ERROR A parameter value was out of range or a syntax error was encountered. +ICF: , ? is used to query current setting. OK +ICF: (3), (0-3) =? is used to query acceptable range of parameters.
AT Command Reference As shown in the syntax above, either or can be optionally specified. If only one value is specified then the other is left unchanged. If both values are left unspecified then both are reset to their power-on default values. Optional parameters must be separated by commas. The commas act as place holders (in the command parser) for any missing optional parameter. +IFC? queries for the current settings of and .
Integrator’s Reference Manual Results Returned Result Condition OK Parameters are recognized and supported, and have been processed correctly. ERROR A parameter value was out of range or a syntax error was encountered. +IFC:, ? is used to query current setting. OK +IFC: (0-3),(0-2) =? is used to query acceptable range of parameters.
AT Command Reference Valid Value(s) : 300 300 baud (bits/second) 1200 1200 baud 2400 2400 baud 4800 4800 baud 9600 9600 baud 19200 19200 baud 38400 38400 baud 57600 57600 baud 115200 115200 baud Missing Parameter Default Value(s) See “Description” above for values assumed when optional parameters are missing. Power-On/Reset Default Value(s) See “Description” above for a discussion of power-on/reset defaults.
Integrator’s Reference Manual Online-Command Mode Commands Online-Command mode allows the Online mode data stream to be interrupted so that AT commands are recognized and processed. An escape sequence, injected into the data stream, directs the modem to enter Online-Command mode from Online mode. All AT commands recognized in Command mode are also recognized in Online-Command mode. The H command and the O command are of particular use in Online-Command mode.
AT Command Reference Missing Parameter Default Value(s) N/A. Power-On/Reset Default Value(s) N/A. Results Returned Result Code Condition OK Escape sequence recognized. Online-Command mode is active. None. Continue in Online mode. Escape sequence was not recognized. Asynchronous Data through Gateway IWF Commands These commands support asynchronous data connections. They have no effect locally.
Integrator’s Reference Manual Valid Value(s) Any valid combination of AT commands used to configure the IWF modem of an asynchronous data call. Missing Parameter Default Value(s) N/A Power-On/Reset Default Value(s) "" empty string Results Returned Result Code Condition OK A valid quoted was received and processed. ERROR Badly formatted or syntax is not supported. +CFG: ? is used to query current setting enclosed in quotes ("").
AT Command Reference Specifies the maximum number of dictionary entries which should be negotiated (may be used by the DTE to limit the codeword size transmitted, based on its knowledge of the nature of the data to be transmitted). Specifies the maximum string length to be negotiated (V.42bis P2). As shown in the syntax above, any of , , or may be optionally specified. If any parameter is left unspecified, its value is left unchanged.
Integrator’s Reference Manual Missing Parameter Default Value(s) See “Description” above for values assumed when optional parameters are missing. Power-On/Reset Default Value(s)
=3 =0 = 2048 =6 Results Returned Result Code Condition OK Parameters are recognized and have been processed correctly. ERROR A parameter value was out of range or a syntax error was encountered.AT Command Reference Error Control Selection Command (+ES) Syntax +ES[=[[,[,]]]|?|=?] Description This extended-format compound parameter controls the manner of operation of the V.42 protocol on the PSTN link between the Gateway IWF and the host modem (if provided in the IWF). It accepts three numeric sub-parameters: Specifies the initial requested mode of operation when the IWF is operating as the originator.
Integrator’s Reference Manual : 0 Error control optional (either LAPM or Alternative acceptable); if error control not established, maintain DTE-DCE data rate and use V.14 buffered mode with flow control during non-error-control operation. 1 Error control optional (either LAPM or Alternative acceptable); if error control not established, change DTE-DCE data rate to match line rate and use Direct mode.
AT Command Reference Missing Parameter Default Value(s) See “Description” above for values assumed when optional parameters are missing. Power-On/Reset Default Value(s) =3 =0 =2 Results Returned Result Code Condition OK Parameters are recognized and have been processed correctly. ERROR A parameter value was out of range or a syntax error was encountered. +ES: , , ? is used to query current settings.
Integrator’s Reference Manual Valid Value(s) Missing Parameter Default Value(s) "" empty string Power-On/Reset Default Value(s) "" empty string Results Returned Result Code Condition OK Parameters are recognized and have been processed correctly. ERROR A parameter value was out of range or a syntax error was encountered. +MS: ? is used to query current settings.
AT Command Reference Set Dormant Mode Timeout Value (+CTA) Syntax +CTA[=|?|=?] Description Sets/tests the number of seconds of inactivity (no incoming or outgoing PPP data) before the modem times out the active data call and transitions to dormant mode. This timeout is only valid while in Online mode of a data call. While in Online-Command mode, the +CTA idle timer is disabled. Upon re-entering Online mode the dormant mode timer is enabled and reset to restart the timeout period.
Integrator’s Reference Manual Packet No Dial ($QCPKND) Syntax $QCPKND[=|?|=?] Description Modifies the behavior of the modem when it receives a data packet, while not in a data call. This allows the modem to originate (or not originate) a packet data call upon receipt of a packet without first receiving a Dial command. This feature is necessary for modem-reestablished dormant-mode packet data calls. Select option 0 if you are making only packet data calls.
AT Command Reference Results Returned Result Code Condition OK is supported and the PPP behavior is set. ERROR is not supported and the PPP behavior is left unchanged. $QCPKND: ? is used to query current setting. OK $QCPKND: (0-2) =? is used to query acceptable range if the parameter OK SMS Commands The following commands access the Short Messaging Services (SMS) of the modem. SMS messages are stored in the modem until the user has retrieved and deleted them.
Integrator’s Reference Manual Values 0 Move to the next message in the list. 1 Move to the previous message in the list. 2 Move to the top of the list. 3 Move to the end of the list. 0 NO — Do NOT delete current message before movement. 1 YES — DO delete current message before movement. Default Value(s) 0,0 Move to the next message and do not delete. Power-On Default None. Results Returned Result Code Description OK The move and/or delete operation was completed successfully.
AT Command Reference Values 0 Same as Time-of-Day format ‘0’. 1 Same as Time-of-Day format ‘1’. Default Value 0 Power-On Default None. Results Returned Result Code Description If a current message exists then it will be formatted as described below with field definitions also given.
Integrator’s Reference Manual Table 6-5. SMS Print Command Field Definitions Field Name Description INDEX: This field is a unique 32-bit value (expressed in Hex) given to each SMS message stored. It allows the SMS messages to be sorted according to their arrival time and not their time stamp. See the TIME field for a description of the issues around time stamps.
AT Command Reference Table 6-5. SMS Print Command Field Definitions (continued) Field Name Description TYPE: This field represents the SMS message type. Possible values are: SMSI_CPT_95 SMSI_CMT_95 SMSI_VMN_95 SMSI_CMT_91_CLI SMSI_CMT_91_VOICE_MAIL SMSI_CMT_91_SHORT_MSG SMSI_AWI_95 PRIORITY: This field represents the priority of the received SMS message. The IS-637 standard allows for four (4) levels of priority; 0 being the lowest and 3 being the highest.
Integrator’s Reference Manual Table 6-5. SMS Print Command Field Definitions (continued) Field Name Description LENGTH: This field is the decimal count of the number of 8-bit bytes in the SMS message MESSAGE field. MESSAGE This field is the user data payload sent in the SMS message. Normally this field is text data such as a page or e-mail. However, for purposes of the Data Services it can contain application-specific binary data as well.
AT Command Reference Results Returned Result Code Description OK The requested operation was successful. ERROR If an illegal value is detected or any error associated with changing the value of the LOCK flag. SMS Alert ($QCSMSA) Syntax $QCSMSA[=|?|=?] Description This command sets whether the DTE is “alerted” of the arrival of a new SMS message.
Integrator’s Reference Manual SMS Info ($QCSMSI) Syntax $QCSMSI Description Returns the current state of the SMS database. This state includes the counts of the list storage areas: NEW URGENT, NEW, OLD and VMN. The VMN count will always be 0 because any arriving VMN messages will not be stored. Values None. Default Value None. Power-On Default None. Results Returned Result Code Condition The operation completed successfully (see below for details on format).
AT Command Reference Format Field Definitions Table 6-6. SMS Info Command Field Definitions Field Name Description TOTAL: The total number of SMS messages saved in internal storage. URGENT: The total number of NEW SMS messages marked URGENT. NEW: The total number of NEW SMS messages not marked URGENT. OLD: The total number of OLD/Read messages. VMN: The total number of VMN messages (always ‘0’). LOCKED: The total number of messages (OLD or NEW) that have been LOCKED against “autodelete.
Integrator’s Reference Manual Results Returned Result Code Description If the requested operation was performed. OK An unrecognized syntax was entered. ERROR Clear Error Log ($QCCLR) Syntax $QCCLR Description Clears the error log. Values None. Default Value None. Power-On Default None. Results Returned 6-60 Result Code Condition OK The Error Log was successfully cleared. ERROR An unrecognized syntax was entered. 80-99208-1 Rev.
AT Command Reference Service Status Commands Service Alert ($QCSA) Syntax $QCSA[=|?|=?] Description Turns ON or OFF the unsolicited result code “alerting” the DTE of service changes. Changes may include items such as fade, acquisition, roaming, etc. This “Alert” takes the form of sending an unsolicited result code (SERVICE) out the Rm interface to the DTE (much the same as a RING indication for incoming calls). The destination port for the SMS result code is the active AT command port.
Integrator’s Reference Manual Service Status ($QCSTATUS) Syntax $QCSTATUS Description Returns the current status of the modem. Information returned includes whether the modem sees a Gateway, the signal strength (RSSI), registration status, current call state, roaming, and so on. Values None. Default Value None. Power-On Default None. Results Returned Result Code Condition The operation completed successfully (see below for format; see Table 6-7 for output values).
AT Command Reference Table 6-7. Modem Status Information SERVICE AVAILABLE: YES if the modem has acquired Globalstar service; otherwise NO. SERVICE MODE: Current service mode: NO_MODE AUTOMATIC GLOBALSTAR DEEP_SLEEP SHUTDOWN SOFT_RESET LPM ANY_MODE RESELECTION_NEXT PROVIDER: Current Service Provider; or blank. GATEWAY: Gateway number in decimal; or -1.
Integrator’s Reference Manual Table 6-7.
AT Command Reference Description Exports the time of day as received from the Globalstar system. The application can use this to obtain an accurate time. Values 0 Format type 0 [see below] 1 Format type 1 [see below] Default Value 0 Power-On Default None. Results Returned Result Code Condition was a valid format specifier. The TOD string has two possible formats: OK NOTE: The time is reported in UTC.
Integrator’s Reference Manual Position Location Service ($QCPLS) Syntax $QCPLS[=|=[],[
AT Command Reference Power-On Default None. Results Returned Result Code Condition N: DDD MM SS W: DDD MM SS was a valid position type specifier. The format of position is given as DEGREES (DDD), MINUTES (MM) and SECONDS (SS) for both Longitude (N:) and Latitude (W:) coordinates. 80-99208-1 Rev.
Integrator’s Reference Manual Markov Statistics ($QCMSTATS) Syntax $QCMSTATS Description Returns the statistics from the last Markov call, or the current statistics from a Markov call in progress. Values None. Default Value None. Power-On Default None. Results Returned Result Code Condition The statistics of the previous Markov call (or current call if one is in progress). OK Note: The statistics may not be saved over a power-down or reboot of the modem.
AT Command Reference Set Mode ($QCMODE) Syntax $QCMODE[=|?|=?] Description This command sets the modem’s call mode. It does not affect the Rm interface baud rate (set by the +IPR command, as described on page 6-38). Note When the modem is powered up, the modem call mode is set to 1 (auto-detect mode). However, when the modem is reset by the Z command, the current call mode is left unchanged. Resetting with the &F command does reset the call mode.
Integrator’s Reference Manual Result Condition ERROR is not supported and Call Mode is left unchanged. $QCMODE: ? is used to query current setting. OK $QCMODE:(1-2) =? is used to query acceptable range of the parameter. OK Protocol Stack Modification Commands Caution We strongly recommend that you do not use these commands if you do not have a thorough understanding of what they do and of how TCP networking works.
AT Command Reference Note As shown in the syntax above, any of the parameters can be optionally specified. Any unspecified value is left unchanged. Optional parameters must be separated by commas. The commas act as place holders (in the command parser) for the missing optional parameters. Defines whether or not to use the default TCP values, or to use the values passed in. Sets the lower bound for outgoing TCP packet sizes.
Integrator’s Reference Manual 0-1500 Upper bound for the transmit MSS 0-1500 Receive MSS requested 0-120000 Minimum Retransmit Timeout (in ms) 0-120000 Maximum Retransmit Timeout (in ms) 0-1000 Minimum Acknowledgment Timeout (in ms) 0-6000 Maximum Acknowledgment Timeout (in ms) 0 TCP backoffs will never release call. 1-100 Number of TCP backoffs before terminating call.
AT Command Reference Results Returned Result Code Condition OK The values entered into the command were correct. ERROR Incorrect syntax, value out of range, or incorrect number of parameters $QCTCP: , , , ,, ,, , ? is used to query current setting.
Integrator’s Reference Manual Results Returned 6-74 Result Code Condition OK The requested operation was successful. ERROR If an illegal value is detected $QCVJ: ? Is used to query current value. $QCVJ: (0-1) =? is used to query acceptable range of parameters. 80-99208-1 Rev.
7I NTEGRATING GSP-1620 MODEMS INTO OEM PRODUCTS OEMs can buy QUALCOMM Globalstar GSP-1620 Satellite Data Modems in bulk direct from QUALCOMM, then integrate them into market-specific products. Bulk modems come with antennas, but not cables. As an OEM, you provide custom modem and antenna cables as appropriate to your specific products. You must also mount the modem boards in protective enclosures, which field technicians can then install on-site, connected to antennas.
Integrator’s Reference Manual ❑ • Positioning antennas for Globalstar service, and mounting and sealing antennas Environmental specifications for the GSP-1620 modem and antenna Caution For your safety and to avoid potential damage to the equipment, observe the Cautions and Warnings on page xxiv. Caution When integrating the GSP-1620 modem and its antenna into OEM products, be sure to abide by all RF restrictions as described in Appendix B.
Integrating GSP-1620 Modems into OEM Products Modem Mechanical Description The GSP-1620 modem is a sandwich made of two circuit card assemblies (CCAs) that are open and unprotected. As a result, the GSP-1620 modem must be shielded from direct impacts, precipitation, and particulates. I/O is obtained through four connectors: • Power, Data, and Control functions are accessed via a 25-pin “D” style connector.
Integrator’s Reference Manual Figure 7-1. GSP-1620 Modem Board Layout (Top View) 75.00 [2.95] 31.18 [1.228] 11.84 [.466] 190.00 [7.480] A 158.75 [6.250 ] 127.50 [5.019] A 7.28 [.287] A 37.51 [1.477] 7.27 [.286] Holes marked “ A” connect to chassis ground. 7-4 80-99208-1 Rev.
Integrating GSP-1620 Modems into OEM Products Figure 7-2. GSP-1620 Modem Board Layout (Side/ Bottom Views) 180.00 [7.087] 100.00 [3.937] 14.04 [.553] 17.16 [.676] 80-99208-1 Rev. D 6X ø 3.50 [.138] 67.00 [2.638] 5.00 [.197] 4.00 [.
Integrator’s Reference Manual Modem Dimensions and Weight Modem dimensions are 190 x 75 x 17 millimeters (7.48 x 2.95 x 0.68 inches). Modem weight is less than 180 grams (6.3 ounces). Modem Antenna Connectors The GSP-1620 modem has two (2) MCX snap-in connectors for the antenna leads, connecting the DRA antenna to the modem: Caution Caution • Transmit (Tx) lead is labeled J3. • Receive (Rx) lead is labeled J7.
Integrating GSP-1620 Modems into OEM Products Note The modem signal naming convention assumes that the modem is the DCE and that the user application is the DTE. DTR/DSR Signal and Power On/Off An active DTR on any of the three serial ports (Data, Control or Diagnostic) turns on the GSP-1620 modem (if DC power is applied first). The modem then boots up from the shut-down state and asserts DSR to indicate that it is booted up and ready to communicate.
Integrator’s Reference Manual Changing Data and Control Port Configuration You may change the Data and Control port configuration at any time, provided that the following requirements are met: • The minimum hold time for both asserting and de-asserting either port DTR is 10 milliseconds. • The minimum time from asserting DTR to data transmission is 10 milliseconds. If these minimum times are not observed, AT command processing may be affected.
Integrating GSP-1620 Modems into OEM Products The Control port is “enabled” by asserting DTR on the Control port. In case of a reboot (due to fatal errors or any other reason), the DSR line will be set inactive so that the user application can detect a reset condition and take the necessary action.
Integrator’s Reference Manual Table 7-1.
Integrating GSP-1620 Modems into OEM Products Table 7-1. Interface Connector Pinouts (continued) Pin Number Signal Name Signal Level Direction User <-> Modem Description 15 CP_DSR RS-232 DTE <- DCE This pin is the DSR for the Control port and is asserted when the modem detects activity on the Control port and is ready to communicate with the DTE over this port.
Integrator’s Reference Manual Table 7-1. Interface Connector Pinouts (continued) Pin Number Signal Name Signal Level Direction User <-> Modem Description 24 SPKR_N Analog Output from modem Analog speaker output (Reserved for Future Use) 25 MODULE_ RESET_N TTL Input to modem Hard reset of the modem, inverted logic. This line should be left floating for normal modem operation.
Integrating GSP-1620 Modems into OEM Products powering down the modem with this cable attached, you must set this switch to “POS 2” or “POS 3.” (“POS 2” and “POS 3” are functionally equivalent.) For more information about using the Diagnostic cable, see Connecting the Diagnostic Cable on page 2-7. Note For more information about the UTPST, see UTPST Overview on page 3-2. For more information about the Operation Monitor, see the QUALCOMM Globalstar Modem Operation Monitor User Guide (80-99399-1).
Integrator’s Reference Manual Table 7-2. Diagnostic Port Pinouts Pin Number Signal Name Direction User <-> Modem Description 1 Ground Ground return Ground return 2 DM_RXD Output from modem Diagnostic port RXD 3 DM_TXD Input to modem Diagnostic port TXD 4 DM_DTR_N Input to modem Diagnostic port DTR The DTR line has only one function: to turn on the modem when power is applied but no other device is connected. When DTR is asserted, the modem powers up immediately if power is provided.
Integrating GSP-1620 Modems into OEM Products DC Power The GSP-1620 modem requires input DC power ranging from 5.6 V to 16 V, with 1 Amp (maximum). The modem DC input power must be clean (maximum of 50 mV peak-peak ripple and noise) and must be within the absolute maximum voltage range of 5.6 V to 16 V under all conditions. For typical DC power consumption limits, see Power Consumption on page 7-16.
Integrator’s Reference Manual Caution You CANNOT have both a DC power supply and an AC adapter connected to the modem at the same time. This may cause the modem to fail to power up and may damage the modem. If you connect the Diagnostic cable to service-program the modem while using a DC power source, make sure the AC wall adapter of the Diagnostic cable is not plugged in to an AC outlet.
Integrating GSP-1620 Modems into OEM Products the DC power consumption of the ODU antenna’s receive section. Table 7-3. Modem DC Power Consumption Estimates at 12 V DC Input Mode Minimum Typical Maximum Shutdown 1.2 mW 2.4 mW 6 mW Standby 280 mW 500 mW 2.4 W Transmit 3.6 W 4.8 W 5.4 W The power modes in Table 7-3 are as follows: • Shutdown — The modem is not operational in this state and reverts to this state when DTR lines are inactive.
Integrator’s Reference Manual Power-Off Power-off is also controlled via the OR’d DTR signals. When all port DTRs have been de-asserted for a minimum of one second, the GSP-1620 modem begins its power-down sequence. After all software processing has concluded, the modem powers off. This causes loss of power to the Data and Control port RS-232 transmitters, de-asserting the ports’ DSR lines and informing the user it is safe to remove power.
Integrating GSP-1620 Modems into OEM Products shielded cable configuration in order to demonstrate compliance with the requirements. Your OEM application may need different grounding configurations. The options are as follows: Caution • Option 1 — A chassis ground connection to the modem may be established using conductive support posts/ screws between the modem mounting holes, where the solder mask is exposed on both sides of the board, and the OEM-provided chassis (metallic enclosure or base).
Integrator’s Reference Manual For hole size and locations, connector locations, and overall envelope dimensions, see Figure 7-1 on page 7-4 and Figure 7-2 on page 7-5. Caution Note When you mount the GSP-1620 modem into an enclosure or onto a surface, you must exercise care during the process. Adhere to the following recommendations: • Observe handling precautions necessary to avoid damage by ESD.
Integrating GSP-1620 Modems into OEM Products from time to time upon notice to the buyer. The product markings shall appear in a size and location reasonably agreed to by both parties. Figure 7-3 shows the QUALCOMM marking suitable for OEM enclosures (included on the Modem Integrator’s Kit CD as an Encapsulated PostScript [EPS] file). Figure 7-3.
Integrator’s Reference Manual Mounting Antennas On-Site This section describes the Dielectric Resonator Antenna (DRA, also called an Outdoor Unit or ODU) hardware, including specifications for antennas and antenna cable. It also describes how to calculate antenna cable length and mount antennas. Modem Antenna Specifications The GSP-1620 modem is to be used with an aluminum Dielectric Resonator Antenna (DRA), as shown in Figure 7-4 and Figure 7-5.
Integrating GSP-1620 Modems into OEM Products Figure 7-5. DRA View Showing Connectors O-Ring groove RX Antenna connector (labeled on antenna base) TX Antenna connector (labeled on antenna base) Antenna Dimensions and Weight The DRA antenna is 103 millimeters diameter by 63 millimeters tall (4.1 inches diameter by 2.5 inches tall). The weight for the antenna is less than 250 grams (8.8 ounces).
Integrator’s Reference Manual Figure 7-6. DRA Top and Side Views 7-24 80-99208-1 Rev.
Integrating GSP-1620 Modems into OEM Products 22.00 mm [.866] 23.50 mm [.925] 44.00 mm [1.732] Figure 7-7. DRA Bottom View and Mounting Hole Locations 6X M4.0 X 10.00 DEEP 38.11 mm [1.500] Antenna Cable Specifications The DRA antenna requires two (2) cables, one for transmit and one for receive: 80-99208-1 Rev. D • The required connectors are plug SMA (DRA bulkhead) to plug MCX (modem). • Transmit cable maximum 0.6 dB insertion loss @ 1618 MHz is required for the cable.
Integrator’s Reference Manual QUALCOMM does not provide cables for OEM bulk applications since OEMs may need cables of different lengths for particular applications. Table 7-4 lists potential suppliers of RF and microwave connectors and cable assemblies. Table 7-4. Suggested RF Cable and Connector Suppliers Volex Inc.: Company: Volex Inc. 1 Batterymarch Park, Quincy, MA 02169 USA Tel: +1 617 376-0555 Fax: +1 617 376-0590 Email: jim_stout@volexna.com Web: http://www.volex.
Integrating GSP-1620 Modems into OEM Products Calculating Antenna Cable Length The maximum loss for an antenna cable of any length is 0.6 dB at 1.6 GHz for modem transmit and 3 dB at 2.5 GHz for modem receive. You must take these losses into account when calculating antenna lengths for a GSP-1620 modem installation. For example, the GSP-1620 Modem Integrator’s Kit utilizes three feet of LMR 195 cable, which has a loss of 0.6 dB at 1.6 GHz.
Integrator’s Reference Manual Note Globalstar frequencies are attenuated by wet snow. When mounting the antenna in a snowy location, you must make provisions to prevent snow buildup on the antenna. Wet ice/snow must be restricted to a maximum thickness of 20 centimeters (8 inches) by suitably mounting the antenna. See Mounting and Sealing Antennas on Poles on page 7-29. Securing Antenna Cables When connecting the antenna cables, the recommended torque for the SMA connectors is 0.79 to 1.
Integrating GSP-1620 Modems into OEM Products Instead, you should fill the groove on the antenna, which is normally used for the O-ring, with an adhesive caulking material that can bond to the aluminum antenna base and the surface to which you are mounting the antenna. The caulk seals out moisture and dirt. Tip For extra protection on either flat or rough surface mounts, you can coat the antenna’s SMA connectors before sealing the antenna base; for details, see Mounting and Sealing Antennas on Poles.
Integrator’s Reference Manual Environmental Specifications This section describes environmental specifications for both the QUALCOMM Globalstar GSP-1620 Satellite Data Modem and its Dielectric Resonator Antenna (DRA). The environmental requirements specified herein are under development and are subject to change without notice. GSP-1620 Modem Environments Environments affecting the GSP-1620 modem include temperature/humidity, thermal radiation, altitude, vibration, mechanical shock, and acoustic noise.
Integrating GSP-1620 Modems into OEM Products Figure 7-8. GSP-1620 Modem Temperature/Humidity Envelope 90 85 80 NON-OPERATIONAL ONLY 70 DRY BULB TEMPERATURE (degrees C) CONSTANT 39.
Integrator’s Reference Manual Altitude Operational The GSP-1620 modem operates at standard atmospheric pressure altitudes between 0 and 15,000 meters (50,000 feet). Non-operational The GSP-1620 modem operates as specified after storage at pressure altitudes ranging from 0 to 15,000 meters (50,000 feet). Vibration Operational - Random The GSP-1620 modem operates as specified during exposure to the random vibration spectrum defined in Figure 7-9.
Integrating GSP-1620 Modems into OEM Products Figure 7-9. GSP-1620 Modem Random Vibration Spectra -1 -2 NON-OPERATIONAL SPECTRUM 7.69 Grms -3 OPERATIONAL SPECTRUM 0.51 Grms 2 Acceleration Spectral Density (G /Hz) 10 10 10 10 10 -4 -5 10 1 Table 7-5. 100 1000 Frequency (Hz) Swept Sine Vibration Definition Double Amplitude Displacement (inch) Acceleration (Gs) 0.28 Operational Operational * Frequency Range (Hz) 2 to 6 0.5 0.59 Non- 10000 6 to 500* 2 to 8 2.04 8 to 200 4.
Integrator’s Reference Manual Mechanical Shock Operational The GSP-1620 modem operates as specified while being subjected to a half sine pulsed acceleration wave form of 11 milliseconds in duration, 2 Gs peak. Non-Operational The GSP-1620 modem operates as specified after being subjected to a half sine pulsed acceleration wave form of 6 milliseconds in duration, 30 Gs peak. Acoustic Noise The GSP-1620 modem is sensitive to very high ambient noise levels.
Integrating GSP-1620 Modems into OEM Products RF Connector Durability The GSP-1620 modem RF connectors meet all performance requirements after 500 connect/disconnect cycles at a maximum rate of 12 cycles per minute. Materials The GSP-1620 modem is manufactured of non-nutrient materials with respect to fungal growth. Shipping The GSP-1620 modem as packaged for shipment meets the pre-shipment test procedures specified in the National Safe Transit Association, Project 1A.
Integrator’s Reference Manual Non-Operational The DRA operates as specified after exposure to the operational and non-operational temperature/humidity envelopes shown in Figure 7-10. Thermal Radiation The temperature profile shown in Figure 7-10 includes temperature rise due to thermal radiation, solar radiation, and other heat loads. Figure 7-10.
Integrating GSP-1620 Modems into OEM Products Icing/Freezing Rain/Snow Any ice or freezing rain on the radome of the ODU will cause degraded performance. Steps must be taken to ensure that ice formation is kept to a minimum on the ODU. Globalstar frequencies are attenuated by wet ice and snow and OEMs must make provisions (such as installing the antenna on a pole) to prevent snow buildup on the antenna.
Integrator’s Reference Manual Figure 7-11. DRA Random Vibration Spectrum 1.00 0.80 ACCELERATION SPECTRAL DENSITY (G2/Hz) 0.60 0.50 0.40 0.30 0.20 0.10 OPERATIONAL AND NON-OPERATIONAL SPECTRUM 15.6 Grms 0.08 0.06 0.05 0.04 0.03 0.02 0.01 1 10 100 1,000 10,000 FREQUENCY (Hz) Mechanical Shock Operational The DRA operates as specified while being subjected to a half sine pulsed acceleration waveform of 6 milliseconds in duration, 30 Gs peak.
Integrating GSP-1620 Modems into OEM Products RF Connector Durability The DRA RF connectors meet all performance requirements after 500 connect/disconnect cycles at a maximum rate of 12 cycles per minute. Materials The DRA is manufactured of non-nutrient materials with respect to fungal growth. Shipping The DRA as packaged for shipment meets the pre-shipment test procedures specified in the National Safe Transit Association, Project 1A. 80-99208-1 Rev.
Integrator’s Reference Manual 7-40 80-99208-1 Rev.
8T ROUBLESHOOTING If you are having a problem with a QUALCOMM Globalstar GSP-1620 Satellite Data Modem, try the troubleshooting tips in Table 8-1. If that does not solve the problem, you can contact QUALCOMM Globalstar Customer Service, as described in Appendix D. Table 8-1. Troubleshooting Modem Problems Problem Possible Solutions AT$QCSTATUS command returns RSSI: 0 ■ -or- ■ DTE application determines, after a service alert, that there is no Globalstar signal.
Integrator’s Reference Manual Table 8-1. Troubleshooting Modem Problems (continued) Problem Possible Solutions The modem does not seem to be getting power, even though it is plugged in. ■ ■ 8-2 Both the AC power connector on the diagnostic cable and the DC power connector on the interface cable are plugged in. Only one can be used at a time. DTR is not asserted on a serial port. Connect one of the modem’s serial ports (Data, Control, or Diagnostic).
AG LOBALSTAR BACKGROUND Globalstar is a voice and data telecommunications system utilizing a constellation of 48 low-Earth-orbit (LEO) satellites, providing nearly world-wide coverage (70 o N to 70o S latitudes).
Integrator’s Reference Manual Space Segment The space segment consists of 48 LEO satellites (and eight additional in-orbit spares) built by Loral Space Systems and operated by Globalstar Limited Partnership (GLP) in San Jose, CA.
Globalstar Background Figure A-1. Globalstar Coverage Availability 80-99208-1 Rev.
Integrator’s Reference Manual The map and list in Figure A-1 depict current and planned Globalstar service coverage. Actual coverage may vary because of Gateway deployment, local licensing and other factors, including environmental conditions. “Service” means that a phone can be purchased and activated in that country.
Globalstar Background Distributors and OEMs for User Terminals Customers access the Globalstar system by means of User Terminals, either QUALCOMM Globalstar GSP-1600 Tri-Mode Phones, or QUALCOMM Globalstar GSP-1620 Satellite Data Modems. 80-99208-1 Rev. D • For Tri-Mode Phones, cellular and satellite distributorships serve as retail sales conduits where customers can purchase, provision, and repair Tri-Mode Phones throughout the world.
Integrator’s Reference Manual A-6 80-99208-1 Rev.
B RF C ERTIFICATION/RESTRICTIONS This appendix discusses certification compliance for the QUALCOMM Globalstar GSP-1620 Satellite Data Modem as well as restrictions relating to RF, RF exposure, and electronic devices. Certification The QUALCOMM Globalstar GSP-1620 Satellite Data Modem, antenna, and cabling as supplied by QUALCOMM Incorporated shall be compliant with the following International standards when configured in accordance with the QUALCOMM recommendations.
Integrator’s Reference Manual QUALCOMM Incorporated does not accept any responsibility for regulatory compliance of the OEM product. It is the responsibility of the OEM manufacturer to ensure that all regulatory requirements (e.g., FAA, Hazardous Location) have been met for the specific application.
RF Certification/Restrictions RF Restrictions The GSP-1620 modem must be used with the QUALCOMMprovided antenna, and no modification to the RF transmit or receive path is permitted in the form of amplifiers. QUALCOMM Incorporated must be consulted before any changes can be made in the RF path, including cable length deviations from the QUALCOMM-provided or recommended cabling. Failure to do so may result in non-compliance with the Globalstar communications network and Government Radio Regulations.
Integrator’s Reference Manual • ICNIRP (1996) [International Commission on Non-Ionizing Radiation Protection] • IRPA (1991) [International Radiation Protection Association] The GSP-1620 modem is designed to comply with the established ANSI, FCC, and international safety standards for safe levels of human exposure to RF energy. Maintaining a minimum line-of-sight separation distance of 21.5 centimeters (8.
RF Certification/Restrictions For a wireless modem, which has a higher power output than a wireless phone, the distance must be increased. For a GSP-1620 modem, a minimum separation distance of 22.67 centimeters (9 inches) should be maintained between the transmitting modem antenna and all pacemakers. These recommendations are consistent with the independent research by and recommendations of Wireless Technology Research, L.L.C.
Integrator’s Reference Manual B-6 80-99208-1 Rev.
CW ARRANTY The warranty for the QUALCOMM Globalstar GSP-1620 Satellite Data Modem and GSP-1620 Modem Integrator’s Kit (MIK) will be as provided for in the Supply Agreement. 80-99208-1 Rev.
Integrator’s Reference Manual C-2 80-99208-1 Rev.
DP RODUCT SUPPORT This appendix provides support information for the QUALCOMM Globalstar GSP-1620 Satellite Data Modem hardware and software. It contains a description of the support available from QUALCOMM Globalstar Customer Service and how to contact the Technical Support and Order Fulfillment teams.
Integrator’s Reference Manual Contact Technical Support for any Satellite Data Modem related issue, including when you need to: • Troubleshoot a problem. • Inquire about a software or hardware upgrade. • Report a documentation issue. • Request a Return Material Authorization (RMA). • Find out the status of a technical issue or of an RMA. • Follow a procedure that requires Technical Support direction.
Product Support Website Information The QUALCOMM Customer Service Website is located at http://www.gstechsupport.qualcomm.com . Only registered customers may use the QUALCOMM Customer Service Website. For details on registering, go to the login page of the Website, click “Website Registration,” then follow the instructions to become a registered user.
Integrator’s Reference Manual Contact information • Website The following Website address is available to registered users. Forms are available for submitting Technical Support issues and RMA requests. http://www.gstechsupport.qualcomm.com • Phone +1 858 651 4911 • ❑ Select 1 for Globalstar Gateway Products. ❑ Select the appropriate option for RMA or Technical Support troubleshooting assistance. Email The following email addresses are available to registered customers. ❑ gstechsupport@qualcomm.
Product Support The following email address is available to all customers. ❑ gs.modules.info@qualcomm.com Obtain answers for all product information questions by sending an email to this address. • Facsimile (FAX) +1 858 651 2345 Submit technical support issues and new RMA requests to this facsimile number. Be sure to provide your name, company, location, telephone number, description of the problem, part information, and details about the error messages and/or log information. 80-99208-1 Rev.
Integrator’s Reference Manual D-6 80-99208-1 Rev.
ES PECIFICATION SUMMARY This appendix summarizes the specifications for the QUALCOMM Globalstar GSP-1620 Satellite Data Modem and its Dielectric Resonator Antenna (DRA). For further discussion of hardware issues, see Chapter 7, Integrating GSP-1620 Modems into OEM Products. Table E-1. Specification Summary — GSP-1620 Modem Operating Frequencies Transmit: Receive: Maximum Transmit Power +26 dBm EIRP (0.4 W) DC Input Voltage +5.
Integrator’s Reference Manual Table E-1. Specification Summary — GSP-1620 Modem Antenna Cable (not included) Two cables required: transmit and receive Male SMA to Male MCX Transmit cable maximum 0.6 dB insertion loss @ 1618 MHz Receive cable maximum 3.0 dB insertion loss @ 2492 MHz Certification FCC CE Modem Environmental Conditions Operating: Storage: Relative Humidity: -30 °C to +60 °C -40 °C to +85 °C 5% to 95% (under 40 °C) The data modem is sensitive to very high ambient noise levels.
Specification Summary Table E-2. Specification Summary — Dielectric Resonator Antenna (DRA) Parameter TX Specification RX Specification Frequency Range (MHz) 1610.0-1626.5 2483.5-2500.0 Polarization LHCP LHCP VSWR (50 ohm) <2.0:1 <2.0:1 Isolation (TX→RX) (dB) >40 >0 Maximum Gain < 6.5 – (0°<θ<80°) (dBic) [1] Average Gain >1.5 (0°<θ<80°) (dBic) Minimum Gain >-4.0 (0°<θ<80°) (dBic) Maximum Axial Ratio >1.5 (passive antenna) >-4.0 (passive antenna) <3.0 <3.
Integrator’s Reference Manual Table E-2. Specification Summary — Dielectric Resonator Antenna (DRA) (continued) Parameter TX Specification RX Specification Connector SMA (F) SMA (F) Dimensions 103 mm (4.1 in) diameter by 63 mm (2.5 in) tall Weight < 250 g (8.8 ounces) [1] q = 0 is zenith. [2] combined LNA and Filter over the operating temperature [3] at Tsky = 200 K [4] random, 3-axis, over 15 – 2000 Hz E-4 80-99208-1 Rev.
INDEX Symbols +++ escape sequence 4-5, 5-10, 5-11, 5-37, 6-40 A A/ 6-19 AC adapter 2-7, 2-12, 2-13 acknowledgment timer 6-70 acoustic noise 7-19, 7-34 acquisition 5-20, 6-61 active ports 5-9, 5-15 airtime 3-1, 5-6, A-4 alerts Globalstar service 5-19, 6-61 SMS 6-57 altitude 7-32, 7-37, E-3 ambient noise E-2 Analog Microphone Input 7-11 ANSI/IEEE C95.
Integrator’s Reference Manual overview 1-2, 5-4 using with packet data 5-34, 6-50 AT 2-17 AT command processor 5-9, 5-13 AT commands affecting ports 5-13 alphabet 6-7 asynchronous data Gateway IWF 6-41 basic 6-8 basic action 6-18 case sensitivity 6-7 command line format 6-7 configuration parameters 5-9 dormant mode 6-48 error log services 6-59 extended configuration 6-32 Globalstar S-registers 6-31 non-operational 6-6 Online-Command mode 6-40 operational 6-2 overview 6-7 prefix 6-19 protocol stack modifica
Index AT+IPR? 2-17 AT+MS 6-47 ATA 5-33, 6-18 ATD 5-10, 5-11, 6-20 ATD#777 4-4, 5-10, 5-11, 5-27, 5-32 ATE 6-9 ATH 4-5, 5-10, 5-11, 5-12, 5-25, 5-27, 5-32, 5-36, 6-22 ATH+CTA 5-25 ATH777 5-25, 5-26, 5-27 ATI 6-9 ATL 6-10 ATM 6-11 ATO 5-10, 5-13, 6-23 ATP 6-11 ATQ 6-12 ATS0 6-25 ATS10 6-30 ATS11 6-31 ATS3 6-25 ATS4 6-26 ATS5 6-27 ATS6 6-27 ATS7 6-28 ATS777 6-31 ports affected 5-14 ATS8 6-29 ATS9 6-29 ATT 6-13 attenuation, by snow 7-28, 7-37 ATV 6-13 ATX 6-14 ATZ 6-15 call modes 6-69 ports affected 5-14 auto
Integrator’s Reference Manual shields 7-18 suppliers 7-26 CALL DURATION 4-3, 6-64 NUMBER 4-3, 6-64 STATE 4-3, 6-64 TYPE 4-3, 6-64 call Detail Record 5-25 history 6-21 mode, modem 6-69 Caller ID 5-28 CALLINPROG 6-64 calls answering with Data and Control ports 5-29 answering with Data port 5-28 asynchronous data 5-30 Loopback 4-3, 5-15, 6-21 Markov 4-3, 5-15, 6-21 mobile-originated asynchronous 5-32 packet data 5-27 mobile-terminated asynchronous 5-33 packet data 5-27 packet data 4-3, 6-21 special test 5-15
Index J3 2-6, 7-3, 7-6 J7 2-6, 7-3, 7-6 MCX 7-25 baud rate 2-17 changing configuration 7-8 HyperTerminal settings 2-15 modem 7-3 modem antenna 7-6 RF durability 7-35, 7-39 line speed 7-6 making calls from 4-4 signals 7-9 Rx 2-6, 2-9, 7-22 SMA 7-25, 7-29 Tx 2-6, 2-9, 7-22 constellation, Globalstar A-1 Control port 5-7, 7-6 active 5-10 active only 5-9 baud rate 2-17 changing configuration 7-8 HyperTerminal settings 2-15 line speed 7-6 signals 7-8 coverage A-2 CP_ signals 7-10 CTS 5-8, 7-9, 7-14 Customer
Integrator’s Reference Manual developing modem applications 5-1 Diagnostic cable 2-7, 7-12 connecting for UTPST 3-2 switch box 2-7, 7-12 port 2-9, 5-16, 7-12 pinouts 7-13 dial command 6-20 string values 6-21 valid 6-20 DTE 1-5, 5-7, 6-1 Data Terminal Ready Behavior 5-14, 6-16 DTMF Tone Duration and Spacing 6-31 tones 6-13, 6-31 DTR 5-8, 5-10, 5-28, 7-8, 7-14 asserted 2-7, 5-9, 5-16, 7-12 on Control port 5-29 on Data port 5-28, 5-29 on Diagnostic port 5-28 tone 6-14 Dial Number 5-33, 5-35 Dial-Up Network
Index emissions 1605 7-29 problems 2-9 enclosures 7-19, B-1 metallic 7-18 QUALCOMM mark on 7-20 regulatory labels on 7-21 environmental specifications antenna 7-35, E-2 modem 7-30, E-2 ERROR 6-9 error control 6-46 log clearing 6-60 getting 6-59 services commands 6-59 Error Control Selection Command 6-45 ESD 2-2, 2-19, 7-6, 7-20 and Diagnostic port 7-13 damage to modem 7-15 ESN 6-34 ETSI 7-16 European R&TTE Directive B-2 Union 7-18, 7-21 extended configuration AT commands 6-32 extending cables 2-5, 2-9 F f
Integrator’s Reference Manual Globalstar Air Interface 5-16 background information A-1 Communications System 1-2 coverage A-2 Customer Service D-1 Data User Guide 1-8 ground segment A-2 Home Gateway Channel 3-5 Gateway ID 3-5 Service Provider Mobile Country Code 3-6 Service Provider Mobile Network Code 3-6 IMSI 3-5 Limited Partnership (GLP) A-1 satellite paths 7-27 service 4-2, 5-16 system 3-1 service 4-2 alerts 5-19 signal 4-1 specifications E-1 User Terminal 3-2 UT Program Support Tool, see UTPST UTPST S
Index HyperTerminal 2-15, 5-2 checking modem status 4-2 making calls 4-4 setting up 2-15 IWF 5-8 commands 6-41 Gateway 6-41 modem 5-30, 6-14, 6-18, 6-27, 6-28, 6-29, 6-30, 6-31 I modulation capabilities 6-47 ice 7-29, 7-37 ICNIRP (1996) B-4 IDLE 6-64 idle timer 5-25, 6-49 impacts 7-3 impedance 7-15 IMSI 3-5, 5-24, 5-30 in-band control data 5-12, 5-27, 5-32 INDEX, SMS 6-54 initialization strings 5-36 insertion loss 2-9 Interface connector pinouts 7-9 interface connector summary E-1 interference, antenn
Integrator’s Reference Manual Markov call 4-3, 5-10, 5-11, 6-21 DTR behavior 5-15 statistics 6-68 MARKOV call type 6-64 MCC 3-5, 3-6 MCX connectors 1-7, 7-3, 7-6, 7-25 mechanical shock 7-34, 7-38 medical devices B-5 medium-Earth-orbit satellites A-2 MIK, see Modem Integrator’s Kit MNC 3-5, 3-6 Mobile Country Code 3-5 Network Code 3-5 Satellite System 5-16 mobile-originated calls asynchronous 5-32 packet data 5-27 mobile-terminated calls answering with SMS 5-18 asynchronous 5-33 packet data 5-27 MODEL 6-10
Index MPE B-4 MSIN 3-5 MSS 5-16 multiplexing, packet data 6-32 MULTITONE 6-64 MUX 6-32 Online mode 4-5, 5-12 entering from Online-Command mode 5-13 returning to 6-23 Online-Command mode 4-5, 5-10, 5-11, 5-12, 6-40 echoing 6-9 N entering from Online mode 5-12 terminating data calls 5-12 National Safe Transit Association 7-35, 7-39 NCRP Report 86 B-3 negotiation 6-43 networking software 5-22 NO ANSWER 6-22 NO CARRIER 5-11, 6-19, 6-21, 6-24 NO DIALTONE 5-10, 6-21 NO_MODE 6-63 noise, ambient E-2 noise, R
Integrator’s Reference Manual Pause Before Blind Dialing Time 6-27 pauses, during dialing 6-29 periodic application 5-6 Perl 5-2 phone book entries 6-21 pinouts Diagnostic port 7-13 interface connector 7-9 pipe, for data 5-19 pipelines 5-6 PLS, see Position Location Service polarization, antenna E-3 pole-mounting antennas 7-29 ports activation changes during operation 5-15 active 5-9, 5-13 affected by AT commands 5-13, 5-14 arbitration 5-9 behavior 5-10 configuration 5-8, 5-9 configuration and SMS 5-17 dur
Index REGISTRATION 4-3, 6-63 registration, Gateway 5-30 regulatory labeling 7-21 requirements 7-21 Repeat Last Command 6-19 re-programming service parameters 3-4 RESELECTION_NEXT 6-63 RESET 2-4 lead 2-18, 7-7 Reset to Default Configuration 5-14, 6-15 resetting modem 2-18, 7-18 resistors 7-19 Response Formatting Character 6-26 Result Code Selection Command 6-14 Suppression 6-12 result codes 6-13 common S-register 6-24 selection 6-14 retransmit timer 6-70 Retrieve Error Log 6-59 Return to Online Data Mode 6-
Integrator’s Reference Manual Select Pulse Dialing 6-11 setting up dormant mode 5-25 Tone Dialing 6-13 SELF TEST 2-16 separation distance B-4 serial port 6-35 server DNS 5-30 host 5-4, 5-6, 5-23, 5-24, 5-30, HyperTerminal 2-15 SETUP_ORIG 6-64 SETUP_TERM 6-64 shipping 7-35, 7-39 shock mounts 7-20, 7-32, 7-33, E-2 Short Messaging Service, see SMS short-circuits 7-6, 7-13 SHUTDOWN 6-63 shutdown mode 7-17 SIG GND 2-4 signal fading E-2 5-33, 5-35 service alerts 5-19, 6-61 degradation 5-4 programming 3-1, 7-
Index mobile-terminated 5-17 calls 5-18 Move/Delete 6-51 port configuration 5-17 Print 6-52 printing current message 6-52 sample script 5-19 traversing message list 6-51 SMS Lock 6-56 snow 7-28, 7-29, 7-37 SOFT_RESET 6-63 software version, determining 3-8 solar radiation 7-31, 7-36 solder mask 7-19 SP, see service providers 3-1 SPC 3-3 speaker loudness 6-10 on/off 6-11 special calls and services 6-64 specifications antenna 7-22, E-3 antenna cable 7-25 environmental 7-30, 7-35 modem E-1 summary E-1 S-regist
Integrator’s Reference Manual tools, recommended development 5-2 traffic channel 5-8, 5-25 transmit mode 7-17 section, antenna 7-22 troubleshooting 8-1 TTL levels 7-13 Tx connector 2-6, 2-9, 7-22 TxD 5-8, 7-8, 7-9, 7-14 U Um interface 5-8, 6-49 UNIX computers 5-22 upconverters 1-7 upgrading software 3-7 Use Van Jacobsen Header Compression 6-73 user interface, modem 7-6 User Terminals 3-2, A-2 distributors A-5 UTPST connecting to modem 3-2 installing and running 3-3 overview 3-2 Scripting API 3-7 VPN 5-5,
