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NAL A3LA-R-SMA User Manual

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451-93156-001A
Model A3LA-R User Guide
Version A
April 19, 2022
Copyright © 2021 by NAL Research Corporation
11100 Endeavor Ct., Suite 300
Manassas, Virginia 20109 USA
Phone: 703-392-1136
connected
Email: contact@nalresearch.com

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  • Page 1 451-93156-001A Model A3LA-R User Guide Version A April 19, 2022 Copyright © 2021 by NAL Research Corporation 11100 Endeavor Ct., Suite 300 Manassas, Virginia 20109 USA Phone: 703-392-1136 connected Email: contact@nalresearch.com...
  • Page 2 Product (including hardware, software and/or firmware) and/or the Iridium satellite to the fullest extent these damages may be disclaimed by law and whether advised of the possibilities of such damages. NAL Research is not liable for any claim made by a third party or made by you for a third party.
  • Page 3 A3LA-R User Guide Version A EVISION ISTORY Revision Date Description 04/08/2013 Initial version 07/14/2021 Updated to new template; proofread. 04/19/2022 Formal release Document Number: 451-93156-001A 3 of 158...
  • Page 4 A3LA-R User Guide Version A EFERENCE OCUMENTS The latest revisions of the NAL documents are available from the NAL Research website at https://www.nalresearch.com/support/documentation-downloads/. Reference Title Revision/Date A3LA-R Product Information Getting Started With Model A3LA-R (TN2012-11-V1.0) Version 1.0, 2012 SatTerm Software Manual (451-94000-001A)

  • Page 5: Table Of Contents

    A3LA-R User Guide Version A ABLE OF ONTENTS Introduction ....................... 16 Multi-Interface Connector ..................17 RS232 Data Interface (Standard 9-Wire Configuration) ............. 18 RS232 Data Interface (3-Wire Configuration) ..............18 DC Power Input ........................19 Power On/Off Control ......................20 Audio Interface ........................
  • Page 6 A3LA-R User Guide Version A Wn – Error Correction Message Control ................37 Zn – Soft Reset ........................37 B.10 &Cn – DCD Option ....................... 37 B.11 &Dn – DTR Option ....................... 37 B.12 &Fn – Restore Factory Settings ................... 38 B.13 &Kn –...
  • Page 7 A3LA-R User Guide Version A B.40 +CMGW – Write SMS Message To Memory ............... 52 B.41 +CMOD – Call Mode ......................53 B.42 +CNMI – New SMS Message Indications to DTE ..............53 B.43 +COPS – Operator Select ....................55 B.44 +CPBF –...
  • Page 8 A3LA-R User Guide Version A B.71 –MSVTS – DTMF Generation in Voice Call ................71 B.72 –MSVTR – DTMF Received in Voice Call ................72 B.73 –MSVLS – Local DTMF Feedback Selection ................. 72 B.74 –MSSTM – Request System Time ..................73 B.75 –MSGEO –...
  • Page 9 A3LA-R User Guide Version A B.103 +SBDWT – Short Burst Data: Write a Text Message ............94 B.104 +SBDDET – Short Burst Data: Detach .................. 95 B.105 +SBDI – Short Burst Data: Initiate an SBD Session .............. 96 B.106 +SBDIX[A] – Short Burst Data: Initiate an SBD Session Extended ........98 B.107 +SBDDSC –...
  • Page 10 A3LA-R User Guide Version A Unit Identification ......................133 Setting the Default Configuration ..................133 Power on to Send an SBD Message .................. 134 SBD Automatic Notification Registration ................135 SBD Automatic Notification Message Reception .............. 135 SBD Automatic Notification Automatic Registration ............136 Originate a Data Call ......................
  • Page 11 A3LA-R User Guide Version A ABLE OF IGURES Figure 1: Iridium Satellite Modem A3LA-R ................... 16 Figure 2: Power Input Setting for the A3LA-R ................20 Figure 3: Location of the SIM Reader ................... 22 Figure 4: Location of the SIM Reader ................... 25 Figure 5: Iridium Satellite Modem A3LA-R ...................
  • Page 12 A3LA-R User Guide Version A ABLE OF ABLES Table 1: Pin Assignments for the Multi-interface Connector ............17 Table 2: General RF Parameters ....................23 Table 3: Custom Antenna Specifications ..................23 Table 4: Numeric and Verbose Modes ..................35 Table 5: Standard S-Registers .....................
  • Page 13 A3LA-R User Guide Version A LOSSARY ASCII ......American Standard Code for Information Interchange AT .......Two-letter sequence starting a string of terminal commands. The AT is intended to get the terminal’s attention prior to executing a command. BIS ......Bureau of Industry and Security bps ......bits per second CE .......Conformité...
  • Page 14 A3LA-R User Guide Version A GPS ......Global Positioning System GSM ......Global System for Mobile Communications GSS ......Gateway SBD Subsystem IMEI ......International Mobile Equipment Identification I/O ......Input / Output IRLP ......Iridium Radio Link Protocol IP ........Internet Protocol IP67 ......Ingress Protection 67 ISU ......Iridium Subscriber Unit (modems, phones, trackers) kbps ......kilobits per second LAN ......local Area Network...
  • Page 15 A3LA-R User Guide Version A RUDICS .......Router-based Unrestricted Digital Internetworking Connectivity Solution SatTerm ......Satellite Terminal emulator software SBD ......Short Burst Data SIM ......Subscriber Identification Module SM ......Short Message SME ......Short Message Entity SMS ......Short Message Service SMS-PP .......Short Message Service—Point to Point TCP ......Transmission Control Protocol TDD ......Time-Division Duplex TDMA ......Time-Division Multiple Access...

  • Page 16: Introduction

    DB25 Multi-Interface Connector Figure 1: Iridium Satellite Modem A3LA-R IMPORTANT: Do not disassemble the A3LA-R for repair or services. The warranty is voided if the A3LA-R is disassembled. Return to NAL Research for any services. Document Number: 451-93156-001A 16 of 158...

  • Page 17: Multi-Interface Connector

    A3LA-R User Guide Version A ULTI NTERFACE ONNECTOR The multi-interface connector is a male 25-pin miniature D-Sub type (see Figure 1) that includes five interfaces—RS232, DC input power, ON/OFF control line, analog audio, and Digital Peripheral Link (DPL). The multi-interface connector pin assignments are summarized in Table 1, which is ‘pin-to-pin’.

  • Page 18: Rs232 Data Interface (Standard 9-Wire Configuration)

    A3LA-R User Guide Version A Table 1: Pin Assignments for the Multi-interface Connector Pin # Signal Description Interface DA_RX PCM digital audio input Digital Audio SIGNAL GND Signal ground, 0 V signal reference and return RS232 D NTERFACE TANDARD ONFIGURATION The A3LA-R supports a standard RS232 data interface to a DTE incorporating hardware handshaking and flow control.

  • Page 19: Dc Power Input

    A3LA-R User Guide Version A 2. Disconnect the (Clear To Send) CTS, (Data Carrier Detect) DCD, DSR, DTR, Request To Send (RTS), and Ring Indicator (RI) lines between the DTE and modem. 3. Set AT&Dn to AT&D0 to ignore the DTR input from the DTE. 4.

  • Page 20: Power On/Off Control

    A3LA-R User Guide Version A peak current demand. Appendix F: Power Consumption provides the electrical power profile of the A3LA-R. The A3LA-R accepts either +4.0 V to +5.5 V or +5.0 V to +32 V input. The A3LA-R is shipped with hardware set for +5.0 V to +32 V input.

  • Page 21: Audio Interface

    A3LA-R User Guide Version A may not operate and the A3LA-R could be placed in a non-operational state. The state is not permanent and can be rectified by the above procedure. The EXT_ON_OFF pin can be connected to an external I/O control line to turn a powered A3LA-R on and off in a toggle fashion.

  • Page 22: Digital Peripheral Link (Dpl)

    A3LA-R User Guide Version A A3LA-R Modem DPL Handset HRC-24-8R Data Kit Figure 3: Location of the SIM Reader (DPL) IGITAL ERIPHERAL The DPL interface is composed of two ports—a full duplex asynchronous serial link for control messages and a PCM digital audio link for audio traffic. The protocol used on these ports is made available to application developers only on a case-by-case basis and after appropriate non-disclosure agreements and/or license agreements are executed.

  • Page 23: Antenna Connector

    Oscillator Stability ± 1.5 ppm NAL Research offers several types of antennas for use with the A3LA-R modem. These antennas include the fixed mast, mobile magnetic/permanent mount, and portable auxiliary. For low cost and applications where small form factor and light weight are required, NAL Research recommends model SYN7391-C.
  • Page 24 A3LA-R User Guide Version A 2. Each bar represents a 2 dB increment. 3. Multiple ring channels can be present at the same time, so units can lock to different signals. 4. If the reading is near the decision threshold, it would be easy to see a 1-bar difference. Document Number: 451-93156-001A 24 of 158...

  • Page 25: Sim Card Interface

    A3LA-R User Guide Version A 4 SIM C NTERFACE The A3LA-R modem contains an integrated Subscriber Identification Module (SIM) reader. The modem uses and requires an Iridium SIM chip for operation. The SIM chip is inserted into the opening located at the top of the modem, as shown in Figure 4. A plastic locking mechanism is used hold the SIM in place.

  • Page 26: Led Display

    A3LA-R User Guide Version A 5 LED D ISPLAY The A3LA-R has a status LED depicted as P for power indicator (see Figure 5). It provides a quick visual check to ensure power is provided to the modem. Power LED Figure 5: Iridium Satellite Modem A3LA-R Document Number: 451-93156-001A 26 of 158...

  • Page 27: Configuration Settings

    A3LA-R User Guide Version A ONFIGURATION ETTINGS The A3LA-R allows users to configure its data port communication parameters. The three configuration types are active, factory default, and stored.  The active configuration is the set of parameters currently in use. They can be changed by individually via specific AT commands.

  • Page 28: Modes Of Operation

    A3LA-R User Guide Version A ODES OF PERATION The A3LA-R serial data port is always in one of three modes: command mode, SBD data mode, or SBD session mode. When the data port is in command mode, AT commands can be entered to control the A3LA-R.

  • Page 29: Mounting Recommendations

    A3LA-R User Guide Version A OUNTING ECOMMENDATIONS The A3LA-R has four features on its bottom surface that can aid in its mounting (see Appendix L: Mechanical Drawing). These four features are predrilled at a minimum depth of 0.25 inch to accept 6-32 thread type.

  • Page 30: Technical Support

    For technical support, please contact us at: Phone: 703-392-1136, x203 Fax: 703-392-6795 Email: contact@nalresearch.com Technical documents are also available to download on NAL Research’s website www.nalresearch.com in the Support > Documentation & Downloads section. Document Number: 451-93156-001A 30 of 158...

  • Page 31: Appendix A: At Interface

    A3LA-R User Guide Version A A: AT I PPENDIX NTERFACE OMMAND YPES The A3LA-R employs two principal types of AT commands: basic and extended. The two types have differing syntax used to query and adjust their settings. They also have unique reference standards.
  • Page 32 A3LA-R User Guide Version A designed specifically for Iridium products include a –MS prefix. Most extended commands include three alpha characters after the prefix, but some commands include just one or two alpha characters after the prefix. Some extended commands have a single execution mode. No further syntax is added after the prefix and body of the command.

  • Page 33: Command And Response Characters

    A3LA-R User Guide Version A  Iridium Satellite Product Proprietary Commands: o –MS prefix o Proprietary to the Iridium product line OMMAND AND ESPONSE HARACTERS The execution of a command string follows a left-to-right execution of each command followed by the reporting of a result code for the entire string. The ASCII character set (CCITT T.50 International Alphabet 5, American Standard Code for Information Interchange) is used for the issuance of commands and responses.

  • Page 34: Command Responses

    A3LA-R User Guide Version A  Characters that precede the AT prefix are ignored.  Ctrl-x can be used to abort a command line input. Consider the following six commands to be entered in a single command line: ATX0 (set basic command ATXn to n=0) AT&V (execute basic command AT&V) AT+GSN...

  • Page 35: Hardware Failure Reporting

    A3LA-R User Guide Version A numeric mode. Further note that responses can be suppressed by setting the command ATQn to ATQ1. Table 4 below shows the difference in format between these modes. Table 4: Numeric and Verbose Modes Numeric Mode Verbose Mode ATQ0 ATV0 ATQ0 ATV1...

  • Page 36: Appendix B: At Command Set Description

    A3LA-R User Guide Version A B: AT C PPENDIX OMMAND ESCRIPTION AT – A TTENTION This is the prefix for all commands except A/ and +++. When entered on its own, the A3LA-R will respond OK. A/ – R EPEAT OMMAND Repeat the last command issued to the A3LA-R unless the power was interrupted or the unit is reset.

  • Page 37: Vn - Verbose Mode

    A3LA-R User Guide Version A – V ERBOSE Set the response format of the A3LA-R, which may be either numeric or textual. Numeric responses Textual responses (default) – E RROR ORRECTION ESSAGE ONTROL Set the format of the CONNECT messages. Upon connection, the A3LA-R reports the DTE speed (default) Upon connection, the A3LA-R reports the line speed, the error correction protocol and the DTE speed in that order...

  • Page 38: Fn - Restore Factory Settings

    A3LA-R User Guide Version A DTR must be ON at call connection DTR must be ON during both in-call command mode and in-call data mode. Reaction to DTR ON to OFF transitions during in-call command mode and in-call data mode is determined by the &Dn setting as shown below.

  • Page 39: Mn - Asynchronous/Synchronous Mode

    A3LA-R User Guide Version A B.14 &M – A SYNCHRONOUS YNCHRONOUS Select the DTR operating mode. 0 Selects normal asynchronous operation (default). (See &Qn) B.15 &Q – S SYNC Select asynchronous mode. This is an extension of the &M command and is used to control the connection modes permitted.

  • Page 40: Wn - Store Active Configuration

    A3LA-R User Guide Version A B.18 &W – S TORE CTIVE ONFIGURATION Store the active profile in non-volatile memory. This is used to store user configurations for later use. Store current (active) configuration as profile 0 Store current (active) configuration as profile 1 B.19 &Y –...

  • Page 41: R - Display Registers

    A3LA-R User Guide Version A B.21 %R – D ISPLAY EGISTERS Display all the S registers in the system. B.22 *P – P OWER Turn A3LA-R off. Turn A3LA-R OFF B.23 +CBST – S ELECT EARER ERVICE Set Command: +CBST=[<speed>[,<name>[,<ce>]]] Select the bearer service type for mobile originated calls.

  • Page 42: Cgmi - Manufacturer Identification

    A3LA-R User Guide Version A List the supported <speed>, <name>, <ce>. Response is in the form: +CBST: (supported <speed>s),(supported <name>s),(supported <ce>s) B.24 +CGMI – M ANUFACTURER DENTIFICATION Exec Command: +CGMI Query A3LA-R RF board manufacturer. B.25 +CGMM – M ODEL DENTIFICATION Exec Command: +CGMM Query A3LA-R RF board model.
  • Page 43 A3LA-R User Guide Version A operation not allowed operation not supported PH-SIM PIN required PH-FSIM PIN required PH-FSIM PUK required SIM not inserted SIM PIN required SIM PUK required SIM failure SIM busy SIM wrong incorrect password SIM PIN2 required SIM PUK2 required memory full invalid index...

  • Page 44: Cpas - Modem Activity Status

    A3LA-R User Guide Version A service provider personalization PIN required service provider personalization PUK required corporate personalization PIN required corporate personalization PUK required unknown Read Command: +CMEE? Query mobile equipment error reporting level. The response is in the form: +CMEE: <x> Test Command: +CMEE=? List the supported error reporting level.

  • Page 45: Ds - Set Data Compression Function

    A3LA-R User Guide Version A If reporting is enabled, the intermediate result code +CR: <serv> is returned by the A3LA-R. <serv> can have one of the following values: ASYNC asynchronous transparent SYNC synchronous transparent REL ASYNC asynchronous non-transparent REL SYNC synchronous non-transparent Read Command: +CR? Query the current service reporting level settings.

  • Page 46: Dr - Data Compression Report Level

    A3LA-R User Guide Version A Query the current data compression parameter settings. The response is in the form: +DS: <direction>,<comp_neg>,<max_dict>,<max_dict> Test Command: +DS=? List the supported data compression parameters. The response is in the form: +DS: (supported<direction>s),(supported<comp_neg>s,(supported <max_dict>s),(supported<max_dict>s) Data compression will not work if IRLP is in unacknowledged mode. Note: The register is not updated right after the user requests new values because the requested values may or may not be what IRLP will use once a data call is established due to negotiations with the other peer.

  • Page 47: Ceer - Extended Error Report

    A3LA-R User Guide Version A Read Command: +DR? Query the current reporting level setting. The response is in the form: +DR: <mode> Test Command: +DR=? List the supported parameter settings. The response is in the form: +DR: (supported <mode>s) B.33 +CEER – E XTENDED RROR EPORT...
  • Page 48 A3LA-R User Guide Version A call barred SM transfer rejected destination out of service unidentified subscriber facility rejected unknown subscriber network out of order temporary failure congestion resources unavailable facility not subscribed facility not implemented invalid SM reference value invalid message invalid mandatory information element nonexistent message type incompatible message...
  • Page 49 A3LA-R User Guide Version A SC busy no SC subscription SC system failure invalid SME address destination SME barred SM rejected SIM SMS storage full no SMS storage capability in SIM error in MS memory capacity exceeded unspecified error A3LA-R failure SMS service reserved operation not allowed operation not supported...

  • Page 50: Cmgf - Sms Message Format

    A3LA-R User Guide Version A B.36 +CMGF – SMS M ESSAGE ORMAT Set Command: +CMGF=[<mode>] Set command tells the A3LA-R, which input and output format of messages to use. <mode> indicates the format of messages used with send, list, read and write commands and unsolicited result codes resulting from received messages.

  • Page 51: Cmgr - Read Sms Message

    A3LA-R User Guide Version A Response is in the following format for PDU mode: +CMGL:<index>,<stat>,[<alpha>],<length><CR><LF><pdu>[<CR><LF>+CMGL:<ind ex>,<stat>,[<alpha>],<length><CR><LF><pdu> [...]] where: <alpha>: string type alphanumeric representation of TP-destination address or TP- originating address corresponding to the entry found in the phonebook (optional field); <length>: in PDU mode, this is the length of the actual TP data unit in octets (i.e.

  • Page 52: Cmgs - Send Sms Message

    A3LA-R User Guide Version A 3 - MO message sent (When reading an MT message the first time, the status is reported as 0 (unread). The status is then changed to 1 (read), and that is reported on subsequent reads of that message.) <alpha>:string type alphanumeric representation of TP-destination address or TP- originating address corresponding to the entry found in the phonebook (optional...

  • Page 53: Cmod - Call Mode

    A3LA-R User Guide Version A [9] TPDU in hexadecimal format. By default, message status will be set to ’stored unsent’, but parameter <stat> allows also other status values to be given. PDU entry must be terminated by <ctrl-Z>. Storing can be cancelled by sending the <ESC>...
  • Page 54 A3LA-R User Guide Version A Buffer unsolicited result codes in the A3LA-R. If result code buffer is full, older indications are discarded and replaced with the new received indications. (default) Discard indication and reject new received message unsolicited result codes when A3LA-R-DTE link is reserved (e.g. in in-call data mode). Otherwise forward them directly to the DTE.

  • Page 55: Cops - Operator Select

    A3LA-R User Guide Version A Buffer of unsolicited result codes defined within this command is flushed to the DTE when <mode> 1...3 is entered (OK response is returned before flushing the codes). (default) Buffer of unsolicited result codes defined within this command is cleared when <mode>...
  • Page 56 A3LA-R User Guide Version A Decimal) digit country code plus a two BCD digit network code; hence the number has structure: (country code digit 3)(country code digit 2)(country code digit 1)(network code digit 2)(network code digit 1). Since IRIDIUM is the only operator, the short and long format is “IRIDIUM”...

  • Page 57: Cpbf - Find Phonebook Entries

    A3LA-R User Guide Version A B.44 +CPBF – F HONEBOOK NTRIES Exec Command: +CPBF=<findtext> Execution command returns phonebook entries (from the current phonebook memory storage selected with +CPBS) which alphanumeric fields start with string <findtext>. <findtext> should be of string type enclosed by ““; for example, “John”. Entry fields returned are location number <index n>, phone number stored there <number>...

  • Page 58: Cpbs - Select Phonebook Storage

    A3LA-R User Guide Version A Test command returns location range supported by the current storage and the maximum lengths of <number> and <text> fields. Response is in the form: +CPBR: (list of supported <index>s),<nlength>,<tlength> where <nlength> indicates the maximum length of <number> and <tlength> shows the maximum length of <text>.

  • Page 59: Cpin - Enter Pin

    A3LA-R User Guide Version A out, but <number> is given, entry is written to the first free location in the phonebook. Both <text> and <number> should be of string type enclosed by ““; for example, “John”,”1234”. Test Command: +CPBW=? Test command returns the location range supported by the current storage, the maximum length of <number>...

  • Page 60: Cpms - Select Preferred Sms Message Storage

    A3LA-R User Guide Version A SIM PUK A3LA-R is waiting for SIM PUK to be given (because SIM PIN1 is blocked). SIM PIN2 A3LA-R is waiting for SIM PIN2 to be given.* SIM PUK2 A3LA-R is waiting for SIM PUK2 to be given (because SIM PIN2 is blocked).

  • Page 61: Creg - Network Registration

    A3LA-R User Guide Version A <total1>: total number of message locations in <mem1> <used2>: number of messages currently in <mem2> <total2>: total number of message locations in <mem2> <used3>: number of messages currently in <mem3> <total3>: total number of message locations in <mem3> Read Command: +CPMS? Read command returns the current storage selected, usage and capacity.

  • Page 62: Csca - Sms Service Center Address

    A3LA-R User Guide Version A <stat> can be one of the following: not registered, A3LA-R is not currently searching a new operator to register registered, home network not registered, but A3LA-R is currently searching a new operator to register registration denied unknown registered, roaming Read Command: +CREG?

  • Page 63: Cscb - Select Cell Broadcast Message Types

    A3LA-R User Guide Version A +CSCA: <sca>,<tosca> B.52 +CSCB – S ELECT ROADCAST ESSAGE YPES Read Command: +CSCB? Read command returns the current values for <mode>, <mids> and <dcss>. Response is in the form: +CSCB: <mode>,<mids>,<dcss> Test Command: +CSCB=? Test command returns supported modes. Response is in the form: +CSCB: (list of supported <mode>s) B.53 +CSCS –...

  • Page 64: Csta - Select Type Of Address

    A3LA-R User Guide Version A is not supported, final result code +CMS ERROR:<cms_err> shall be returned. Only message service type 0 is currently supported. Valid values for <service> are: GSM 03.40 [9] and 03.41 [10] (the syntax of SMS AT commands is compatible with GSM 07.05 [3] Phase 2 version 4.7.0) (default) Response is in the form: +CSMS: <mt>,<mo>,<bm>...

  • Page 65: Gmi - Manufacturer Identification

    A3LA-R User Guide Version A +CSTA: (supported <type>s) B.56 +GMI – M ANUFACTURER DENTIFICATION Exec Command: +GMI Query the A3LA-R RF board manufacturer. This command is similar to +CGMI. B.57 +GMM – M ODEL DENTIFICATION Exec Command: +GMM Query the A3LA-R RF board model. This command is similar to +CGMM. B.58 +GMR –...

  • Page 66: D> - Direct Dial From Phonebook

    A3LA-R User Guide Version A International dialing prefix. Allows the international access code to be omitted from dial string. > Direct dial from phonebook locations. See subsection below for further details. Start up a voice call. This modifier should be given after the dialing digits (or modifiers).

  • Page 67: Hn - Hangup

    A3LA-R User Guide Version A D><n>[;] Originate call to phone number in entry location <n> (the command Select Phonebook Memory Storage +CPBS setting determines which phonebook storage is used). B.63 H – H ANGUP Control the hook switch. This command is used to clear a data call connection. It is also used to clear a voice call connection when the A3LA-R/RM/RGS has originated the voice call with the ATD dial command or terminated the voice call with the ATA or ATS0=n answer command.

  • Page 68: Clvl - Volume Level Control

    A3LA-R User Guide Version A Note that the Wn command limits which connection related responses will be reported. B.66 +CLVL – V OLUME EVEL ONTROL Exec Command: +CLVL=<level> This command is used to select the ‘volume’ of the audio on the audio path. <level> is an integer type value with the smallest value representing the lowest sound level.

  • Page 69: Cmut - Mute Control

    A3LA-R User Guide Version A B.67 +CMUT – M ONTROL Exec Command: +CMUT=<n> This command is used to enable and disable the uplink voice muting during a voice call. <n> can take one of the following values: mute off mute on Read Command: +CMUT? Query the current mute setting.

  • Page 70: Cvhu - Voice Hangup Control

    A3LA-R User Guide Version A +CR: <mode> Test Command: +CRC=? List the supported result code settings. The response is in the form: +CR: (supported <mode>s) B.69 +CVHU – V OICE ANGUP ONTROL Set Command: +CVHU=[<mode>] Selects whether the Hn (hangup) or &Dn command shall cause a voice call connection to be disconnected or not.

  • Page 71: Msvts - Dtmf Generation In Voice Call

    A3LA-R User Guide Version A field ( zz) is ignored if it is entered. The range of valid years is between 1970 and 2058. For example, May 15, 2011, 22:10:00 hours can be set using +CCLK= “11/05/15,22:10:00”. Read Command: +CCLK? Read command returns the current setting of the clock.

  • Page 72: Msvtr - Dtmf Received In Voice Call

    A3LA-R User Guide Version A B.72 –MSVTR – DTMF R ECEIVED IN OICE Set Command: –MSVTR=[<mode>] Disable or enable the receiving of DTMF messages from the network. <mode> takes one of the following values: Receiving of DTMF disabled (default) Receiving of DTMF enabled If receiving DTMF is enabled, the A3LA-R/RM/RGS sends the following unsolicited result code every time a DTMF inband signaling data is received from the network while in a voice call:...

  • Page 73: Msstm - Request System Time

    A3LA-R User Guide Version A Read Command: –MSVLS? Query the current parameter settings. The response is in the form: –MSVLS: <mode> Test Command: –MSVLS=? List the supported parameter settings. The response is in the form: –MSVLS: (supported <mode>s) Note: DTMF generated with the –MSVTS command is never played back locally as tones and is therefore neither played nor muted under control of the –MSVLS command.

  • Page 74: Msgeo - Request Geolocation

    A3LA-R User Guide Version A Iridium system time source: The system time is available and valid only after the A3LA- R has registered with the network and has received the Iridium system time from the network. Once the time is received, the A3LA-R uses its internal clock to increment the counter.

  • Page 75: Ccfc - Call Forward Service

    A3LA-R User Guide Version A B.76 +CCFC – C ORWARD ERVICE Exec Command: +CCFC=<reason>,<mode>[,<number>[,<type>[,class>[,<subaddr>[,<satype>[,<time >]]]]]] This command is based on GSM 07.07 [2] subclause 7.10, and allows control of the call forwarding supplementary service according to GSM 02.82 [11]. Registration, erasure and status query are supported.

  • Page 76: Clcc - Request Current Call Status

    A3LA-R User Guide Version A <satype>: type of sub-address, not supported by Iridium <time>: string containing number of seconds (up to 30, in multiples of 5). When ‘no reply’ is enabled or queried, this gives the time in seconds to wait before call is forwarded.

  • Page 77: Cnum - Read Msisdn Numbers

    A3LA-R User Guide Version A Note: the form of this announcement currently differs from the standard given in 3GPP TS 27.007 [12] subclause 7.18. A change to the interface may be made to become more standard. B.78 +CNUM – R MSISDN N UMBERS Exec Command: +CNUM...
  • Page 78 A3LA-R User Guide Version A <k1> represents the maximum number of sequentially numbered I frames that may be outstanding at any given time at downlink direction (IWF->A3LA-R) and can take the following values: 1-105. Default is 105. <k2> represents the maximum number of sequentially numbered I frames that may be outstanding at any given time at uplink direction (A3LA-R->IWF) and can take the following values: 1-105.

  • Page 79: Wfrng - Force Irlp Renegotiation

    A3LA-R User Guide Version A 20-255 (in 10-ms unit). Default is 25. <mode> is used to indicate the mode of operation and can take on the following values: unacknowledged mode of operation acknowledged mode of operation (default) NOTE: For the proper operation of the IRLP procedures, t2 should be less than t1 and 2*t4 should be less than t1.

  • Page 80: Wtm - Irlp Test Mode

    A3LA-R User Guide Version A Test Command: +WFRNG=? List the supported parameter settings. The response is in the form: +WFRNG: (supported <frng>s) B.82 +WTM – IRLP T Set Command: +WTM=<tm> Select DCE mode of operation. <tm> can take the following values: IRLP test mode off (default) IRLP test mode on Read Command: +WTM?

  • Page 81: Wdav - Register Or Deregister An Rs232 Dav Data Peripheral

    A3LA-R User Guide Version A +WDLDM: <dldm>,<mi>,<dtl> Test Command: +WDLDM=? List the supported parameter settings. The response is in the form: +WDLDM: (supported <dldm>s), (supported <mi>s), (supported <dtl>s) B.84 +WDAV – R RS232 DAV D EGISTER OR EREGISTER AN ERIPHERAL Set Command: +WDAV=[<DP type>[,<encrypt>]] Register or deregister an RS232 DAV Data Peripheral (DP).

  • Page 82: Sbdrb - Short Burst Data: Read Binary Data

    A3LA-R User Guide Version A  The <SBD message length> parameter represents the length, in bytes, of the SBD message not including the mandatory two-byte checksum.  The maximum mobile originated SBD message length is 1960 bytes. The minimum mobile originated SBD message length is 1 byte. ...

  • Page 83: Sbdrt - Short Burst Data: Read Text Message

    A3LA-R User Guide Version A o The {2-byte message length} field represents the length, in bytes, of the SBD message not including the length field or the mandatory two- byte checksum. The high order byte will be sent first. o The maximum mobile terminated SBD message length is 1890 bytes. o The checksum is the least significant 2-bytes of the summation of the entire SBD message.

  • Page 84: Sbdd - Short Burst Data: Clear Sbd Message Buffer(S)

    A3LA-R User Guide Version A B.88 +SBDD – S SBD M HORT URST LEAR ESSAGE UFFER Exec Command: +SBDD[<Delete type>] This command is used to clear the mobile originated buffer, mobile terminated buffer or both.  The <Delete type> parameter identifies which buffers are cleared. 0: Clear the mobile originated buffer 1: Clear the mobile terminated buffer 2: Clear both the mobile originated and mobile terminated buffers...

  • Page 85: Sbds - Short Burst Data: Status

    A3LA-R User Guide Version A B.90 +SBDS – S HORT URST TATUS Exec Command: +SBDS This command returns current state of the mobile originated and mobile terminated buffers. Command Response: +SBDS: <MO flag>, <MOMSN>, <MT flag>, <MTMSN> where: <MO flag>: The MO flag indicates the existence of a message in the mobile originated buffer.

  • Page 86: Car - Audio Output Control

    A3LA-R User Guide Version A B.92 +CAR – A UDIO UTPUT ONTROL Set Command: +CAR=<n> This command switches the type of audio output between analog, digital and mute (no audio output). Valid values for <n> are as follows: mute analog (Codec port) digital (User Connector port) Read Command: +CAR? This command queries the current audio setting.

  • Page 87: Cier - Indicator Event Reporting

    A3LA-R User Guide Version A B.94 +CIER – I NDICATOR VENT EPORTING Set Command: +CIER=[<mode>[,<sigind>[,<svcind>]]] The set command enables or disables sending of the +CIEV unsolicited result code by the A3LA-R in case of indicator state changes. <mode> controls the processing of the +CIEV unsolicited result codes.
  • Page 88 A3LA-R User Guide Version A When enabled, the signal quality indicator is reported only when the signal strength changes. <svcind>: Control reporting of “service availability” indicator changes. No “service availability” indicator reporting Enable “service availability” indicator reporting using result code +CIEV:1,<value>...

  • Page 89: Cris - Ring Indication Status

    A3LA-R User Guide Version A B.95 +CRIS – R NDICATION TATUS Exec Command: +CRIS Query the ring indication status, returning the reason for the most recent assertion of the Ring Indicate signal. The response contains separate indications for telephony and SBD ring indications.

  • Page 90: Culk - Unlock

    A3LA-R User Guide Version A Equivalent to 4 bars displayed on the signal strength indicator Equivalent to 5 bars displayed on the signal strength indicator Note: The +CSQ form of the command waits for an updated signal strength reading to become available.

  • Page 91: Cvmi - Voicemail Indication

    A3LA-R User Guide Version A Unlocked – A3LA-R is not locked and is permitted to perform SBD sessions. Locked – A3LA-R is locked and unable to perform SBD sessions. It must be unlocked by supplying the correct unlock key to the +CULK command. Permanently locked –...

  • Page 92: Clip - Calling Line Identification Presentation

    A3LA-R User Guide Version A This returns the 19 or 20 digit Integrated Circuit Card Identification of the SIM. Note: This value is cached from the SIM and thus is not available until the caching has completed ~5-10 seconds after startup. B.100 +CLIP –...

  • Page 93: Clir - Calling Line Identification Restriction

    A3LA-R User Guide Version A <m>: CLIP not provisioned CLIP provisioned Unknown (e.g. no network, etc.) B.101 +CLIR – C ALLING DENTIFICATION ESTRICTION Exec Command: +CLIR=<n> Note: While this command is implemented in the A3LA-R, it may not yet be supported in the Iridium network.

  • Page 94: Ipr - Fixed Dte Rate

    A3LA-R User Guide Version A CLIR provisioned in temporary mode, defaulting to presentation allowed B.102 +IPR – F DTE R IXED Set Command: +IPR=<rate>[,<autoflag>] Set the data rate at which the A3LA-R will accept commands. The change in data rate takes effect after the result code (e.g.

  • Page 95: Sbddet - Short Burst Data: Detach

    A3LA-R User Guide Version A  For example, “AT+SBDWT=hello”  The length of <text message> is limited to 120 bytes. This is due to the length limit on the AT command line interface.  The message is terminated when a carriage return is entered Alternatively, the text message may be entered separately: ...

  • Page 96: Sbdi - Short Burst Data: Initiate An Sbd Session

    A3LA-R User Guide Version A Detach successfully performed An error occurred while attempting the detach <error>: Gateway-reported values: Detach successfully performed 1..4 Reserved, but indicate success if used 5..14 Reserved, but indicate failure if used Access is denied A3LA-R-reported values: Modem has been locked and may not make SBD calls (see +CULK command) Gateway not responding (local session timeout)
  • Page 97 A3LA-R User Guide Version A  The SBD session type is fixed at type 0 – MO call  The SBD Delivery Short Code will be the value specified by the +SBDDSC command  An SBD Detach is performed as part of the call ...

  • Page 98: Sbdix[A] - Short Burst Data: Initiate An Sbd Session Extended

    A3LA-R User Guide Version A <MT status>: The MT status provides an indication of the disposition of the mobile terminated transaction. The field can take on the following values: No SBD message to receive from the GSS SBD message successfully received from the GSS An error occurred while attempting to perform a mailbox check or receive a message from the GSS <MTMSN>: The Mobile Terminated Message Sequence Number (MTMSN) is assigned...
  • Page 99 A3LA-R User Guide Version A  If there is a message queued at the GSS it will be transferred to the A3LA-R and placed into the mobile terminated buffer  This command will always attempt an SBD registration, consisting of attach and location update, during the SBD session in order to support SBD Ring Alert.
  • Page 100 A3LA-R User Guide Version A MO message, if any, transferred successfully, but the MT message in the queue was too big to be transferred MO message, if any, transferred successfully, but the requested Location Update was not accepted 3..4 Reserved, but indicate MO session success if used 5..8 Reserved, but indicate MO session failure if used GSS reported that the call did not complete in the allowed time...

  • Page 101: Sbddsc - Short Burst Data: Delivery Short Code

    A3LA-R User Guide Version A SBD message successfully received from the GSS An error occurred while attempting to perform a mailbox check or receive a message from the GSS <MTMSN>: The Mobile Terminated Message Sequence Number (MTMSN) is assigned by the GSS when forwarding a message to the A3LA-R. This value is indeterminate if the field <MT status>...

  • Page 102: Sbdmta - Short Burst Data: Mobile-Terminated Alert

    A3LA-R User Guide Version A B.108 +SBDMTA – S HORT URST OBILE ERMINATED LERT Set Command: +SBDMTA=<mode> Enable or disable ring indications for SBD Ring Alerts. <status>: Disable ring indication Enable ring indication (default) When SBD ring indication is enabled, the A3LA-R asserts the RI line and issues the unsolicited result code SBDRING when an SBD ring alert is received.
  • Page 103 A3LA-R User Guide Version A includes an SBD registration and should be used for an application that does not require SBD Ring Alert. <location> has format: [+|-]DDMM.MMM,[+|-]dddmm.mmm where: Degrees latitude (00-89) Minutes latitude (00-59) MMM Thousandths of minutes latitude (000-999) Degrees longitude (000-179) Minutes longitude (00-59) mmm Thousandths of minutes longitude (000-999)
  • Page 104 A3LA-R User Guide Version A Gateway-reported values: No error Session completed but the requested Location Update was not accepted 3..14 Reserved, but indicate Location Update failure if used Access is denied A3LA-R-reported values: Modem has been locked and may not make SBD calls (see +CULK command) Gateway not responding (local session timeout) Connection lost (RF drop)

  • Page 105: Sbdareg - Short Burst Data: Automatic Registration

    A3LA-R User Guide Version A B.110 +SBDAREG – S HORT URST UTOMATIC EGISTRATION Exec Command: +SBDAREG=<mode> Set the A3LA-R’ Auto-registration mode. <mode>: Disable automatic registration (default) Set the Auto-registration mode to “Automatic” Set the Auto-registration mode to “Ask” When auto-registration is enabled, mode 1 or 2, the A3LA-R monitors its current location and triggers an SBD auto-registration when it determines that it has moved sufficiently far away from its last registered location.

  • Page 106: Sbdsx - Short Burst Data: Status Extended

    A3LA-R User Guide Version A Gateway-reported values: No error Session completed but the requested Location Update was not accepted 3..14 Reserved, but indicate Location Update failure if used Access is denied A3LA-R-reported values: A3LA-R has been locked and may not make SBD calls (see +CULK command) Gateway not responding (local session timeout) Connection lost (RF drop) Link failure (A protocol error caused termination of the call)
  • Page 107 A3LA-R User Guide Version A <MO flag>: The MO flag indicates the existence of a message in the mobile originated buffer. The response from the A3LA-R is one of the following numeric codes: No message in mobile originated buffer Message in mobile originated buffer <MOMSN>: The MOMSN identifies the sequence number that will be used during the next mobile originated SBD session.

  • Page 108: Adjant - User Antenna Adjustment Required

    A3LA-R User Guide Version A B.112 +ADJANT – U NTENNA DJUSTMENT EQUIRED Exec Command: none Unsolicited Announcement: +ADJANT:<adj_required> where: <adj_required>: The adj_required flag indicates whether the user needs to adjust the L-band antenna position to improve reception. Adjustment no longer required Adjustment required The “+ADJANT:1”...

  • Page 109: Pcda - Pending Call Drop Alert

    A3LA-R User Guide Version A +ANTST:<ant_status> where: <ant_status>: Built-in antenna is stowed Built-in antenna is deployed, or an external antenna (via docking cradle) is connected, and the built-in antenna is disconnected stowed/deployed status is irrelevant The +ANTST:<ant status> message will be sent whenever internal polling indicates that the antenna status has changed, or on polling after +WANTST has been received regardless of whether the state has changed or not.

  • Page 110: Ccwa - Call Waiting Service

    A3LA-R User Guide Version A +DPLCI=<call_state>,<call_type>,<emergency_call>,<telephone_number> where: <call_state>: Idle MO Establishing MT Alerting MT Connecting Active Releasing <call_type>: Speech Data <emergency_call>: Normal Call Emergency Call <telephone_number>: Dialed telephone number digits The +DPLCI message will be sent whenever there is a call state change based on the activity of a DPL peripheral handset.
  • Page 111 A3LA-R User Guide Version A Test command List of supported <n>s +CCWA=? +CCWA:(0,1) None Unsolicited result notifying that a call is waiting +CCWA:<number>,<type>,<class> Note: While this command is implemented in the A3LA-R, it may not yet be supported in the Iridium network. Stand by for an Iridium Technical Bulletin announcing network support for this feature.
  • Page 112 A3LA-R User Guide Version A This parameter defaults to 7, equal to all classes, but the A3LA-R/RM/RGS only supports Voice Call Waiting so this is illegal. Therefore in practice the DTE must supply <classx>=1. <status>: Call Waiting service not active for specified Class Call Waiting service active for specified Class <number>: quoted string type phone number of calling address in format specified by <type>...

  • Page 113: Clck - Facility Lock

    A3LA-R User Guide Version A B.117 +CLCK – F ACILITY Command Possible Response(s) +CLCK= None (command ignored without error) +CLCK=<fac>,<mode>[<passwd>[,<classx>]] When command unsuccessful +CME ERROR: <err> When <mode>=2 and command successful +CLCK:<status>[,<class1> [<CR><LF>+CLCK:<status>,<class2> [...]] (but the A3LA-R will in practice only report a single line, <class1>...
  • Page 114 A3LA-R User Guide Version A “CS” CNTRL Surface (Enable/Disable Phone Lock feature). The current Phone Unlock Code is required as <passwd>. “SC” SIM: Activate/Deactivate SIM card PIN Code, in which the SIM asks password in ME power-up. The PIN code is required as <passwd>. "FD"...
  • Page 115 A3LA-R User Guide Version A Enable (Activate) <passwd>: string type, enclosed by “ “; for example, “1234”. Note: Factory default SIM card PIN Code is “1111” Note: Factory default Phone Unlock Code is “1234” <classx> is a sum of integers each representing a class of information: voice data This parameter defaults to 7, equal to all classes, but the A3LA-R only supports...

  • Page 116: Cpwd - Change Password

    A3LA-R User Guide Version A B.118 +CPWD – C HANGE ASSWORD Exec Command: +CPWD=<fac>,<oldpwd>,<newpwd> This command sets a new password for the facility lock function defined by the AT command Facility Lock +CLCK. The following parameter values are currently supported: <fac>: “CS”...

  • Page 117: Chld - Call Hold And Multiparty

    A3LA-R User Guide Version A A3LA-R to stop sidetone generation. The following parameter values are currently supported: < sidetone enabled >: Enable sidetone Disable sidetone Query Command: +CSDT? This command returns the current transceiver board sidetone generation state. 1 = enabled, 0 = disabled.
  • Page 118 A3LA-R User Guide Version A This command is not abortable, and finishes without waiting for a response from the network. The interaction of this command with other commands based on other GSM supplementary services is described in the GSM standard. The following parameter values are currently supported: <n>: “0”...

  • Page 119: Xcsi - Extended Call State Information

    A3LA-R User Guide Version A B.121 +XCSI – E XTENDED TATE NFORMATION This proprietary unsolicited announcement was added to allow the DTE to keep track of call state during Call Hold and Multiparty operations using AT+CHLD. Exec Command: none Unsolicited Announcement: +XCSI=<overall call_state>,<active call_state>,<held_call...
  • Page 120 A3LA-R User Guide Version A Waiting for user to answer MT call User accepted MT call, completing establishment Fully active Call is part of fully active multiparty call Call held Call is part of held multiparty call Multiparty (conference) build requested Hold requested Multiparty hold requested Retrieve requested...

  • Page 121: Cdsi - Report Sms Status

    A3LA-R User Guide Version A B.122 +CDSI – R EPORT STATUS This announcement is sent when the network responds after a mobile-originated SMS send attempt. Exec Command: none Unsolicited Announcement: +CDSI:<status> where: <status>: 0..255 Success code or failure cause (TD_SMS_RP_CAUSE_*) Unassigned Number Operator Barring Call Barred...

  • Page 122: Gpssta - Configure Gps Status

    A3LA-R User Guide Version A IE Not Implemented Unspecified Error Interworking Error Success Success Ack No Transaction Id CM Internal Error RL Timeout Values up to 127 are defined by GSM for SMS-PP Relay Layer messages and values 128 and above are internal codes introduced by Iridium. B.123 +GPSSTA –...

  • Page 123: Appendix C: S-Register Definitions

    A3LA-R User Guide Version A C: S-R PPENDIX EGISTER EFINITIONS S-registers allow control over specific A3LA-R operations. Some S-registers contain a single numeric value. Other S-registers are bitmapped where individual bits, or sets of bits, control specific functions. EGISTER OMMANDS Commands allow S-registers to be read, written, or simply referenced (i.e., set a pointer to designate the current, referenced S-register).

  • Page 124: Standard S-Registers

    A3LA-R User Guide Version A TANDARD EGISTERS Table 5: Standard S-Registers Sr=n Command Register Range Default Description Write-Protected Number in SAC0201 0 – 127 Carriage return character 0 – 127 Line feed character 0 – 32 Backspace character Wait for dial-tone 0 –...
  • Page 125 A3LA-R User Guide Version A Table 5: Standard S-Registers Sr=n Command Register Range Default Description Write-Protected Number in SAC0201 Bitmap register where bits 0 and 1 reflect the speaker volume setting, bits 2 and 3 0 – 255 reflect the speaker on/off setting, and bits 4, 5, and 6 reflect the Xn setting.

  • Page 126: Iridium-Specific S-Register Extensions

    A3LA-R User Guide Version A Table 5: Standard S-Registers Sr=n Command Register Range Default Description Write-Protected Number in SAC0201 Bitmap register where bits 2 and 6 enable retrain on bad signal quality setting, bit 4 reflects xon/xoff usage setting, and bit 5 0 –...
  • Page 127 A3LA-R User Guide Version A Table 6: Iridium-Specific S-Register Extensions Sr=n Command Register Range Default Description Write Protected Number in SAC0201 GSM Call clearing code as returned by the 0 – 255 network. Refer to GSM 04.08 [7] Table 10.86 Cause Information Element Values. Bitmap register: 0 = +CMGF setting 1 = +CBST parameter <name>...
  • Page 128 A3LA-R User Guide Version A Table 6: Iridium-Specific S-Register Extensions Sr=n Command Register Range Default Description Write Protected Number in SAC0201 0 – 105 IRLP k isu->iwf parameter S100 1 – 15 IRLP N2 parameter 26 – S102 IRLP T1 parameter 10 –...
  • Page 129 A3LA-R User Guide Version A Table 6: Iridium-Specific S-Register Extensions Sr=n Command Register Range Default Description Write Protected Number in SAC0201 Dynamic link measurement interval S124 0 – 255 (+WDLM <mi> setting). Value in 1000 ms unit. Dynamic link delay measurement delay S125 1 –...

  • Page 130: Appendix D: Summary Of Result Codes

    A3LA-R User Guide Version A D: S PPENDIX UMMARY OF ESULT ODES The following tables list the result codes returned by the A3LA-R. Table 7: V.25ter/Hayes Result Codes Numeric (V0) Verbose (V1) Description Acknowledges execution of command; voice call ‘OK’ connection has been established.

  • Page 131: Table 8: Gsm 7.07 Result Codes

    A3LA-R User Guide Version A Table 7: V.25ter/Hayes Result Codes Numeric (V0) Verbose (V1) Description ’CARRIER 7200’ Data rate detected at 7200 bps. ’CARRIER 9600’ Data rate detected at 9600 bps. ’CARRIER 12000’ Data rate detected at 12000 bps. ‘COMPRESSION: Data call connected with V.42bis compression V.42bis’...

  • Page 132: Table 9: Gsm 7.05 Result Codes

    A3LA-R User Guide Version A Table 9: GSM 7.05 Result Codes Numeric (V0) Verbose (V1) Description SMS-DELIVER message indication as verbose ‘+CMTI: <mem>,<index>’ (unsolicited if enabled). ‘+CMT: SMS-DELIVER message indication as verbose <alpha>],<length><CR><LF><pdu>’ (unsolicited if enabled). (PDU mode) ‘+CDS:<length><CR><LF><pdu>’ (PDU SMS-STATUS-REPORT message as verbose indication (unsolicited if enabled).

  • Page 133: Appendix E: Informative Examples

    A3LA-R User Guide Version A E: I PPENDIX NFORMATIVE XAMPLES The examples below are presented in two different formats. The format used in each example has no significance. A single format will be used in a future revision of this document. DENTIFICATION When beginning to build a communication link, a general DTE application controlling the A3LA- R should confirm the type of Iridium device to which it is connected.

  • Page 134: Power On To Send An Sbd Message

    A3LA-R User Guide Version A Table 12: Default Configuration To A3LA-R (from DTE) To DTE (from A3LA-R) Description AT+SBDMTA=1 Enable SBD ring indications AT&W0 Store the configuration as profile 0 AT&Y0 Select profile 0 as the power-up default SBD M OWER ON TO END AN ESSAGE...

  • Page 135: Sbd Automatic Notification Registration

    A3LA-R User Guide Version A SBD A UTOMATIC OTIFICATION EGISTRATION The DTE verifies its registration state, performs a registration in order to be able to receive automatic notifications, and enables automatic notification indications (see Table 14). Table 14: SBD Automatic Notification Registration To A3LA-R (from DTE) To DTE (from A3LA-R) Description...

  • Page 136: Sbd Automatic Notification Automatic Registration

    A3LA-R User Guide Version A Table 15: SBD Automatic Notification Message Reception To A3LA-R (from DTE) To DTE (from A3LA-R) Description A3LA-R informs DTE that a 90-byte message was successfully received +SBDIXA:0,23,1,237,90,2 with MTMSN 237, and that two further MT messages are queued at the GSS. DTE retrieves the received message AT+SBDRB from the A3LA-R.

  • Page 137: Answer A Data Call

    A3LA-R User Guide Version A Table 17: Originate a Data Call To A3LA-R (from DTE) To DTE (from A3LA-R) Description Asynchronous modem 4800 bps and IRLP AT+CR=1 Enable reporting ATD1234567890 Dial remote modem +CR: REL ASYNC Call connected at DTE rate of 9600 CONNECT ASYNC 9600 NSWER A The A3LA-R is capable of accepting mobile-terminated data calls.

  • Page 138: Coordinate +Clcc And +Cpas Responses

    A3LA-R User Guide Version A Table 19: Disconnect a Data Call To A3LA-R (from DTE) To DTE (from A3LA-R) Description ATD1234567890 Dial remote modem +CR: REL ASYNC Call connected at DTE rate of 9600 CONNECT ASYNC 9600 … … Data transfer <+++>...
  • Page 139 A3LA-R User Guide Version A Table 20: Coordinate +CLCC and +CPAS Reponses Call State +CLCC Response +CPAS Response Extended Ring Message Ringing – Data +CLCC: 004 +CPAS: 003 CRING: DATA In call – Voice +CLCC: 000 +CPAS: 000 or 003 In call –...

  • Page 140: Appendix F: Power Consumption

    A3LA-R User Guide Version A F: P PPENDIX OWER ONSUMPTION This section provides the electrical power profile of the A3LA-R. It does not describe every situation; however, it does offer a starting point for users to continue their own development design.

  • Page 141: Figure 6: Average Current Drawn During Standby

    A3LA-R User Guide Version A 0.100 4.0V to 5.5V 5.0V to 32V 0.075 0.050 0.025 0.000 Voltage (DC) Figure 6: Average Current Drawn During Standby 1.00 4.0V to 5.5V 5.0V to 32V 0.75 0.50 0.25 0.00 Voltage (DC) Figure 7: Average Power Consumption During Standby Document Number: 451-93156-001A 141 of 158...

  • Page 142: Figure 8: Average Current Drawn During A Data Switch Call

    A3LA-R User Guide Version A 0.500 4.0V to 5.5V 5.0V to 32V 0.375 0.250 0.125 0.000 Voltage (DC) Figure 8: Average Current Drawn During a Data Switch Call 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure 9: Average Power Consumption During a Data Switch Call Document Number: 451-93156-001A 142 of 158...

  • Page 143: Figure 10: Average Current Drawn During An Sbd Transmission

    A3LA-R User Guide Version A 0.500 4.0V to 5.5V 5.0V to 32V 0.375 0.250 0.125 0.000 Voltage (DC) Figure 10: Average Current Drawn During an SBD Transmission 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure 11: Average Power Consumption During an SBD Transmission Document Number: 451-93156-001A 143 of 158...

  • Page 144: Figure 12: Average Current Drawn During An Sms Transmission

    A3LA-R User Guide Version A 0.500 4.0V to 5.5V 5.0V to 32V 0.375 0.250 0.125 0.000 Voltage (DC) Figure 12: Average Current Drawn During an SMS Transmission 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure 13: Average Power Consumption During an SMS Transmission Document Number: 451-93156-001A 144 of 158...

  • Page 145: Figure 14: Average Current Drawn During A Voice Call Using Dpl Handset

    A3LA-R User Guide Version A 1.500 4.0V to 5.5V 5.0V to 32V 1.125 0.750 0.375 0.000 Voltage (DC) Figure 14: Average Current Drawn During a Voice Call Using DPL Handset 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure 15: Average Power Consumption During a Voice Call Using DPL Handset Document Number: 451-93156-001A 145 of 158...

  • Page 146: Appendix G: The Iridium Network

    A3LA-R User Guide Version A G: T PPENDIX RIDIUM ETWORK The Iridium satellite network is owned and operated by Iridium Communications Inc. It is constructed as a constellation of 66 satellites in low-earth orbit, terrestrial gateways, and Iridium Subscriber Units (ISUs). An ISU can either be an Iridium satellite phone or various types of modems.

  • Page 147: Iridium Network Data Capabilities

    A3LA-R User Guide Version A beams are shut down. The satellite footprint is approximately 4,700 km in diameter. Under each footprint, a satellite is power-limited to approximately 1,100 simultaneous circuits. The Iridium network uses a Time-Division Duplex (TDD) method and transmits and receives in an allotted time window within the frame structure.

  • Page 148: Dial-Up Data Service

    A3LA-R User Guide Version A Figure 17: Iridium Network Data Capabilities G.2 D ERVICE Dial-up data service provides connectivity through the Iridium satellite network to another Iridium modem, to the public switched telephone network (PSTN), to the Defense Switch Network (DSN), to a remote Local Area Network (LAN) (e.g., a corporate network), or to an Internet Service Provider (ISP) at a nominal data rate of 2.4 kilobits per second (kbps).

  • Page 149: Figure 18: Pstn Dial-Up Connectivity

    A3LA-R User Guide Version A to a specific modem with a phone number to dial, user identification, and password. The modem can then be used to call another computer, a remote LAN, or an Internet service provider, as shown in Figure 18. The handshaking and protocols are established between the modems independent of the landline.

  • Page 150: Direct Internet Connection

    A3LA-R User Guide Version A Figure 19: Iridium Dial-up Data Service G.3 D IRECT NTERNET ONNECTION The Iridium direct internet service allows users to connect to the internet via the Iridium gateway without having to sign up with an internet service provider. This service utilizes a dedicated Apollo Server at the Iridium gateway, which provides high-speed connectivity to the internet and optimizes server-to-Iridium modem communications.

  • Page 151: Short Burst Data

    A3LA-R User Guide Version A effective data throughput is achieved through the use of user-transparent data compression. The channel rate is still 2.4 kbps. However, 10 kbps effective throughput can be achieved depending on content (graphics and images result in lower effective throughput). G.4 S HORT URST...

  • Page 152: G.6 Rudics

    A3LA-R User Guide Version A SMSC. Unlike standard GSM, the Iridium SMS can only acknowledge that the message was delivered to the SMSC and not the end destination. SMS messages can be sent and received simultaneously while a voice call is in progress. This is possible because SMS messages travel over and above the radio channel using the signaling path, whereas the voice call uses a dedicated “traffic”...

  • Page 153: Appendix H: Standards Compliance

    A3LA-R User Guide Version A H: S PPENDIX TANDARDS OMPLIANCE The A3LA-R comprises an Iridium 9523 L-band transceiver board. The 9523 is a regulatory approved daughter module transceiver that can be fitted within an enclosed host system. The 9523 is designed to comply with the standards for Radio Emissions Compliance, Electromagnetic Compatibility, and AC Safety in the United States, European Union, and Canada, assuming an antenna with a gain of approximately 3 dBi and adequate shielding.

  • Page 154: Appendix I: Certificate Of Compliance

    A3LA-R User Guide Version A I: C PPENDIX ERTIFICATE OF OMPLIANCE Figure 20: Certificate of Compliance Document Number: 451-93156-001A 154 of 158...

  • Page 155: Appendix J: Export Compliance

    The A3LA-R is controlled by the export laws and regulations of the United States of America (USA). It is the policy of NAL Research to fully comply with all U.S. export and economic sanction laws and regulations. The export of NAL Research products, services, hardware, software, and technology must be made only in accordance with the laws, regulations, and licensing requirements of the U.S.

  • Page 156: Appendix K: Design Specifications

    A3LA-R User Guide Version A K: D PPENDIX ESIGN PECIFICATIONS K.1 M ECHANICAL PECIFICATIONS Dimensions:..............102 mm x 61 mm x 24 mm (4.0” x 2.43” x 0.95”) Weight: ...............198 g (7.0 ounces) Multi-Interface Connector: ........25-Pin Male D-Sub Iridium Antenna: ............TNC Female Connector SIM Chip Reader: ............Located beneath a cover plate at the top of the A3LA-R Status Display: ............LED...

  • Page 157: Environmental Specifications

    A3LA-R User Guide Version A K.4 E NVIRONMENTAL PECIFICATIONS Operating Temperature Range: .........–30°C to +70°C (–22°F to +158°F) Operating Humidity Range: ........< 75% RH Storage Temperature Range: ........–40°C to +85°C (–40°F to +185°F) Storage Humidity Range: ...........< 93% RH K.5 D I/O S PECIFICATIONS Dial-Up Data/RUDICS: ..........2.4 kbps (average)

  • Page 158: Appendix L: Mechanical Drawing

    A3LA-R User Guide Version A L: M PPENDIX ECHANICAL RAWING Figure 21: A3LA-R Mechanical Drawing Document Number: 451-93156-001A 158 of 158...

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