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NAL RESEARCH CORPORATION A3LA-RM General Description Manual

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451-93156-002A
GENERAL DESCRIPTION OF MODEL A3LA-RM
Revision A
May 20, 2020
Copyright © 2020 by NAL Research Corporation
11100 Endeavor Court Suite 300
Manassas, Virginia 20109 USA
Phone: 703-392-1136
E-mail: contact@nalresearch.com

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  • Page 1 451-93156-002A GENERAL DESCRIPTION OF MODEL A3LA-RM Revision A May 20, 2020 Copyright © 2020 by NAL Research Corporation 11100 Endeavor Court Suite 300 Manassas, Virginia 20109 USA Phone: 703-392-1136 E-mail: contact@nalresearch.com...
  • Page 2 LEGAL DISCLAIMER AND CONDITIONS OF USE This document contains information for the Iridium A3LA-RM modem and accompanying accessories (“Product”) is provided “as is.” Reasonable effort has been made to make the information in this document reliable and consistent with specifications, test measurements and other information. However, NAL Research Corporation and its affiliated companies, directors, officers, employees, agents, trustees or consultants (“NAL Research”) assume no responsibility for any typographical, technical, content or other...
  • Page 3 Revision History Revision Date Description Author 8/2/16 Initial version P. Kormendi Added revision history Updated address 5/20/20 P. Kormendi Updated document number Added AT^VOLB command NAL Research Corporation (451-93156-002A)

  • Page 4: Table Of Contents

    APPENDIX C: SUMMARY OF RESULT CODES ................. APPENDIX D: INFORMATIVE EXAMPLES ................APPENDIX E: POWER CONSUMPTION .................. APPENDIX F: DESCRIPTION OF THE IRIDIUM NETWORK ............APPENDIX G: STANDARDS COMPLIANCE ................APPENDIX H: MIL-STD-810G CERTIFICATION ............... APPENDIX I: EXPORT COMPLIANCE INFORMATION ..............NAL Research Corporation (451-93156-002A)
  • Page 5 APPENDIX J: MECHANICAL DRAWINGS ................NAL Research Corporation (451-93156-002A)

  • Page 6: Glossary

    Right Hand Circular Polarization RUDICS Router-Based Unrestricted Digital Internetworking Connectivity Solution Short Burst Data Subscriber Identity Module Sub-Miniature Version A Short Message Service Time Domain Duplex TDMA Time Division Multiple Access VSWR Voltage Standing Wave Ratio NAL Research Corporation (451-93156-002A)

  • Page 7: Purpose

    DTE (data terminal equipment) capable of sending standard AT commands via an RS232 serial port. A DTE can be a desktop computer, a laptop computer, a smart phone, or even a micro-controller. The A3LA-RM is functionally compatible with models 9522B, A3LA-R and A3LA-RS. It is approximately 60% smaller in volume and 50% lighter than the 9522B.
  • Page 8 Average Data Call Current: ~400mA @ 5.0VDC (peak of 2A) NOTE: The power requirements apply to DC power measured at the A3LA-RM multi- interface connector input. The average data call current may vary depending on the field- of-view between the modem antenna and the Iridium satellite.

  • Page 9: Multi-Interface Connector

    Table 1. This interface allows a connected DTE to utilize the A3LA-RM’s modem functionality through a set of AT commands. These commands are defined in Appendix A. The factory-set baud rate is 19,200 bps and can be changed using the +IPR command.

  • Page 10: Rs232 Data Interface (3-Wire Configuration)

    A3LA-RM to malfunction during a data call, an SMS session or an SBD session. Power reset by the A3LA-RM during a call is an indicative of the DC power source unable to sustain voltage above 4.0V at peak current demand. Appendix E provides the electrical power profile of the A3LA-RM.

  • Page 11: Power On/Off Control

    With the A3LA-RM held in the position shown in Figure 2 (DB25 connector to the left), the A3LA-RM is set for 4.0V to +5.4V when the red jumper is on the middle and left pins and is set for +5.0V to +32V when the jumper is on the middle and right pins. Each pin is also labeled with 5V and 32V to the left and right pins, respectively.

  • Page 12: Audio Interface

    The A3LA-RM supports both digital and analog audio I/O. The digital audio is in PCM format. In such format, digital audio cannot travel far (less than one foot); this is why the analog is chosen for the A3LA-RM audio handset. The analog audio input is a single-ended, unbalanced input with a minimum impedance of 10k...

  • Page 13: Sim Card Interface

    Figure 4. Location of the SIM Reader. 6.0 LED DISPLAY The A3LA-RM has three status LEDs depicted as P for power indicator, I for Iridium satellite signal strength and S for status (see Figure 5). They offer users a quick visual check to ensure proper modem...

  • Page 14: Configuration Settings

    8.0 MODES OF OPERATION The A3LA-RM serial data port is always in one of two modes: command mode or data mode. When the data port is in command mode, AT commands can be entered to control the A3LA-RM. In command mode, flow control has no effect, with the RTS input ignored and the CTS output driven ON (low).

  • Page 15: Bit Encryption

    The 9523 RF board can sometimes ‘lock-up’ when being inactive over a long period of time (a day or longer). The only way to recover is to power cycle the ISU. The A3LA-RM has safeguards put in place with a watch-dog timer to keep the 9523 RF board from locking up.

  • Page 16: Mounting Recommendations

    ^MPTFP command. 11.0 MOUNTING RECOMMENDATIONS The A3LA-RM has four features on its bottom surface that can aid in its mounting (see Appendix J). These four features are pre-drilled at a minimum depth of 0.25 inch to accept 6-32 thread type.

  • Page 17: Appendix A: At Interface

    Some basic commands listed in this document are marked with “No action, compatibility only”. In these cases, the basic command is accepted in the same fashion as is with other modems, but has no effect on the operation of the A3LA-RM, since it has no meaning in the Iridium environment.
  • Page 18 A.5 Command Entry An AT command is a string of characters sent by the DTE to the A3LA-RM while it is in command mode. A command string has a prefix, a body, and a terminator. The prefix consists of the ASCII characters AT or at.
  • Page 19 Result codes can be represented by text if the A3LA-RM is in verbose mode or with numbers if in numeric mode. The command ATVn informs the A3LA-RM whether to respond in verbose or numeric mode.
  • Page 20 A.7 Hardware Failure Reporting If the A3LA-RM detects a hardware problem during initialization, it may be unable to function correctly. The A3LA-RM notifies the DTE of this situation by issuing an unsolicited result code at the end of initialization: HARDWARE FAILURE: <subsys>,<error>...
  • Page 21 Allowed values for n are 0 and 1. A.8.11 &Dn – DTR Option Set the A3LA-RM reaction to DTR signal when auto dialing is disabled (see the ^AD command). DTR is ignored. A DTR signal input is not needed when set to &D0.
  • Page 22 Select profile 1 A.8.20 \Kn – Control Break Control the response of the A3LA-RM to a break received from the DTE or the remote modem according to the parameter specified. The response is different in three separate states: When a break is received from DTE when A3LA-RM is in data transfer mode:...
  • Page 23 Query the current bearer service type settings. Response is in the form: +CBST: <speed>,<name>,<ce> Test Command: +CBST=? List the supported <speed>, <name>, <ce>. Response is in the form: +CBST: (supported <speed>s),(supported <name>s),(supported <ce>s) A.8.24 +CGMI – Manufacturer Identification Exec Command: +CGMI Query A3LA-RM RF board manufacturer. NAL Research Corporation (451-93156-002A)
  • Page 24 A.8.25 +CGMM – Model Identification Exec Command: +CGMM Query A3LA-RM RF board model. A.8.26 +CGMR – Revision Exec Command: +CGMR Query A3LA-RM RF board revision. A.8.27 +CGSN – Serial Number Exec Command: +CGSN Query A3LA-RM IMEI. A.8.28 +CMEE – Report Mobile Equipment Error Set Command: +CMEE=[<x>]...
  • Page 25 A.8.30 +CR – Service Reporting Control Set Command: +CR=[<mode>] Set the service reporting level. <mode> takes the following values: Disable reporting (default) Enable reporting If reporting is enabled, the intermediate result code +CR: <serv> is returned by the A3LA-RM. NAL Research Corporation (451-93156-002A)
  • Page 26 Receive only Both directions (default) <comp_neg> can take on the following values: Do not disconnect if V.42bis is not negotiated by the A3LA-RM as specified in <direction> (default) Disconnect if V.42bis is not negotiated by the A3LA-RM as specified in <direction>...
  • Page 27 Set the data compression reporting level. <mode> can take on the following values: Disable data compression reporting (default) Enable data compression reporting If reporting is enabled, the following intermediate result codes are transmitted by the A3LA-RM: +DR: NONE No data compression +DR:...
  • Page 28 TPDU not supported 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 NAL Research Corporation (451-93156-002A)
  • Page 29 A.8.36 +CMGF – SMS Message Format Set Command: +CMGF=[<mode>] Set command tells the A3LA-RM, 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. Mode can be either PDU mode (entire TP data units used) or text mode (headers and body of the messages given as separate parameters).
  • Page 30 <pdu>: GSM 04.11 [8] SC address followed by GSM 03.40 [9] TPDU in hexadecimal format. Test Command: +CMGL=? Test command gives a list of all status values supported by the A3LA-RM. Response is in the form: +CMGL: (list of supported <stat>s) A.8.38 +CMGR –...
  • Page 31 "alternating call" refer to all GSM bearer and tele-services that incorporate more than one basic service (voice, data, fax) within one call). For the satellite modem, only a single call is supported. <mode>: single mode (default) NAL Research Corporation (451-93156-002A)
  • Page 32 DTE when DTE is active, e.g. DTR signal is ON. Valid values for <mode> are: Buffer unsolicited result codes in the A3LA-RM. 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-RM-DTE link is reserved (e.g.
  • Page 33 +CNMI: <mode>,<mt>,<bm>,<ds>,<bfr> Test Command: +CNMI=? Test command returns the supported settings of the A3LA-RM. Response is in the form: +CNMI: (list of supported <mode>s),(list of supported <mt>s),(list of supported <bm>s),(list of supported <ds>s),(list of supported <bfr>s) A.8.43 +COPS – Operator Select Set Command: +COPS=[<mode>[,<format>[,<oper>]]]...
  • Page 34 +CPBR: <index1>,<number>,<type>,<text>[[...] <CR><LF>+CPBR: <index2>,<number>,<type>,<text>] Test Command: +CPBR=? 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> NAL Research Corporation (451-93156-002A)
  • Page 35 A.8.48 +CPIN – Enter PIN Set Command: +CPIN=<pin>[,<newpin>] Set command sends to the A3LA-RM a password which is necessary before it can be operated (SIM Card PIN Code, SIM PUK, etc.). If no password request is pending, no action is taken by the A3LA-RM.
  • Page 36 <mem2> is the memory to which writing and sending operations are made; <mem3> is the memory to which received SMS messages are to be stored. If a chosen storage is not appropriate for the A3LA-RM, final result code +CMS ERROR: <cms_err> is returned.
  • Page 37 +CPMS: <mem1>,<used1>,<total1>,<mem2>,<used2>,<total2>,<mem3>,<used3>, <total3> Test Command: +CPMS=? Test command returns lists of memory storages supported by the A3LA-RM. Response is in the form: +CPMS: (list of supported <mem1>s),(list of supported <mem2>s), (list of supported <mem3>s) A.8.50 +CREG – Network Registration Set Command: +CREG=[<n>]...
  • Page 38 A.8.53 +CSCS – Select TE Character Set Set Command: +CSCS=[<chset>] Set command informs the A3LA-RM which character set <chset> is used by the DTE. Only the IRA character set is currently supported. <chset> should be of string type enclosed by ““; for example, “IRA”.
  • Page 39 Read command returns the current message service type set. Response is in the form: +CSMS: <service>,<mt>,<mo>,<bm> Test Command: +CSMS=? Test command returns the supported message services of the A3LA-RM. Response is in the form: +CSMS: (list of supported <service>s) A.8.55 +CSTA – Select Type of Address Set Command: +CSTA=[<type>]...
  • Page 40 Answer immediately. This causes the A3LA-RM to answer the incoming data or voice call. A.8.62 D – Dial Dial a data or voice call number. The dial command causes the A3LA-RM to enter originate mode and act as an auto dialer for connection to other modems or voice lines. The usual format is ATDnx..x where n is a Dial Modifier and x is a number.
  • Page 41 Enable auto-answer after n rings A.8.65 Xn – Extended Result Codes Select the response set to be used by the A3LA-RM when informing the DTE of the results of a command or data or voice call. OK, CONNECT, RING, NO CARRIER, NO ANSWER and ERROR CONNECT response is used to inform of a data call connection;...
  • Page 42 <mode> takes the following values: Disable extended format (default) Enable extended format If extended format is enabled, the unsolicited result code +CRING: <type> is returned by the A3LA-RM instead of RING, where <type> can be one of the following: ASYNC asynchronous transparent SYNC...
  • Page 43 +CVHU: (supported <mode>s) A.8.70 +CCLK – Real-Time Clock Set Command: +CCLK=[<time>] Sets the real-time clock of the A3LA-RM. If setting fails, ERROR is returned. <time>: string type value; format is “yy/MM/dd,hh:mm:sszz”, where characters indicate year two last digits), month, day, hour, minutes, seconds and time zone. There is no blank space between the two double quotes.
  • Page 44 –MSVTR: (supported <mode>s) A.8.73 –MSVLS – Local DTMF Feedback Selection Set Command: –MSVLS=[<mode>] Disable or enable playing of DTMF tones locally (i.e. feedback tones) while in a voice call. <mode> takes one of the following values: NAL Research Corporation (451-93156-002A)
  • Page 45 Accuracy as measured by the difference between the time reported and the actual time this message is sent out of the A3LA-RM’ serial port should not exceed 4 frame ticks (.36 seconds) and in most cases will be one frame tick (.09 seconds) or less.
  • Page 46 –6376, a maximum value of +6376, and a resolution of 4. <time_stamp> is assigned by the A3LA-RM when the geolocation grid code received from the network is stored to the A3LA-RM internal memory. Current Iridium system time, which is a running count of 90 millisecond intervals, is used for the time stamp.
  • Page 47 A.8.77 +CLCC – Request Current Call Status Exec Command: +CLCC Returns the current call status of the A3LA-RM. The response is a comma separated list of call states. The number of call states in the response depends on the number of active call instances e.g.
  • Page 48 <ver> specifies the desired IRLP version and can take the following values: Default IRLP version (N0) <k1> represents the maximum number of sequentially numbered I frames that may be outstanding at any given time at downlink direction (IWF->A3LA-RM) and can take the following values: 1-105. Default is 105.
  • Page 49 1-10. Default is 10. <r2> is used to represent the maximum number of S frames that are used to acknowledge I frames at uplink direction (A3LA-RM->IWF) and can take on the following values: 1-10. Default is 10. <t4> is used to supervise the re-sequencing of misordered frames. The values are defined to be the earliest instant to consider a tardy frame as lost.
  • Page 50 Register Type 1 RS232 DAV Data Peripheral <encrypt> can take on the following values: Encryption is not supported at this time Read Command: +WDAV? Query the current DP registration parameter settings. The response is in the form: +WDAV:<DP type>,<encrypt> Test Command: +WDAV=? NAL Research Corporation (451-93156-002A)
  • Page 51  Once the command is entered, the A3LA-RM will indicate to the DTE that it is prepared to receive the message by sending the ASCII encoded string “READY<CR><LF>” (hex 52 45 41 44 59 0D 0A) to the DTE.
  • Page 52 This command is used to transfer a text SBD message from the single mobile terminated buffer in the A3LA-RM to the DTE. This command is similar to +SBDRB but does not provide a length indicator or checksum. The intent of this command is to provide a human friendly interface to SBD for demonstrations and application development.
  • Page 53 <MO flag>: The MO flag indicates the existence of a message in the mobile originated buffer. The response from the A3LA-RM 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...
  • Page 54 <mode>: Disable indicator event reporting; do not send +CIEV unsolicited result codes to the DTE; buffer the most recent indicator event for each indicator in the A3LA-RM. (default) Enable indicator event reporting; buffer the most recent +CIEV unsolicited result code for each indicator when the data port is not in command mode, and flush them to the DTE on return to command mode;...
  • Page 55 Network service availability is equivalent to a signal strength greater than 0. The service availability indicator provides a way for the DTE to wait until the A3LA-RM can start an SBD session without receiving continual notifications of changes in signal strength.
  • Page 56 10 seconds may be experienced. If the A3LA-RM has no SIM, is awaiting a SIM PIN entry, has an invalid SIM, or has otherwise not proceeded to successful registration, the delay in response may exceed the 50 second timeout limit.
  • Page 57 While the A3LA-RM is locked, it is unable to perform any SBD sessions. Any attempts to start a session will return an error code indicating that the A3LA-RM is locked. Command Response: +CULK:<status> where: <status> indicates the lock status of the A3LA-RM following the unlock attempt: Unlocked –...
  • Page 58 Note: While this command is implemented in the A3LA-RM, it may not yet be supported in the Iridium network. Stand by for an Iridium Technical Bulletin announcing network support for this feature. This command controls the presentation of the Calling Line Identity of the calling party in a mobile terminated call via the +CLIP unsolicited result code.
  • Page 59 A.8.102 +IPR – Fixed DTE Rate Set Command: +IPR=<rate>[,<autoflag>] Set the data rate at which the A3LA-RM will accept commands. The change in data rate takes effect after the result code (e.g. OK) is received by the DTE. <rate> takes the following values:...
  • Page 60 Alternatively, the text message may be entered separately:  Upon entering the command “AT+SBDWT”, the A3LA-RM will indicate to the DTE that it is prepared to receive the message by sending the string “READY<CR><LF>” (hex 52 45 41 44 59 0D 0A) to the DTE ...
  • Page 61 GSS. Similarly if there is one or more messages queued at the GSS the oldest will be transferred to the A3LA-RM and placed into the mobile terminated buffer.
  • Page 62 The message, if any, in the mobile originated buffer will be sent from the A3LA-RM to the GSS  If there is a message queued at the GSS it will be transferred to the A3LA-RM and placed into the mobile terminated buffer ...
  • Page 63 Minutes longitude (00-59) Thousandths of minutes longitude (000-999) This command initiates an SBD session between the A3LA-RM and the GSS, setting the SBD Session. The optional sign indicators specify latitude North (+) or South (-), and longitude East (+) or West (-). If omitted, the default is +.
  • Page 64 <MTMSN>: The Mobile Terminated Message Sequence Number (MTMSN) is assigned by the GSS when forwarding a message to the A3LA-RM. This value is indeterminate if the field <MT status> is zero. This wraparound counter can range from 0 to 65535.
  • Page 65 <status>: Disable ring indication Enable ring indication (default) When SBD ring indication is enabled, the A3LA-RM asserts the RI line and issues the unsolicited result code SBDRING when an SBD ring alert is received. Read Command: +SBDMTA? Query the current ring indication mode. The response is of the form: +SBDMTA:<mode>...
  • Page 66 Detached – A3LA-RM is detached as a result of a successful +SBDDET or +SBDI command Not registered – A3LA-RM is attached but has not provided a good location since it was last detached Registered – A3LA-RM is attached with a good location. Note that this may be the case even when the most recent attempt did not provide a good location.
  • Page 67 This session does not transfer any MO or MT messages. Upon triggering in mode 2, “Ask”, the A3LA-RM reports to the DTE that it should register with the system because its location has changed (see <event> below); it is then the responsibility of the DTE to register via +SBDREG or +SBDIX.
  • Page 68 No SBD ring alert SBD ring alert has been received and needs to be answered Note: The RA flag is set whenever the A3LA-RM receives an SBD ring alert; this happens even if the +SBDMTA setting specifies that SBD ring indications are disabled.
  • Page 69 Unsolicited result notifying that a call is waiting +CCWA:<number>,<type>,<class> Note: While this command is implemented in the A3LA-RM, it may not yet be supported in the Iridium network. Stand by for an Iridium Technical Bulletin announcing network support for this feature.
  • Page 70 If the command is successful, the A3LA-RM might return (after contacting the network): +CCWA:1,1 If a remote caller tries to place a voice call to the A3LA-RM while it already has a call in progress, and the Call Waiting service has been made active for class Voice, then the network will send a message to the A3LA-RM.
  • Page 71 Execute command is used to activate or deactivate Call Barring Supplementary Services, SIM Fixed Dialling feature, the SIM card PIN Code, or to enable or disable the Phone Lock feature in the A3LA-RM. A password code (detailed below) may be required, depending on the action chosen.
  • Page 72 This parameter defaults to 7, equal to all classes, but the A3LA-RM only supports Voice Call Barring so this is illegal. Therefore in practice the DTE must supply <classx>=1 when querying or changing the status of any Call Barring facility. When querying (<mode>=2), <passwd>...
  • Page 73 Exec Command: +CSDT=<sidetone enabled> This command controls the A3LA-RM RF board sidetone generation. Enabling sidetone will cause the A3LA-RM to start sidetone generation. Disabling sidetone will cause the A3LA-RM to stop sidetone generation. The following parameter values are currently supported: <...
  • Page 74 This command enables and disables the GPS receiver when the module is idle. When the module is in a call, then the GPS receiver is disabled to avoid interference between the module’s Iridium band transmitter and the GPS band receiver. NAL Research Corporation (451-93156-002A)
  • Page 75 DTR line is brought low and will go back to command mode when the DTR line is brought high again. While in auto dial mode, the A3LA-RM will not respond to AT NAL Research Corporation (451-93156-002A)
  • Page 76 The password will not be reset by AT command &F. When the A3LA-RM is set to echo, all entries are replaced with asterisks (*) instead of the actual typed value. All passwords must be between 8 and 16 characters in length. The factory- set password is ‘temp password’...
  • Page 77 If it is not, the modem will power cycle and return in command mode. <mode> takes the following values: Disable the MPT functionality during a data call. Enable the MPT functionality during a data call. Read Command: ^MPTDC? NAL Research Corporation (451-93156-002A)
  • Page 78 Query the current modem power toggle forced registration.. The response is in the form: ^MPTFR: <mode> Test Command: ^MPTFR=? List the supported modem power toggle forced registration. The response is in the form: ^MPTFR: (supported <mode>s) A.8.133 ^MPTNC- Modem Power Toggle Not in Data Connection NAL Research Corporation (451-93156-002A)
  • Page 79 Set the unit to send data using packets during a data connection. <pkts> can have the following values: Do not use packets Use packets Use streaming encryption Read Command: ^PKTS? Query the current setting if the unit will use packets. Response is in the form: ^PKTS: <pkts> NAL Research Corporation (451-93156-002A)
  • Page 80 <threshold> can have the following values: 1..112 Size in bytes of the payload of a packet. Read Command: ^PKTTH? Query the current value of the packet payload threshold. Response is in the form: ^PKTTH: <threshold> Test Command: ^PKTTH=? NAL Research Corporation (451-93156-002A)
  • Page 81 <blocks>: Max number of encrypted blocks to send before a sync byte is required. Allowable range is 1 - 255. Default is 1. <timeout>: Milliseconds to wait before sending a partial block. Allowable range is 1 – 65535 in units of milliseconds. Default is 1000. NAL Research Corporation (451-93156-002A)
  • Page 82 Read command returns the current streaming encryption settings. Response is in the form: ^SE: =<imei>,<blocks>,<timeout> Test Command: ^SE=? Test command returns lists of memory storages supported by the A3LA-RM. Response is in the form: ^SE: (list of supported <i >s),(list of supported <blocks>s), (list of supported <timeout>s)
  • Page 83 This command controls the volume boost function. Enabling it will increase the analog audio output by 16dB <n>: Disable volume boost Enable volume boost Read Command: ^VOLB? Returns the current value Test Command: ^VOLB=? Returns a fixed message indicating the range of acceptable values. NAL Research Corporation (451-93156-002A)

  • Page 84: Appendix B: S-Register Definitions

    APPENDIX B: S-REGISTER DEFINITIONS S-registers allow control over specific A3LA-RM operations. Some S-registers contain a single numeric value. Other S-registers are bit mapped where individual bits, or sets of bits, control specific functions. B.1 S-Register Commands Commands allow S-registers to be read, written, or simply referenced (i.e. set a pointer to designate the current, referenced S-register).
  • Page 85 Bitmap register where bit 1 reflects line 0  255 modulation method setting, bits 2 and 3 reflect the Wn setting. Bitmap register where bits 0, 1 and 2 reflect the link type setting. 0  255 No action, compatibility only NAL Research Corporation (451-93156-002A)
  • Page 86 0  255 Bearer service capabilities 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  255 0 = +CMGF setting NAL Research Corporation (451-93156-002A)
  • Page 87 S106 1  10 IRLP riwf->isu parameter S107 1  10 IRLP risu->iwf parameter SBD upload message sequence number (high S112 0  255 byte) SBD upload message sequence number (low S113 0  255 byte) NAL Research Corporation (451-93156-002A)
  • Page 88 MSVTR/MSVLS parameters: Bit 0 = –MSVTR: 0 = Disabled (default) 1 = Enabled S127 0  255 Bit 1 = –MSVLS: 0 = No Mute (default) 1 = Mute Enabled Bits 2-5 = Reserved (see IID#2600) NAL Research Corporation (451-93156-002A)

  • Page 89: Appendix C: Summary Of Result Codes

    APPENDIX C: SUMMARY OF RESULT CODES The following tables list the result codes returned by the A3LA-RM. V.25ter/Hayes Result Codes Numeric (V0) Verbose (V1) Description Acknowledges execution of command; voice call connection ‘OK’ has been established. ‘CONNECT’ Data call connection has been established.
  • Page 90 ‘+CMTI: <mem>,<index>’ (unsolicited if enabled). ‘+CMT: <alpha>],<length><CR><LF><pdu>’ SMS-DELIVER message indication as verbose (PDU mode) (unsolicited if enabled). ‘+CDS:<length><CR><LF><pdu>’ (PDU SMS-STATUS-REPORT message as verbose indication (unsolicited if enabled). mode) as verbose ‘+CMS ERROR: <error> SMS command failed. NAL Research Corporation (451-93156-002A)
  • Page 91 Verbose (V1) Description Ready to receive SBD binary message as verbose ‘READY’ data from DTE. as verbose ‘+AREG:<event>,<reg error>’ Auto-registration event report. as verbose ‘+CIEV:<sig><value>’ Indicator event report. as verbose '+ADJANT:<deployed>' User antenna adjustment is required. NAL Research Corporation (451-93156-002A)

  • Page 92: Appendix D: Informative Examples

    Store the configuration as profile 0 AT&Y0 Select profile 0 as the power-up default D.3 Power-on to Sending an SBD Message The DTE will power up the A3LA-RM, wait for the A3LA-RM to acquire the network, and send a 70-byte message. NAL Research Corporation (451-93156-002A)
  • Page 93 (from DTE) Wait for DSR to become asserted AT+CIER=1,0,1 Enable service indication reporting (note that this can be stored in the default configuration) Wait for the A3LA-RM to acquire the +CIEV: 1, 1 network AT+SBDWB=70 READY <binary transfer> Transfer message to A3LA-RM...
  • Page 94 A3LA-RM is registered AT+SBDAREG=2 DTE sets the automatic registration to “Ask” mode … A3LA-RM is moved A3LA-RM notifies DTE that it needs to +AREG: 0, 0 register AT+SBDREG DTE instructs the A3LA-RM to register +SBDREG: 2, 0 Registration is successful D.7 Originating a Data Call...
  • Page 95 D.10 Coordination of +CLCC and +CPAS responses In order to determine the call state of the A3LA-RM, the +CLCC and +CPAS commands may be used. The following table demonstrates how the output of the two commands, as well as the Extended Ring Message, can be combined to provide a more detailed definition of the call state than any one of the results provides by itself.
  • Page 96 In call - Data +CLCC: 000 +CPAS: 004 On hold - Voice +CLCC: 001 +CPAS: 000 or 003 2 or more call states, Call waiting - Voice one of which is 004 e.g. +CPAS: 000 or 003 +CLCC: 000,004 NAL Research Corporation (451-93156-002A)

  • Page 97: Appendix E: Power Consumption

    When the DPL handset is on with the backlight powered up, the DPL handset current drawn is about 350mA at 12V or about 500mA at 5V. Therefore, when a DPL handset is connected to an A3LA-RM, user must account for the added current drawn.
  • Page 98 5.0V to 32V 0.15 0.10 0.05 0.00 Voltage (DC) Figure E1. Average Current Drawn During Standby. 1.25 4.0V to 5.5V 5.0V to 32V 1.00 0.75 0.50 0.25 Voltage (DC) Figure E2. Average Power Consumption During Standby. NAL Research Corporation (451-93156-002A)
  • Page 99 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E3. Average Current Drawn During Standby with DPL Handset. 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E4. Average Power Consumption During Standby with DPL Handset. NAL Research Corporation (451-93156-002A)
  • Page 100 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E5. Average Current Drawn During a Data Switch Call. 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E6. Average Power Consumption During a Data Switch Call. NAL Research Corporation (451-93156-002A)
  • Page 101 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E7. Average Current Drawn During an SBD Transmission. 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E8. Average Power Consumption During an SBD Transmission. NAL Research Corporation (451-93156-002A)
  • Page 102 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E9. Average Current Drawn During an SMS Transmission. 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E10. Average Power Consumption During an SMS Transmission. NAL Research Corporation (451-93156-002A)
  • Page 103 5.0V to 32V Voltage (DC) Figure E11. Average Current Drawn During a Voice Call Using DPL Handset. 4.0V to 5.5V 5.0V to 32V Voltage (DC) Figure E12. Average Power Consumption During a Voice Call Using DPL Handset. NAL Research Corporation (451-93156-002A)

  • Page 104: Appendix F: Description Of The Iridium Network

    ISU is assigned a channel composed of a frequency and time slot in any particular beam. Channel assignments may be changed across cell/beam boundaries and is controlled by the satellite. The system will provide an average link margin of 12 dB. NAL Research Corporation (451-93156-002A)
  • Page 105 (SMS) and router-based unrestricted digital internetworking connectivity solution (RUDICS). Dial-up Data (DAV) SMS, SBD Dial-up Data (DAV) Direct Internet AZ, HI or Fucino PSTN RUDICS RUDICS Server Landline SBD, SMS Modem Internet (e-mail) Address Figure F1. Iridium Network Data Capabilities. NAL Research Corporation (451-93156-002A)
  • Page 106 Iridium network. For those ISU-to-ISU dial-up calls where data transmission delay is critical such as the application of TCP/IP protocol, DAV should be considered in the design. This option eliminates the Iridium gateway once NAL Research Corporation (451-93156-002A)
  • Page 107 , which manages airtime by seamlessly connecting and disconnecting a user through the Iridium system. Airtime charges accumulate only while the call is connected. Improved effective data throughput is achieved through the use of user-transparent data NAL Research Corporation (451-93156-002A)
  • Page 108 IP connection between the Host Application and the Iridium modem. There are three key benefits of using RUDICS over the conventional PSTN circuit switched data connectivity or mobile-to-mobile data solutions: (1) elimination of analog modem training time, (2) increased call connection quality, reliability, and maximized throughput and (3) protocol independence. NAL Research Corporation (451-93156-002A)
  • Page 109 Geo-location errors in the east-west dimension, therefore, are sometimes more than 100 times greater than in the north-south dimension. NAL Research Corporation (451-93156-002A)

  • Page 110: Appendix G: Standards Compliance

    APPENDIX G: STANDARDS COMPLIANCE The A3LA-RM comprises of 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 ~3dBi and adequate shielding.

  • Page 111: Appendix H: Mil-Std-810G Certification

    NAL Research Corporation (451-93156-002A)

  • Page 112: Appendix I: Export Compliance Information

    APPENDIX I: EXPORT COMPLIANCE INFORMATION The A3LA-RM is controlled by the export laws and regulations of the United States of America (U.S.). It is the policy of NAL Research to fully comply with all U.S. export and economic sanction laws and regulations.
  • Page 113 NAL Research Corporation (TN2012-12-V1.0)
  • Page 114 NAL Research Corporation (TN2012-12-V1.0)

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