Page 1
Iridium 9523 Product Developers’ Guide (PRELIMINARY DRAFT) I r i d i u m C o m m u n i c a t i o n s , I n c . P r o p r i e t a r y & C o n f i d e n t i a l I n f o r m a t i o n...
Page 2
(“Iridium”) assume no responsibility for any typographical, technical, content or other inaccuracies in this document. Iridium reserves the right in its sole discretion and without notice to you to change Product specifications and materials and/or revise this document or withdraw it at any time. The Product Developer assumes the full risk of using the Product specifications and any other information provided.
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Revision History Revision Date Comment Apr 6, 2011 First Draft May 9, 2011 Second Draft Following Internal Review Jul 26, 2011 Revision sent with Alpha prototype Developer’s Kit...
List of Abbreviations ..........................8 Product Overview ..........................9 Key Features .......................... 9 Iridium 9523 Packaging and Regulatory Certification ............9 FCC Warning Statement ...................... 10 Industry Canada Warning Statement ................... 10 ...
Page 5
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Extended Commands ......................32 Command and Response Characters.................. 33 Command Entry ........................34 ...
Page 6
5.7.102 +IPR - Fixed DTE Rate ....................76 5.7.103 +SBDWT - Short Burst Data: Write a Text Message to the Iridium 9523 ....76 5.7.104 +SBDDET - Short Burst Data: Detach ................. 77 ...
Page 7
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 5.7.107 +SBDDSC - Short Burst Data: Delivery Short Code ........... 81 5.7.108 +SBDMTA - Short Burst Data: Mobile-Terminated Alert ..........82 ...
Data Communications Equipment. In this Product, DCE refers to the Iridium 9523 (V.24 signal) Data Set Ready. This signal, from the Iridium 9523, indicates readiness to accept communication over the data port Data Terminal Equipment. In this Product, DTE refers to the FA (V.24 signal) Data Terminal Ready.
1 Product Overview 1.1 Key Features The Iridium 9523 is a voice and data transceiver module for the Iridium global satellite network. It is designed to be integrated with field application (FA) hardware and software to produce a solution designed for a specific application or vertical market. These solutions drive a wide range of applications in industries such as Oil and Gas, Rail, Maritime, Aeronautical, Utilities and Government/Military.
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 EN61000-4-2 : 1995/A2 : 2001 Part 4.2 EN61000-4-3 : 2002 Part 4.3 FCC CFR47 parts 2, 15, and 25 EN61000-4-4 : 2004 EN61000-4-6 : 1996/A1 : 2001 Part 4.6...
Product Developers should read this document in conjunction with the “Software Release Notes” relevant to the revision of the software that is loaded into their Iridium 9523. The software release notes are available on the Iridium for Partners section of the Iridium.com website.
Page 12
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 [11] ETS 300 515: Digital Cellular Telecommunications System (Phase 2) (GSM); Call Forwarding (CF) Supplementary Services (GSM 02.82) [12] 3GPP TS 27.007: 3...
Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 2 Physical Specification For illustrative purposes, pictures of the Iridium 9523, fitted with its aluminum shielding frame, are shown in Figure 1. Figure 1: Photos of Iridium 9523 Top View Bottom View Iridium Communications, Inc.
The two height values provided in Table 2 do not include the height of the compressible gasket on the bottom of the 9523 that will mate to the FA board. It is assumed that this gasket will compress to near zero thickness if screws are torqued sufficiently.
Figure 2: Dimensions of the Iridium 9523 (Dimensions in millimeters) 2.2 Field Application Board Mounting The 9523 is designed to be mounted to an FA board as illustrated in Figure 3. Iridium Communications, Inc. Distribution of Guide Restricted Proprietary & Confidential Information...
Page 16
In Figure 4, area ‘A’ of the FA board sits under sensitive analog circuitry on the 9523’s bottom side, and it is essential that no components or tracks on the FA board appear in this area; it must be filled entirely with a solid ground plane on the top layer of the FA board.
Page 17
Subject to Change Without Notice Revision 2.6 The FA board must provide a sufficient margin free of conductive elements around the 9523 perimeter in order to avoid electrical shorts with the 9523. This is indicated by the ‘SMT Placement Keepout Zone’.
It is expected, based on testing performed on a system that incorporates the Iridium 9523, that the Iridium 9523 would pass the tests listed in Table 4. A later revision of this document will specify which of these the Iridium 9523 has been tested to in conjunction with a test interface board that offers no protection.
Data sheets on these connectors can be found at: http://www.molex.com Pin numbering schemes for the Molex connectors on the Iridium 9523 and the host FA board are shown in Figure 5 (both pictures show the pin-out when looking down onto the boards).
Error! Reference source not found. location and rotation with respect to the corner of the Iridium 9523 board. This view is for illustrative purposes only. This view designation is when looking into the user connector towards the Iridium 9523.
Page 21
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Signal direction Signal Name Signal function Signal group (WRT modem) CODEC_PCMIN Data from modem PCM audio port 1 CODEC_PCMSYNC...
The Iridium 9523 starts up when power is applied and the TRX_ON input is high. As long as the input voltage is applied, logic high on this line turns the Iridium 9523 on and a logic low turns it off. If this line is not required then it must be connected directly to the VBAT supply.
Page 23
The current peak in the VBOOST rail lasts for 8.3ms and repeats every 90ms (this is the period of a frame in the Iridium air interface). When not transmitting, the VBOOST current returns to zero. The VBOOST current was measured when the Iridium 9523 was connected to a 27V power source that could meet its instantaneous power requirements (around 25W).
3.3 PCM Digital Audio The Iridium 9523 has two 15-bit linear PCM digital audio ports, though only one of these can be in use at any time. The active port is selected using the AT+CAR command. This setup allows the FA board to provide two parallel audio paths and switch between them through software instead of hardware.
UC_DATX PCM data input UC_DARX Note: the data signal names on Port 2 are defined from the point of view of the Iridium 9523. 3.3.3 11Hz Signal for Manufacturing and Regulatory Testing An external ‘frame tick’ signal needs to be passed to the Iridium 9523 during regulatory radio testing of the host system, and possibly also during manufacturing testing.
The DPL port is a three-wire asynchronous serial port. It carries 8-bit, no parity data at 115,200 baud. The DPL port enables peripherals such as handsets and SIM card readers to be interfaced to the Iridium 9523. The interface utilizes an Iridium proprietary communication bus not detailed in this document.
The Iridium 9523 drives DCD ON to indicate that the Iridium link is active Note that the Ring Indicator (RI) pin is used by the Iridium 9523 to indicate that a Mobile Terminated SBD (MT-SBD) message is queued at the Gateway. The Field Application can monitor this pin and use appropriate AT Commands to command the Transceiver to retrieve the MT-SBD message.
The inputs on the Iridium 9523 Data/Fax serial port (RTS, DTR and TXD) will operate correctly at 3.3V digital signal levels. The five outputs from the Iridium 9523 Data/Fax serial port (DCD, DSR, CTS, RI and RXD) are all at 3.3V digital levels.
External GPS Receiver Switch If the Iridium 9523 is used near a GPS receiver, it is possible that the input circuitry of the GPS receiver could be damaged by the output power of the Iridium transmitter, especially if the two devices share a single antenna.
Additional information can be found at: http://www.i-pex.com Note that the RF connector on the Iridium 9523 is not mounted directly to the FA board along with the user interface connector. It must be attached to the FA board through a coaxial cable.
RF component between the Iridium 9523 and the antenna should not exceed 3 dB. Implementation loss higher than this will affect the Iridium link performance and quality of service. Solutions with a loss higher than 3 dB will not meet the requirements of Iridium Solution Certification.
Some extended commands have a single execution mode. No further syntax is added after the prefix and body of the command. For example, AT+GSN is entered as shown to query the Iridium 9523 for its assigned serial number (i.e. IMEI).
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Some extended commands incorporate set, read, and test modes. For example, AT–MSVTR is entered as AT–MSVTR=n in set mode to enable/disable receipt of DTMF messages. It is entered as AT–...
5.5 Command Entry An AT command is a string of characters sent by the FA to the Iridium 9523 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.
Result codes can be represented by text if the Iridium 9523 is in verbose mode or with numbers if in numeric mode. The command ATVn informs the Iridium 9523 whether to respond in verbose or numeric mode.
Revision 2.6 5.7 Command Set Description 5.7.1 AT - Attention Code This is the prefix for all commands except A/ and +++. When entered on its own, the Iridium 9523 will respond OK. 5.7.2 A/ - Repeat Last Command Repeat the last command issued to the Iridium 9523 unless the power was interrupted or the unit is reset.
(default). If DTR transitions from ON to OFF during either in-call command mode or in-call data mode, the call will drop to on-hook command mode and the Iridium 9523 will reset to AT command profile 0.
Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 5.7.13 &Kn - Flow Control Select the flow control method between the Iridium 9523 and FA. Disables flow control Enables RTS/CTS flow control (default) Enables XON/XOFF flow control Enables both RTS/CTS and XON/XOFF flow control 5.7.14 &Mn - Asynchronous/Synchronous Mode...
Select profile 1 5.7.20 \Kn - Control Break Control the response of the Iridium 9523 to a break received from the FA or the remote modem according to the parameter specified. The response is different in three separate states: When a break is received from FA when Iridium 9523 is in data transfer mode:...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 300 bps V.110 1200 bps V.110 2400 bps V.110 4800 bps V.110 9600 bps V.110 <name> takes the following value: data circuit asynchronous <ce>...
Page 41
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Enable numeric error reporting Enable verbose error reporting An example of an error report is: +CME ERROR: <y> where <y> can be the number or text listed below:...
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 Iridium 9523. <serv> can have one of the following values: ASYNC asynchronous transparent...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Read Command: +CR? Query the current service reporting level settings. The response is in the form: +CR: <mode> Test Command: +CR=? List the supported reporting levels.
Revision 2.6 <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 Iridium 9523: +DR: NONE No data compression +DR: V42B...
Page 45
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 operation not allowed (identical to 302) call barred SM transfer rejected destination out of service unidentified subscriber facility rejected...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 SIM SMS storage full no SMS storage capability in SIM error in MS memory capacity exceeded unspecified error phone failure...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Test command returns the list of supported <mode>s. Response is in the form: +CMGF: (list of supported <mode>s) 5.7.37 +CMGL - List SMS Messages Exec Command: +CMGL[=<stat>]...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 2 - MO message unsent 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.)
Iridium 9523-FA link is reserved (e.g. in in-call data mode). Otherwise forward them directly to the FA. Buffer unsolicited result codes in the phone when Iridium 9523-FA link is reserved (e.g. in in-call data mode) and flush them to the FA after reservation. Otherwise forward them directly to the FA.
(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” and the numeric format is “90103”. These are the only values accepted.
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 +COPS: [list of supported (<stat>,long alphanumeric <oper>,short alphanumeric <oper>,numeric <oper>)s] [,,(list of supported <mode>s),(list of supported <format>s)] where <stat> indicates:...
<storage> takes the following values: SIM fixed dialing phonebook Last ten calls dialed phonebook Iridium 9523 phonebook combined Iridium 9523 and SIM phonebook (default) SIM phonebook Read Command: +CPBS? Read command returns currently selected memory, the number of used locations and total number of locations in the memory.
Iridium 9523 is waiting for SIM Card PIN1 Code to be given. SIM PUK Iridium 9523 is waiting for SIM PUK to be given (because SIM PIN1 is blocked). SIM PIN2 Iridium 9523 is waiting for SIM PIN2 to be given.* SIM PUK2 Iridium 9523 is waiting for SIM PUK2 to be given (because SIM PIN2 is blocked).
Set command controls the presentation of an unsolicited result code +CREG: <stat> when <n>=1 and there is a change in the Iridium 9523 network registration status, or code +CREG: <stat>[,<lac>,<ci>] when <n>=2 and there is a change in the registration status of the phone.
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Read command returns the current service center address. Response is in the form: +CSCA: <sca>,<tosca> 5.7.52 +CSCB - Select Cell Broadcast Message Types Read Command: +CSCB? Read command returns the current values for <mode>, <mids>...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 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 phone.
5.7.62 D - Dial Dial a data or voice call number. The dial command causes the Iridium 9523 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.
Enable auto-answer after n rings 5.7.65 Xn - Extended Result Codes Select the response set to be used by the Iridium 9523 when informing the FA 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;...
<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 Iridium 9523 instead of RING, where <type> can be one of the following: ASYNC...
There is no blank space between the two double quotes. Since time zone feature is not supported in Iridium, this particular field (zz) is ignored if it is entered. The range of valid years is between 1970 and 2058.
Receiving of DTMF disabled (default) Receiving of DTMF enabled If receiving DTMF is enabled, the Iridium 9523 sends the following unsolicited result code every time a DTMF inband signaling data is received from the network while in a voice call: –MSTRX: <tone>,<event>...
<time_stamp> is assigned by the Iridium 9523 when the geolocation grid code received from the network is stored to Iridium 9523 internal memory. Current Iridium system time, which is a running count of 90 millisecond intervals, is used for the time stamp. Time stamp is a 32-bit integer displayed in hexadecimal form.
Exec Command: +CLCC Returns the current call status of the Iridium 9523. 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. incoming calls and held calls.
<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->Iridium 9523) and can take the following values: 1-105. Default is 105. <k2>...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Read Command: +WIRLP? Query the actual IRLP parameters resulting from the negotiation (XID exchange) at the start of the most recent data call.
Exec Command: +SBDWB=[<SBD message length>] This command is used to transfer a binary SBD message from the FA to the single mobile originated buffer in the Iridium 9523. The mobile originated buffer can contain only one message at any one time. Iridium Communications, Inc.
Revision 2.6 Once the command is entered, the Iridium 9523 will indicate to the FA 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 FA.
This command is used to transfer a text SBD message from the single mobile terminated buffer in the Iridium 9523 to the FA. 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.
This command will transfer the contents of the mobile originated buffer to the mobile terminated buffer. Developers of FA can use this command to test reading and writing to the Iridium 9523 without actually initiating SBD sessions with the ESS.
5.7.94 +CIER – Indicator Event Reporting Set Command: +CIER=[<mode>[,<sigind>[,<svcind>]]] The set command enables or disables sending of the +CIEV unsolicited result code by the Iridium 9523 in case of indicator state changes. <mode> controls the processing of the +CIEV unsolicited result codes.
Network service availability is equivalent to a signal strength greater than 0. The service availability indicator provides a way for the FA to wait until the Iridium 9523 can start an SBD session without receiving continual notifications of changes in signal strength.
SBD ring alert received Note: It is valid for the Iridium 9523 to receive a telephony ring alert and an SBD ring alert at the same time. Assertion of the RI signal indicates only the presence of an alert; this command may be used to determine the type(s) of ring alert.
Subject to Change Without Notice Revision 2.6 While the Iridium 9523 is locked, it is unable to perform any SBD sessions. Any attempts to start a session will return an error code indicating that the Iridium 9523 is locked.
5.7.100 +CLIP – Calling Line Identification Presentation Exec Command: +CLIP=<n> Note: While this command is implemented in the Iridium 9523, it may not yet be supported in the Iridium network. Stand by for an Iridium Technical Bulletin announcing network support for this feature.
5.7.102 +IPR - Fixed DTE Rate Set Command: +IPR=<rate>[,<autoflag>] Set the data rate at which the Iridium 9523 will accept commands. The change in data rate takes effect after the result code (e.g. OK) is received by the FA. <rate> takes the following values:...
Alternatively, the text message may be entered separately: Upon entering the command “AT+SBDWT”, the Iridium 9523 will indicate to the FA 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 FA ...
This instructs the GSS to disable (detach) SBD ring alerts for the calling Iridium 9523. Successful completion of the detach command implies that the GSS has performed the requested detach action and the Iridium 9523 is no longer registered for SBD ring alerts. This session does not transfer any MO or MT messages.
The message, if any, in the mobile originated buffer will be sent from the Iridium 9523 to the GSS If there is a message queued at the GSS it will be transferred to the Iridium 9523 and placed into the mobile terminated buffer Iridium Communications, Inc.
Page 80
Thousandths of minutes longitude (000-999) This command initiates an SBD session between the Iridium 9523 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 +.
<MTMSN>: The Mobile Terminated Message Sequence Number (MTMSN) is assigned by the GSS when forwarding a message to the Iridium 9523. This value is indeterminate if the field <MT status> is zero. This wraparound counter can range from 0 to 65535.
<status>: Disable ring indication Enable ring indication (default) When SBD ring indication is enabled, the Iridium 9523 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 83
Thousandths of minutes longitude (000-999) This command initiates an SBD session between the Iridium 9523 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 +.
Upon triggering in mode 2, “Ask”, the Iridium 9523 reports to the FA that it should register with the system because its location has changed (see <event> below); it is then the responsibility of the FA to register via +SBDREG or +SBDIX.
<MO flag>: The MO flag indicates the existence of a message in the mobile originated buffer. The response from the Iridium 9523 is one of the following numeric codes: No message in mobile originated buffer Message in mobile originated buffer <MOMSN>:...
SBD ring alert has been received and needs to be answered Note: The RA flag is set whenever the Iridium 9523 receives an SBD ring alert; this happens even if the +SBDMTA setting specifies that SBD ring indications are disabled.
Subject to Change Without Notice Revision 2.6 +WANTST This command causes the IRIDIUM 9523’s internal state-change history to be deleted, so that the next time it polls the antenna status, a +ANTST:<ant_status> unsolicited message will be generated regardless of state.
Unsolicited result notifying that a call is waiting +CCWA:<number>,<type>,<class> Note: While this command is implemented in the Iridium 9523, it may not yet be supported in the Iridium network. Stand by for an Iridium Technical Bulletin announcing network support for this feature.
Page 89
+CCWA:1,1 If a remote caller tries to place a voice call to the Iridium 9523 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 Iridium 9523.
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 Iridium 9523. A password code (detailed below) may be required, depending on the action chosen.
BIC-Roam (Bar Incoming Calls when Roaming outside the home country) (refer GSM 02.88 [4] clause 2). In Iridium it is not possible to roam (there is only one “home country”), so this facility should not be exercised by a user interface.
Exec Command: +CSDT=<sidetone enabled> This command controls the transceiver board sidetone generation. Enabling sidetone will cause the Iridium 9523 to start sidetone generation. Disabling sidetone will cause the Iridium 9523 to stop sidetone generation. The following parameter values are currently supported: <...
Subject to Change Without Notice Revision 2.6 Note: While this command is implemented in the Iridium 9523, it may not yet be supported in the Iridium network. Stand by for an Iridium Technical Bulletin announcing network support for this feature.
Page 94
The +XCSI message extends the information available in the +DPLCI announcement. It will be sent whenever there is a non-data call state change in the Iridium 9523’s internal Call Control (MMICC) state machines, including during a voice call session (possibly with multiple concurrent calls) when any call becomes held/active/waiting.
Revision 2.6 The call index fields identify the call records for the active and held calls. Note that the IRIDIUM 9523 implementation allows at most one held call at a time. The index values can be used in the “<1x>” and “<2x>”...
GPS band receiver. Note: the GPS receiver (and associated circuitry) is optional and is not fitted to some revisions of the Iridium 9523 transceiver board. In this case all forms of the +GPSSTA command will return an error. Exec Command: +GPSSTA=<mode>...
Subject to Change Without Notice Revision 2.6 6 S-Register Definitions S-registers allow control over specific Iridium 9523 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.
Page 98
Line feed character 0-32 Backspace character 0-255 Wait for dial-tone No action, compatibility only 0-255 Communication standard used by Iridium 9523 No action, compatibility only 0-255 Pause time for comma No action, compatibility only 0-255 Carrier detect response time No action, compatibility only...
Page 99
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Sr=n Command Register Range Default Description Write Protected Number in SAC0201 0-255 Bitmap register: bit 0: autobaud setting bits 1-3: FA baud rate...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Sr=n Command Register Range Default Description Write Protected Number in SAC0201 0-255 Bitmap register for extended result codes (overrides Wn setting).
Page 101
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Sr=n Command Register Write Protected Range Default Description Number in SAC0201 5 = +CBST parameter <ce> setting 6 = +CRC setting...
Page 102
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Sr=n Command Register Write Protected Range Default Description Number in SAC0201 S106 1-10 IRLP riwf->isu parameter S107 1-10 IRLP risu->iwf parameter...
Page 103
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Sr=n Command Register Write Protected Range Default Description Number in SAC0201 command. OK response given Comply with &Dn command specified reaction to DTR ON to OFF transitions.
Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 7 Summary of Result Codes The following tables list the result codes returned by the Iridium 9523. Table 18: V.25ter/Hayes Result Codes Numeric (V0) Verbose (V1) Description ‘OK’...
Page 105
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 ’CARRIER 1200/75 ‘ Data rate detected at V.23 backward channel. ’CARRIER 1200’ Data rate detected at 1200 bps. ’CARRIER 2400’...
Page 106
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Table 20: GSM 7.05 Result Codes Numeric Verbose (V1) Description as verbose ‘+CMTI: <mem>,<index>’ SMS-DELIVER message indication (unsolicited if enabled). See section 5.7.42.
A single format will be used in a future revision of this document. 8.1 Unit Identification When beginning to build a communication link, a general FA application controlling the Iridium 9523 should confirm the type of Iridium device to which it is connected.
(from FA) Wait for DSR to become asserted Enable service indication reporting (note AT+CIER=1,0,1 that this can be stored in the default configuration) Wait for the Iridium 9523 to acquire the +CIEV: 1,1 network AT+SBDWB=70 READY Transfer message to Iridium 9523 <binary transfer>...
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 To Transceiver To FA (from Transceiver) Description (from FA) Transceiver informs FA that a 90-byte message was successfully received with...
Call connected at FA rate of 9600 CONNECT ASYNC 9600 8.9 Answering a Data Call The Iridium 9523 is capable of accepting mobile terminated data calls. The following is a sequence of commands that can be used to establish the connection. To Transceiver...
8.12 Coordination of +CLCC and +CPAS responses In order to determine the call state of the Iridium 9523, 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.
Subject to Change Without Notice Revision 2.6 Supported AT Commands Table 22 lists the AT commands supported by the Iridium 9523. The list of supported commands is a subset of commands taken from Iridium’s AT Command Specification. Table 22: Supported AT Commands...
Page 113
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Command Description See Section +CLCC Request Current Call Status 5.7.77 +CLCK Facility Lock 5.7.117 +CLIP Calling Line Identification Presentation 5.7.100...
Page 114
Short Burst Data: Read Binary Data from Iridium 9523 5.7.86 +SBDREG Short Burst Data: Network Registration 5.7.109 +SBDRT Short Burst Data: Read a Text Message from the Iridium 9523 5.7.87 +SBDS Short Burst Data: Status 5.7.90 +SBDSX Short Burst Data: Status Extended 5.7.111...
Page 115
Iridium Communications, Inc. Information Contained in this Guide Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice Revision 2.6 Command Description See Section +WFRNG Force IRLP Renegotiation 5.7.81 +WIRLP Iridium Radio Link Protocol 5.7.80 +WTM IRLP Test Mode 5.7.82...