ISU AT Command Reference

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ISU AT Command ReferencePhase VI AT Commands has format:[+|-]DDMM.MMM,[+|-]dddmm.mmmwhere:DD Degrees latitude (00-89)MM Minutes latitude (00-59)MMM Thousandths of minutes latitude (000-999)ddd Degrees longitude (000-179)mm Minutes longitude (00-59)mmm Thousandths of minutes longitude (000-999)This command initiates an SBD session between the ISU and the GSS, setting the SBD SessionThe optional sign indicators specify latitude North (+) or South (-), and longitude East (+) or West (-). Ifomitted, the default is +.For example,AT+SBDIX=5212.483,-00007.350corresponds to 52 degrees 12.483 minutes North, 0 degrees 7.35 minutes West.Command Response:+SBDIX:,,,,,where::MO session status provides an indication of the disposition of the mobile originated transaction. The fieldcan take on the following values:Gateway-reported values:0 MO message, if any, transferred successfully.1 MO message, if any, transferred successfully, but the MT message in the queue was toobig to be transferred.2 MO message, if any, transferred successfully, but the requested Location Update wasnot accepted.3..4 Reserved, but indicate MO session success if used.5..8 Reserved, but indicate MO session failure if used.10 GSS reported that the call did not complete in the allowed time.11 MO message queue at the GSS is full.12 MO message has too many segments.13 GSS reported that the session did not complete.14 Invalid segment size.15 Access is denied.ISU-reported values:16 ISU has been locked and may not make SBD calls (see +CULK command).17 Gateway not responding (local session timeout).18 Connection lost (RF drop).19 Link failure (A protocol error caused termination of the call).20..31 Reserved, but indicate failure if used.Version 2.6March 30, 2006 76
ISU AT Command ReferencePhase VI AT Commands32 No network service, unable to initiate call.33..34 Reserved, but indicate failure if used.35 ISU is busy, unable to initiate call.36.. Reserved, but indicate failure if used.:The Mobile Originated Message Sequence Number (MOMSN) is a value assigned by the ISU whensending a mobile-originated message to the GSS. This value is incremented each time an SBD session issuccessfully completed between the ISU to the GSS. This wrap around counter can range from 0 to 65535.:The MT status provides an indication of the disposition of the mobile terminated transaction. The field cantake on the following values:0 No SBD message to receive from the GSS.1 SBD message successfully received from the GSS.2 An error occurred while attempting to perform a mailbox check or receive a messagefrom the GSS.:The Mobile Terminated Message Sequence Number (MTMSN) is assigned by the GSS when forwarding amessage to the ISU. This value is indeterminate if the field is zero. This wrap aroundcounter can range from 0 to 65535.:The MT length is the length in bytes of the mobile terminated SBD message received from the GSS. If nomessage was received, this field will be zero.:MT queued is a count of mobile terminated SBD messages waiting at the GSS to be transferred to the ISU.10.12 +SBDDSC - Short Burst Data: Delivery Short CodeSet Command: +SBDDSC=Set the Delivery Short Code (DSC), which provides dynamic routing or control information for MO or MTmessages. This is an 8-bit value providing the ability to set individual fields. Value 0x80 (hexadecimal)sets the most significant bit. Value 0x01 sets the least significant bit. Flag values can be added together toachieve a combination of settings. Some fields are overridden during certain SBD sessions (e.g. an+SBDREG registration session sets flag 0x80).Enable or disable ring indications for SBD Ring Alerts.:0..255 DSC to be used for subsequent MO messages (0 default).0x800x40Hold MT message delivery.Leave MT message in queue after delivery.0x20 Destination in MO payload.Read Command: +SBDDSC?Query the current Delivery Short Code. The response is of the form:+SBDDSC:Version 2.6March 30, 2006 77
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ISU AT Command ReferenceIntroductio
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ISU AT Command ReferenceModem Overv
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ISU AT Command ReferenceCommand Ove
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ISU AT Command ReferencePhased Impl
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ISU AT Command ReferencePhase I AT
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