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Contents
1. Introduction. 7
1.1. Document Scope. 7
1.2. Document Audience. 7
1.3. New Features/Enhancements. 7
2. Abbreviations and Definitions. 8
3. Related Documentation. 9
4. Compatibility. 10
5. Software Release Description. 11
5.1. Release Identification. 11
5.2. Software Tools Versions. 11
5.3. Released Files and Download Processes. 12
6. Software Changes Description. 13
6.1. Corrections/Improvements. 13
6.2. Interface Changes. 18
7. Troubleshooting.. 19
8. Certification Description. 20
9. Restrictions and Additional Information. 21
List of Tables
Table 1. Abbreviations and Definitions. 8
Table 2. Related Documentation. 9
Table 3. Hardware Compatibility. 10
Table 4. Software Compatibility. 10
Table 5. Open AT Firmware Release Information. 11
Table 6. Software Tools Information. 11
Table 7. Corrections/Improvements. 13
Table 8. Interface Changes in 7.54.2.A1. 18
Table 9. Interface Changes in 7.54.0.A1. 18
Table 10. Restrictions and Additional Information. 21
The scope of this document is the Open AT Application Framework 7.54.2.A1 firmware release description for the AirPrime SL8080T/BT/BTA, SL8082T/BT/BTA, and SL8084T/BT/BTA.
This release note may be distributed to all direct and indirect customers.
N/A
Table 1. Abbreviations and Definitions
Abbreviation/Acronym
Definitions
AMSS
AMSS firmware
AvMS
AirVantage Management Services FOTA
BIP
Bearer Independent Protocol
BOOT
Boot loader
DCE
Data Circuit Equipment
DTE
Data Terminal Equipment
DTMF
Dual-tone multi-frequency signaling
DTR
Data Terminal Ready
eUICC
embedded UICC
GPIO
Global Purpose Input Output
HYPER
Virtualization layer
IMEI
International Mobile Equipment Identity
MDN
Mobile Directory Number
ME
Mobile Equipment
MIN
Mobile Identification Number
MS
Mobile Station
NID
Network Identification
OAT_FW
Open-AT firmware
OAT_NVP
Open-AT firmware NV parameters
PDP
Packet Data Protocol
PLMN
Public Land Mobile Networks
PPP
Point-to-Point Protocol
SID
System Identification
SIM
Subscriber Identity Module
STK
SIM Application Toolkit
TCP
Transmission Control Protocol
UART
Universal Asynchronous Receiver Transmitter
UDP
User Datagram Protocol
Table 2. Related Documentation
Ref. #
Doc. #
Rev.
Document Title
[R-1]
4111843
Rev17.0
AT Commands Interface Guide for Firmware 7.54.0.A1
[R-2]
4111844
Rev16.0
ADL User Guide for Open AT Application Framework OS 6.54.0.A1
[R-3]
4115145
Rev15.1
AirPrime - SL808xT,SL808xBT,SL808xBTA - Product Technical Specification & Customer Design Guidelines
[R-4]
2174049
Rev10
Audio feature Application Note
[R-5]
4119150
Rev1.0
Customer Release Notes – OS 6.54.3.A1
Table 3. Hardware Compatibility
AirPrime Compatibility List
AirPrime SL8080T/BT/BTA, SL8082T/BT/BTA, SL8084T/BT/BTA.
Table 4. Software Compatibility
Component
Version
Open AT OS
6.54.3.A1.201609080909
Location Library
1.4.8.201509231354
eCall inband Modem Library
1.3.4.201512300930
Security Library
2.2.4.201610061056
Internet Library
5.58.3.A1.201610210959
Extended AT Application
3.2.0.A1.201610211044
Table 5. Open AT Firmware Release Information
Modem (ATI8)
Services (ATI3)
Identification
"MODEM 3G+","Revision: C04.05.26.00.SL8RDAP R2853 CNSHZ-ED-XP0031 2016/12/29 19:
47:06"
R7.54.2.A1.201701061226.sl808xA
Date of generation
2016/12/29 19:47:06
2017/01/06 12:26
Binary Size
2023972 bytes
Checksum
0x3f5d7cf8
X-modem
"DWL"," C04.05.26.00.SL8RDBT R2853 CNSHZ-ED-XP0031 2016/12/29 19:47:06","","Sier
ra Wireless",0,"","00000000","00000000"
IMEI SV
28
Flash/RAM type
NAND 128 MBytes / RAM 64 Mbytes
Table 6. Software Tools Information
S/W Tools Name
Resource file
Binary Update Tool
R11.2.1105.0
SIERRA_BOOT_C04.05.26.00.SL8RD.cwe
SIERRA_OAT_FW_754_2_A1_7_FULL_sl808xA.cwe
Developer Studio
3.3
MuxConfTool
4.5.6.0
Table 8. Released Files for Firmware Upgrade
Download Option
Files
Upgrade through Developer Studio
Open_AT_Application_Framework_v2-54-2-A1_SL808x_Full_Installer.exe
Upgrade through Binary Update Tool
Bootloader
Firmware
Upgrade through X-modem
SIERRA_BOOT_C04.05.26.00.SL8RD.dwl
SIERRA_OAT_FW_754_2_A1_7_FULL_sl808xA.dwl
Note: R7.54.2.A1.201701061226.SL808xA_7.exe can be used to recover “AirPrime SL808xT/BT/BTA” in bad state. The Firmware .cwe and .dwl contain the operators name latest TS.25 list (formerly, SE.13) dated April 4, 2016
For the upgrade procedure, you can refer to:
· In-line help for upgrade procedure through Developer Studio
· The upgrade procedure through X-modem
Warning: Firmware upgrade from 7.50, 7.52 is not supported.
Table 7. Corrections/Improvements
ID
Description
Impacted Domain
Impacted Sub-Domain
Fixed in
8789
AirPrime performs silent retries for an eCall indefinitely in case there is no response from the network (e.g.- very poor signal strength). Until the eCall succeeds, ATH will not be functional.
AT
Audio
7.54.2.A1
6310
GSM CSD auto answer setting using ATS0 does not work when AT+CGAUTO is set to 0
719
Incorrect +CGEV indication is received when detach process initiated on the Airprime.
Other
643
When AT+WREGC=1 is issued, the Airprime is in spy mode but the unsolicited +CREG: 2 indication indicating the new registration status i.e. not registered on network may not be received sometimes, instead +CREG: 1,5 is received which means Airprime is still registered to the network.
8811
If AT+WREGC=1 or AT+WREGC=0 command is issued after AT+CFUN=4 then port is blocked and no command can be issued further.
6536
GPRS dialup cannot be created on a CDC ACM2 port
6558
Command +CNUM could return +CME ERROR: 3 with very rare SIM/USIM card. In this case AT+CPBS="ON" command also does not work.
Phonebook
6530
Name of more than 16 characters can't be written in "ON" phonebook using UCS2 characters
685
Airprime can sometimes fail to send SMS when a data call is in progress.
SMS
6585
When a PDP connection is attempted with an incorrect/not network-accepted APN, it returns +CME ERROR: 3 (instead of +CME ERROR: 133/533). If the AMS APN is set but doesn't work, Airprime will return +CME ERROR: 3 and will not try to use the customer APNs from CGDCONT.
AVMS
8750
Airprime may sometimes reset when opening/closing USB port in loop, using +WMFM command
DEVICE
USB
8788
Firmware does not read the flash objects correctly at initialization leading to loss of flash object data by the application.
FLASH
8791
On rare occasions, GPIO initialization may be unsuccessful and can lead to GPIO subscription failure.
Service, Pin
12900
AirPrime does not update and apply NITZ time when class is set to CG (GPRS only).
GPRS
644
Airprime may sometimes fail in getting the aiding data (e,g. EED) from HTTP server even after issuing the commands to trigger the download process.
GPS
Xtra
8733
During active voice call, if +VTS command is issued while AT+CMGD=0,4 is in progress, then result of +VTS command is not received.
GSM
8607
If a SIM card has conflicting SIM PIN settings (PIN verification is enable but usage qualifier is set to 0) AT+CPIN? may show incorrect status.
746
Airprime reset can sometimes occur for some specific IOT sim cards as customer will not receive !STKC (it’s AMSS URC)
740
The Airprime could not register on network after it enters SPY mode and camps on the forbidden PLMN cell, then it does not respond in the NO service after exiting the SPY mode
SYS
6556
Airprime reset may occur when UART over SPI port is closed using AT+WMFM command when HAPC mode is enabled on it.
8817
AirPrime may sometimes reset when UART is opened & closed repeatedly using Open UART APIs.
6496
If a voice call is in progress and another incoming call is disconnected by the peer without having been accepted, then first call audio gets muted.
Voice
697
When a voice call is released by the network, the following call returns the error code +CEER 16 even if it's disconnected for no signal.
CALL
7.54.1.A1
8785
AirPrime performs silent retries of eCall indefinitely in case there is no response from the network (eg- very poor signal strength) for an eCall. Until the eCall succeeds, ATH will not be functional.
8710
Response for AT+CIND? Command is not received if it is issued after AT+CFUN=4.
OTHER
6422
The firmware default format of +COPS command is changed from numeric to long alphanumeric.
6400
In case of AT+CFUN=1, Time was reinitialized in AMSS by OAT FW. So before Time is retrieved from Network it is not exact, like for a cold start.
8684
Sometimes closing port can lead to Airprime reset when there are pending responses to be sent over that port.
8662
<SignalLevel> reported by +WPOW deviates from actual signal level due to incorrect calculation in the firmware.
8766
AT+CFBACKUP command fails if there is a residual error file (remains of corrupted NV files) and reports error 684
8706
Supplementary service commands stop working if six or more than six unsolicited +CUSD: 0,xxx indications are received from AMS.
SS
605
RX is mute when the DTMF is on.
AUDIO
6388
Airprime cannot detect SIM card if it is PH-NET PIN enabled.
6456
Facility lock status cannot be queried till the facility lock password is provided using AT+CPIN
8678
Action Command at+wsimpfset returns +CME ERROR: 740 (for specific SIMs) -> SIM switch profile may be indicated as failed.
6406
Incorrect of IMEISV length defined by Qualcomm in QSC6270 PL4.5. Fix the incorrect IMEISV in Provide Local information of STK proactive command on SL808X module.
6407
AT+CNUM return ERROR after OTA SIM Provisioning.
6333
When memory in SIM/USIM is full and ME memory is not full, MS is no more able to receive MTSMS class 2 as no more free memory to store it. MS is supposed to send appropriate ERROR code to the network to allow it to suspend next MTSMS class 2 deliveries. But error code sent by MS is wrong in such a use case
MT SMS
6442
Class 2 SMS received before +WIND: 16 does not send any +CMTI indication but are silently stored in SIM card.
6444
Application cannot read SMS even if +CMTI indication is sent, if it is received after SMSPP service has been loaded but before SMSCB service is loaded.
6365
When performing ATD#xxxx, Airprime rejects the MO call, when it should treat it.
7.54.0.A1
5888
AT+CHLD=1x result in all calls drop if "x" is not a valid call
6385
If EF-OPL entry matching with current LAC and operator points to record 0 in EF-PNN, then PLMN name from NITZ is not displayed as a response to AT+COPS? Command
6374
AT+CLCK="PN" can cause side effect, and bad PLMN lock
8601
AT+WUBS? Read command may return incorrect value if the AirPrime is not able to latch to the band selected by AT+WUBS action command.
8615
At times, response for AT+CREG? Command is +CREG: 1 even after removing SIM card.
8586
+CGREG status shown by AT command is not in line with actual GPRS registration status of Airprime.
8619
Response of AT+CIEV for receives signal quality is not in line with response received for AT+CSQ
8620
Unsolicited +CIEV indication is not received when signal strength changes and +CIEV codes are enabled using AT+CMER command.
8327
Even if main cell information are available, +CME ERROR 30 is sometimes returned when AT+CCED=0,35 is issued
5813
The maximum supported value for ADC Vbatt with AT+WDIAG is 4.3V instead of 4.2V
5937
+WIOM AT command usage may lead to Airprime reset if numerously sent ( more than 30000 times)
5948
No +CGREG indication is sent after GPRS service recovery.
5996
Wrong Error code is obtained for +CEER when the GPRS attach request is rejected for the cause "GPRS not allowed"
8525
When Flash objects storage is intensively used (for example for Phonebook), Application may be frozen during few seconds after switching radio on with AT+CFUN=1,0.
544
Airprime might reset or not respond (occurrence < 10%) when sending AT+CCED
8568
If some badly formed AT commands are sent by application, it could end with a heap memory corruption
8638
Incorrect error code reported by AT+CEER when network rejects PDP context activation request
8542
Very low CPU available during a few seconds after AT+CFUN=0
524
When 8 wires UART is configured with WHCNF and AT+W32K=1 commands, Airprime can’t go into sleep mode due to bad DTR signal.
Sleep Mode
579
The Airprime can't enter into sleep mode after hang up a call
9669
When a SMS sending is requested by using AT+CMGS, the AT parser is blocked waiting for the OK response. In case of huge load in the system (other treatment in progress etc ...), the AT+CMGS treatment may take a long time.
556
Multiple instances of AT command timeouts seen usually when there is an MT SMS at the same time
5497
MS is unable to display the information by AT command for Open Channel as channel identifier is not reported on the AT interface. (BIP feature)
4266
The audio PCM playback stop may lead to Airprime reset.
5388
Hardware PCM interface is not functional (with restrictions AGC, and AVC should be cut)
5647
Rx / Tx AGC are active as default settings
8458
When a second MO call is done after releasing a first call with ATH, the echo canceller doesn't work, unless voice prompt without audio processing is used during call establishment and RxAGC is activated. Sending "AT+ECHO=1,1" prior to each call works around this issue.
8657
Any use of audio in Application can stop sleep mode activation.
494/5782
After a Firmware update, Airprime may not be able to reconnect automatically to AMS, due to an HTTP error received (<7%). After Airprime reset, connection is successful.
5968
AirPrime does connect to the AMS after AT+WDSS=1,1 command is issued in case of an AvMS package is present in flash and end user has not yet accepted the installation of the package (User agreement enable).
9651
ICCID Monitoring not supported with AMS
Monitoring
480
GPIO state is not stable when Airprime is set in Low Power Mode.
8571
USB CDC EEM link cannot receive data after restart of bearer from sleep mode.
8397
SPI read starts failing continuously after stress testing this interface for 2 days at low speed.
SPI
8478
An SPI transaction may fail under SPI stress test
8498
Sometimes, the Airprime resets with watchdog after subscribing and then reading/writing to the SPI bus.
8504
SPI transaction may be sometimes incomplete.
8609
Reset of Airprime in some particular cases of UART_SPI usage (heavy traffic and IOCTL for example)
UART SPI
8564
Reset seen sometimes during boot up when traces are being collected using UART over SPI port.
6199
UART over SPI does not work and data transfer is not possible, because of Bad Chip Select management
8647
stops sending data sent using adl_fcmSendData () from Application to external application using UART over SPI when HAPC mode is enabled and data is sent at a very high rate, along with unsolicited AT responses
8502
According to internal conditions (not easy to get), data received on UART are no more managed, so the AT interface seems frozen or AT answers are delayed. It happens especially in case or Break or Overrun.
6032
The UART is blocked if there is a FIFO overrun
8464
[eUICC] Local ERA-GLONASS subscription swap procedure fails with a specific Oberthur eUICC card.
6149
Stack Corruption occurs on receiving sim toolkit refresh indication. It can leadsto a reset.
6383
Memory leak occurs if STLK auto response is enabled and silent mode is disabled. After too many leaks, it leads to a reset.
8630
software watchdog Reset are got after SIM phonebook activity
PHBK
6240
Value of RP Cause in CP_DATA [RP_ERROR] is wrong when a MT SMS to be stored in SIM is received. That means network receives a wrong indication from the MS when the SIM memory is full. Depending on the way the network uses this information, it could lead the network to take wrong decision about potential SMS retransmission (trying to resend by changing class for example etc ...).
6389
SMS Sent by AirPrime using STK SEND SMS command has invalid SMSC
6336
When "out of envelops" exception happens, a double fault can also happen, so analysis will be very difficult
8550
Users cannot download DEE, after sending username and password with AT+WPPP and activating the PDP context.
TELECOM
DATA
8529
Connected data connection is not disconnected even GSM stack has already been shut down due to overheat.
691
DNS parameters in Activate PDP Context Request is not correct of SL8 and cause the DNS not returned by network.
409
Cannot establish multiple PDP connections with the same APN.
SESSION MGT
6178
Cannot establish multiple PDP connections if PDP context type are different (IP and PPP)
6313
APN used for CGDCONT always truncated to 25 characters
8675
If a SIM REFRESH is initiated by SIM card during a PDP context establishment (AT+CGACT=1,x), final answer (OK) may be not displayed on AT terminal.
No way no treat other AT commands.
516
Airprime resets when roaming between AT&T and Canadian networks along the border using the Jasper SIM
8677
3G band selection with at+wubs command is not taken into effect sometimes.
8540
Very low CPU available for Application in case of disconnection of USB when used in debug (connected to Dev Studio)
TRC
HAPC
This section presents the interfaces that have been modified since Firmware 7.54.0.A1.
Table 8. Interface Changes in 7.54.2.A1
Command
Comment
SERIAL_STATE
Serial state notifications SERIAL_STATE with DCD/DCR On/Off added on dialup creation on FOMA port
+WHCNF
Added parameter to enable only USB Full speed support in the firmware.
Table 9. Interface Changes in 7.54.0.A1
+COPS
Default value for <format> has been changed from 2 (numeric <oper>) to 0 (long alphanumeric format <oper>)
For Open AT Developers, please refer to the Troubleshooting Guide available in source website before contacting customer support.
For AT developers, please contact customer service for support and debugging information.
Product
GCF-CC
NAPRD.03
AirPrime SL8080T/BT/BTA - Sierra Wireless
7.54.2.A1 release
Modem: C04.05.26.00
NAPRD.03 v5.30
Date of Certification: 2017-03-15
AirPrime SL8082T/BT/BTA - Sierra Wireless
GCF-CC v3.61.1
AirPrime SL8084T/BT/BTA - Sierra Wireless
This section presents additional information or restrictions that must be taken into account regarding Firmware 7.54.2.A1. Issues are sorted by alphabetical order of Impacted Domain
Table 10. Restrictions and Additional Information
Issue ID
Description (What/When)
8784
ATH may sometimes not work on Airprime after atd112#64 call is made
6054
AT+CBST=7,0,3 returns OK instead of returning ERROR as <ce>=3 is not supported.
CSD
6063
Airprime becomes unresponsive if AT+DS? is executed before entering the SIM PIN when SIM PIN is enabled
6285
With AT+CGLA, APDU command longer than 235 bytes are not supported (+CME ERROR occurs) and APDU response longer than 243 bytes are not supported too.
5949
Memory leak occurs when AT+WIOM?, AT+WIOM=2 and AT+WIOM=3 commands are issued
8192
+GPSEVERROR: -23,4 appears after AT+GPSSTART
12936
Sometimes Firmware patch installation might fail on Airprime even if DOTA3 feature is enabled.
12745
With a corrupted Application running, command ATI9 can cause Airprime reset.
12098
Wrong RTC time in microseconds may be displayed when adl_rtcGetTime() is used to get and display time.
11989
When OFFWHENUNPLUG feature is enabled and allocate any external interrupt to trigger the Airprime power off, then changing the state of external interrupt doesn't power off Airprime
11988
A command is sent and an unsolicited response (+CREG: 2) is returned before the OK response. Normally the unsolicited response have to be returned after.
11931
When the speed of serial link is set to a speed lower than 9600, speed displayed into the CONNECT response is still 9600 instead of the data call connection rate.
11928
When combination of concatenated commands and single command are given very quickly from an application on Airprime, the response could be in an incorrect order.
2355
AT+WLCK doesn’t work for PS, PP and PC facilities.
11909
Airprime may give incorrect status in +WIND 10 indication for phonebook record change
2835
SIM initialization time can be very long and may vary from one SIM to other.
5669
Call Forwarding command is not correctly managed for Data services (CSD).
5853
+CHLD=2 handling occasionally returns +CME ERROR 30
5967
CHLD Making a 5-party conference call, ATD variants return NO CARRIER
5970
AT+CHLD=1 may lead to no response after answering an incoming call and doing an outgoing call. That means releasing all active calls (if any exist) and accepts the other (held or waiting) call during a multiparty call session may not work
5852
Airprime returns +CME ERROR 30 for +CHLD=2X. That means: placing all active calls on hold except call X during a multiparty call session does not work. Airprime returns +CME ERROR 30 for +CHLD=3. That means: adding a held call to conversation during a multiparty call session does not work.
5026
Incorrect terminal response is sent to the SIM after a proactive Send USSD command is requested.
5031
Incorrect terminal response is sent to the SIM after a proactive Send SS command is requested.
6243
Little glitch at the end of DTMF playback
8411
Audio prompt glitch during hand overs
8413
Audio prompt glitch during call alerting time
11994
When there is already opened flow after making a CSD call, then it is not possible to open an fcm flow.
5848
Aux ADC1 value returned by AT+ADC for numeric mode is wrong. The analog mode is working.
ADC
5820
The terminating flag (0xF9) is not received for CMUX DISC command when UART baud rate is configured to 9600bps or 19200bps.
CMUX
6035
UART over SPI: missing characters in transmission and reception during throughput tests.
UART over SPI
11926
When a protocol like CMUX or WMUX is activated and the WRIM pulseRi mode is set, the physical RI signal of the physical UART interface may not pulse out
V24
11985
An update package is composed of several dwl files that will be installed by the update agent. A CRC check is done by the update agent before installing the update package. So if the update package has been corrupted after its creation, it won't be installed. But if one of the dwl file used at the update package creation has a bad content (not a real dwl file, corrupted dwl file...), the update agent will not detect the bad file before beginning the installation. That-is to-say that some dwl files can be installed before detecting the bad content.
DWL
12234
If user agreement for install has been set, then user is asked for agreement to install ( +WDSI: 3) even after package download has been a failure.
Embedded, RDMS
RDMS
11939
When the Airprime is not registered to the network and application accepts to download the update package from AMS using +WDSR command, Airprime returns OK instead of +CME ERROR: 651.
11935
Command "AT+WDSS=1,1" could return "+CME ERROR: 652" instead of "+CME ERROR: 3" or "+CME: ERROR:133" when invalid APN is given.
11924
Monitoring Airprime on AMS could show network coverage increases when Airprime is in limited services (emergency) or full services (register on a network).
11905
When a power off is made and the protocol stack is hot reset using AT+CFUN=1,0, the Airprime can register to the network but sometimes connection to the AMS may not be available.
11903
Using AMS, a parameter can be configured to send an alert to AMS when a specific value is reached. If the triggered value is reached but the Airprime is not registered on the network, the alert will be sent when Airprime is registered again. However in this case the reported value could be current one i.e. the last updated value (if the parameter value was changed between the moment triggered was reached and the report).
5241
"." and ".." folders are not shown while listing the contents of a File System.
File system
11936
On Airprime if two cell ID's are used repeatedly to perform various A&D related operations, then various operations on these cell ID's might result in errors.
DOTA
11916
Performing A&D related operations on Airprime when re-compaction is done after deleting a cell can result in error, even if the Cell ID exists and attempt is made to read it.
12187
Airprime won't perform GPRS attach procedure when leaving spy mode even If Airprime is manually attached before entering spy mode.
12970
Sometimes, AT+CGACT command does not respond with an OK or ERROR, leading to inability to get WIP_BEV_IP_CONNECTED or WIP_BEV_CONN_FAILED event.
Session
12921
AirPrime reset with watchdog when browsing internet (using EEM or dialup) when network provides good bandwidth.
11947
Call index in the +WIND: 5,x and +WIND: 6,x may be incorrectly equal to 2 even if +WIND: 6,1 response has been received for the first call and the call has been disconnected. This may happen when the second call is made before receiving the CC_REL_IND for first call.
CC
12056
There could be a problem to synchronize on a cell when radio environment is noisy.
CELL_SEL
12094
+CREG: 5 indication may not come if we issue the command "AT+CREG=1" once a roaming SIM is registered to the network.
8754
During active voice call, if +VTS command is issued while AT+CMGD=0,4 is in progress, then result of +VTS command may not be received occasionally.
12305
"POP" noise is much reduced and no distortion anymore in PCM_8kS_16bit play after reset
HWL
12131
Need external reset and Increase in the DSP reset time and time settling if the problematic DSP initialization still exists.
Modem
12130
In some specific customer applications where the JTAG pins are non-connected, Airprime very rarely cannot start properly, keep on resetting and eventually go to the download recovery mode. A power off is needed to exit this state and restart properly.
12911
AT+CGACT command may lead to Airprime reset if password entered is empty while using CHAP protocol which is configured using AT+WPPP
MMT
12753
Playing a sequence of DTMF tones on voice call Tx using adl_DTMFPlayExt() leads to playback of only the first DTMF and that too twice on the receiving side and all the other DTMFs are not played.
OAT
12918
Airprime reset can occur if flash objects used by MMT layer are corrupted.
12198
In some cases the application tries to print the semaphore errors repeatedly, Which may cause the Airprime to reset.
12146
CTS of the Airprime goes low when hardware flow control on UART is disabled. An external hardware may not be able to communicate to the Airprime over UART if it has hardware flow control enabled.
11934
Airprime reset can occur with the activation of OSA on removing the remote SIM before +WIND: 4 indication. The reset is because of releasing the SIMRspData buffer which was not allocated due to SIM removal.
11933
After OSA service subscription with adl_osaSubscribe() function, if application try to unsubscribe to the OSA service without to post back ATR request to the Firmware (after an ADL_OSA_EVENT_ATR_REQUEST or ADL_OSA_EVENT_ADPU_REQUEST event) then un-subscription can fail. OSA service is now not closed and it shall not be possible to subscribe again to it.
12274
If memory is corrupted by RTK, then Airprime could be in AT Mode but the application may still not start
RTK
MEM_MGT
3127
SIM Initialization time on Airprime could be sometimes longer (WIND4: 43 sec)
5575
[eUICC] Local ERA-GLONASS subscription swap procedure may be long (5 seconds) with specific eUICC.
12048
Few SIM may not be detected on Airprime and could not be used
11944
When SIM removal feature is deactivated and open the Sim rack to wait for +CME ERROR:13, then the AT+CFUN=0 command may not be answered.
8798
12708
Switching to GLONASS Profile is not successful with some UICC operators when voice or packet session is in progress.
4963
STK proactive command "Language notification" is not supported.
6012
No terminal response is sent to the SIM for GET INKEY, backward move.
2303
When a STK SEND SS is requested, the action is correctly done, but the Terminal response sent back to the SIM doesn't contain additional information (Operation Code and SS Parameters).
4197
Incorrect TERMINAL RESPONSE is received if call attempt resulting from a proactive command fails.
6445
SMS indication for class 2 may be lost if module is reset before +WIND: 16 indication
6332
When ME and SM memory are full regarding to SMS storage and a SMS is deleted by user in ME memory, the "memory available procedure" is not performed. Depending on the network strategy, MTSMS may be blocked in network up to SMS SM deletion.
5550
Empty SMS in text and PDU mode can’t be sent (+CMS ERROR: 513)
8272
Incoming SMS may be never received in case Airprime is in OFF mode state when SMS is sent.
8138
When sending SMS (PDU mode) continuously without any delay, SMS delivery reports are not noticed through +CDS.
12781
Airprime may sometimes reset with exception in case of stack overflow