Quectel LTE Standard MMS Installation and operating instructions

LTE Standard MMS
Application Note
LTE Standard Module Series
Rev. LTE_Standard_MMS_Application_Note_V1.1
Date: 2020-02-20
Status: Released
www.quectel.com

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About the Document
Revision History
Version
Date
Author
Description
1.0
2017-12-08
Duke XIN/
Haley HUANG
Initial
1.1
2020-02-20
Domingo DENG/
Cara TAO
1. AddedAT command syntax (Chapter 1.2).
2. Added commands AT+QMMSCFG?,
AT+QMMSEDIT?, AT+QMMSEND? and
AT+QMMSCFG="connecttimeout" (Chapter 2).
3. Added parameter <function_configure> and
updated the response description for
AT+QMMSEDIT (Chapter 2.2).

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Contents
About the Document.................................................................................................................................. 2
Contents...................................................................................................................................................... 3
Table Index.................................................................................................................................................. 4
1Introduction......................................................................................................................................... 5
1.1. The Process of Sending MMS Messages ................................................................................. 5
1.2. AT Command Syntax................................................................................................................. 6
2Description of MMS AT Commands.................................................................................................. 7
2.1. AT+QMMSCFG Configure Parameters of MMS..................................................................... 7
2.2. AT+QMMSEDIT Edit MMS Messages .................................................................................. 10
2.3. AT+QMMSEND Send MMS Messages................................................................................. 12
3Examples ........................................................................................................................................... 14
3.1. Add Recipients......................................................................................................................... 14
3.2. Add CC Recipients or BCC Recipients.................................................................................... 14
3.3. Edit the Title of MMS Messages.............................................................................................. 15
3.4. Add Attachments...................................................................................................................... 15
3.5. Clear all Contents of MMS Messages ..................................................................................... 17
3.6. Send MMS Messages.............................................................................................................. 17
4Error Handling................................................................................................................................... 21
4.1. Executing MMSAT Commands Fails ...................................................................................... 21
4.2. PDPActivation Fails................................................................................................................. 21
4.3. Error Response ofAT+QMMSEND.......................................................................................... 21
5Summary of <err> Code................................................................................................................... 23
6Description of HTTP(S) Response Codes...................................................................................... 25
7Appendix A References.................................................................................................................... 26

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Table Index
Table 1: Types of AT Commands and Responses....................................................................................... 6
Table 2: Summary of Error Codes.............................................................................................................. 23
Table 3: Description of HTTP(S) Response Code.....................................................................................25
Table 4: Related Documents......................................................................................................................26
Table 5: Terms and Abbreviations..............................................................................................................26

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1Introduction
Quectel LTE Standard modules provide MMS application interface for sending messages including
multimedia objects (image, audio, rich text, etc.). This document is a reference guide to all the AT
commands defined for MMS.
This document is applicable to the following Quectel LTE Standard modules.
EC2x (EC25, EC21, EC20 R2.0 and EC20 R2.1)
EG9x (EG95 and EG91)
EM05
EG2x (EG25-G and EG21-G)
1.1. The Process of Sending MMS Messages
Step 1: Configure and activate a PDP context.
1) Configure <APN>, <username>, <password> and other parameters of a PDP context by
AT+QICSGP. For more details, please refer to
Quectel_LTE_Standard_TCP(IP)_Application_Note. If QoS settings need to be updated,
configure them by AT+CGQMIN, AT+CGEQMIN, AT+CGQREQ and AT+CGEQREQ commands.
For more details, please refer to Quectel_LTE_Standard_AT_Commands_Manual.
2) Activate the PDP context by AT+QIACT.
3) Configure the PDP context ID for MMS by AT+QMMSCFG="contextid",<contextID>.
Step 2: Configure URL and proxy of MMSC.
1) Configure the URL of MMSC by AT+QMMSCFG="mmsc",<URL>.
2) Configure the proxy of MMSC by AT+QMMSCFG="proxy",<gateway>,<port>.
3) Configure sending parameters by AT+QMMSCFG="sendparam",<valid>,<pri>,<sendrep>,
<visible>,<class>.
Step 3: Edit MMS messages.
1) Add recipients address by AT+QMMSEDIT=1,1,<optstring>.
2) Add CC recipients address by AT+QMMSEDIT=2,1,<optstring>.
3) Add BCC recipients address by AT+QMMSEDIT=3,1,<optstring>.
4) Edit the title by AT+QMMSEDIT=4,1,<optstring>. The character set should be specified as title
by AT+QMMSCFG="character",<charset> first.
5) Add attachments by AT+QMMSEDIT=5,1,<optstring>. The attachments can be RAM, UFS or
SD files.And the files can be uploaded to RAM, UFS or SD card by AT+QFUPL command. After

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sending MMS messages successfully, the file should be deleted by AT+QFDEL command. If the
attachment is a text file, the character set should be specified by
AT+QMMSCFG="character",<charset> first. For more details, please refer to
Quectel_LTE_Standard_FILE_AT_Commands_Manual.
Step 4: Send MMS messages by AT+QMMSEND=<timeout>. It may take some time to send MMS
messages successfully. MMS messages should be sent again before output of
"+QMMSEND:<err>,<httprsp>[,<mmsrsp>]" which indicates the ending of sending MMS
messages.
Step 5: Clear the content of an MMS message by AT+QMMSEDIT=0 and delete the files as
attachments by AT+QFDEL. For more details, please refer to Quectel_
LTE_Standard_FILE_AT_Commands_Manual.
Step 2 to Step 5 can be repeated, and Step 4 to Step 5 can be repeated too.
1.2. AT Command Syntax
Table 1: Types of AT Commands and Responses
1. <...>: Parameter name. Angle brackets < > are not included in the actual command line. The
parameter with an underscore "_" takes the default value.
2. [...]:Optional parameters. Square brackets [ ] are not included in the actual command line. The
default values will be used when optional parameters are omitted unless otherwise stated.
Test Command
AT+<x>=?
This command returns the list of parameters and value ranges
set by the corresponding Write Command or internal processes.
Read Command
AT+<x>?
This command returns the currently set value of the parameter
or parameters.
Write Command
AT+<x>=<…>
This command sets the user-definable parameter values.
Execution
Command
AT+<x>
This command reads non-variable parameters affected by
internal processes in the module.
NOTES

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2Description of MMS AT Commands
2.1. AT+QMMSCFG Configure Parameters of MMS
The command can be used to configure PDP context ID, MMSC, proxy, character type and other MMS
parameters. If the Write Command only executes one parameter, it will query the current settings.
AT+QMMSCFG Configure Parameters of MMS
Test Command
AT+QMMSCFG=?
Response
+QMMSCFG: "contextid",(range of supported
<contextID>s)
+QMMSCFG: "mmsc",<URL>
+QMMSCFG: "proxy",<gateway>,(range of supported
<port>s)
+QMMSCFG: "character",(list of supported <charset>s)
+QMMSCFG: "sendparam"[,(range of supported
<valid>s),(range of supported <pri>s),(list of supported
<sendrep>s),(list of supported <readrep>s),(range of
supported <visible>s),(range of supported <class>s)]
+QMMSCFG: "supportfield",(list of supported <mode>s)
+QMMSCFG: "connecttimeout",(list of supported
<connect_timeout>s)
OK
Read Command
AT+QMMSCFG?
Response
OK
Write Command
AT+QMMSCFG="contextid"[,<contextID
>]
Response
If <contextID> is omitted, query the current settings:
+QMMSCFG: "contextid",<contextID>
OK
If <contextID> is specified:
OK
Or
+CME ERROR: <err>

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Write Command
AT+QMMSCFG="mmsc"[,<URL>]
Response
If <URL> is omitted, query the current settings:
+QMMSCFG: "mmsc",<URL>
OK
If <URL> is specified, configure MMSC URL:
OK
Or
+CME ERROR: <err>
Write Command
AT+QMMSCFG="proxy"[,<gateway>,<po
rt>]
Response
If <gateway> and <port> are both omitted, query the
current settings:
+QMMSCFG: "proxy",<gateway>,<port>
OK
If <gateway> and <port> are specified, configure proxy
gateway and port:
OK
Or
+CME ERROR: <err>
Write Command
AT+QMMSCFG="character"[,<charset>]
Response
If <charset> is omitted, query the current settings:
+QMMSCFG: "character",<charset>
OK
If <charset> is specified, configure the character format:
OK
Or
+CME ERROR: <err>
Write Command
AT+QMMSCFG="sendparam"[,<valid>,<
pri>,<sendrep>,<readrep>,<visible>,<cla
ss>]
Response
If <valid>, <pri>, <sendrep>, <readrep>,<visible>,
<class> are all omitted, query the current settings:
+QMMSCFG: "sendparam",<valid>,<pri>,<sendrep>,<
readrep>,<visible>,<class>
OK
If <valid>, <pri>, <sendrep>, <readrep>, <visible>,
<class> are all specified:
OK
Or

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Parameter
+CME ERROR: <err>
Write Command
AT+QMMSCFG="supportfield"[,<mode>]
Response
If <mode> is omitted, query the current settings:
+QMMSCFG: "supportfield",<mode>
OK
If <mode> is specified:
OK
Or
+CME ERROR: <err>
Write Command
AT+QMMSCFG="connecttimeout"[,<con
nect_timeout>]
Response
If <connect_timeout> is omitted, query the current
settings:
+QMMSCFG:"connecttimeout",<connect_timeout>
OK
If <connect_timeout> is specified, configure the timeout
for MMS TCP handshake:
OK
Or
+CME ERROR: <err>
Characteristics
The command takes effect immediately.
The configurations will not be saved.
<contextID> Integer type. The PDP context ID. The range is 1-16, and the default value is 1.
<URL> String type. The address of MMSC. The maximum length of URL is 100 bytes.
<gateway> String type. The IP address of MMS proxy. The maximum length of gateway is 50
bytes.
<port> Integer type. The port of MMS proxy. The range is 1-65535, and the default value is
80.
<charset> String type. The type of character set.
"ASCII" US-ASCII character set
"UTF8" UTF8 character set
"UCS2" ISO-10646-UCS-2 character set, big-endian order needs to be specified
"GBK" GBK character set
<valid> Integer type. The validity period of the MMS message.
0 1 hour
1 12 hours
2 24 hours

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2.2. AT+QMMSEDIT Edit MMS Messages
The command can be used to add the recipient address, edit title and add attachments for MMS
messages. The character set of title or text file is set by AT+QMMSCFG="character",<charset>. For
example, if the content of a text file uses UTF8 character set, AT+QMMSCFG="character","UTF8" must
be executed first.
3 2 days
4 1 week
5 Maximum
6 Depend on network configuration
<pri> Integer type. The priority of the MMS message.
0 Low
1 Normal
2 High
3 Depend on network configuration
<sendrep> Integer type. Whether to deliver the report.
0 No
1 Yes
<readrep> Integer type. Whether to read report.
0 No
1 Yes
<visible> Integer type. Whether to hide address.
0 Hide any address
1 Show all addresses, including BCC address
2 Depend on network configuration
<class> Integer type. The class of the MMS message.
0 Personal
1 Advertisement
2 Informational
3 Automatical
4 Depend on network configuration
<mode> Integer type. The header option of MMS x-up-calling-id.
0 Not add the header option of MMS x-up-calling-id
1 Add the header option of MMS x-up-calling-id
<connect_timeout> Integer type. The timeout for MMS TCP handshake. The range is 1-125, and
the default value is 125. Unit: s.
<err> Integer type. The error code of the operation. Please refer to Chapter 5.
AT+QMMSEDIT Edit MMS Messages
Test Command
AT+QMMSEDIT=?
Response
+QMMSEDIT: (range of supported <function>s),(list of

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Parameter
supported <function_configure>s),<optstring>
OK
Read Command
AT+QMMSEDIT?
Response
OK
Write Command
AT+QMMSEDIT=<function>[,<function_con
figure>[,<optstring>]]
If <function_configure> and <optstring> are omitted:
When <function> is not 0, query the specified settings
of <function>:
List of [+QMMSEIDT: <function>,<optstring>]
OK
Or
+CME ERROR: <err>
When <function>=0, delete all content about the MMS
message:
OK
Or
+CME ERROR: <err>
If <function_configure> is specified:
When <function_configure>=0, <optstring> needs to
be omitted, which means deleting the specified settings
of <function>:
OK
Or
+CME ERROR: <err>
When <function_configure>=1, <optstring> is
specified, which means setting the specified settings of
<function>:
OK
Or
+CME ERROR: <err>
Characteristics
The command takes effect immediately.
The configurations will not be saved.
<function> Integer type. Function operation.
0 Delete all
1Operate "TO address"
2Operate "CC address"
3Operate "BCC address"

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2.3. AT+QMMSEND Send MMS Messages
This command is used to send MMS messages. Customers should not re-execute AT+QMMSEND until
+QMMSEND: <err>,<httprsp>,<mmsrsp> is returned. When the <timeout> is reached, if the process of
sending MMS messages has not finished yet, MMS sending will be interrupted.
4Operate MMS message title
5Operate file as attachment
<function_configure> Integer type. Enable/disable <function>.
0 Delete the specified settings of <function>.
1 Set the specified settings of <function>.
<optstring> String type.
If <function>=1, 2 or 3, it is the recipient address. The maximum number of recipients
is 6. The maximum length of address is 50 bytes.
If <function>=4, it is the MMS message title. The maximum length of title is 200
bytes.
If <function>=5, it is the file name of attachment. If the file name is started with
"RAM", "UFS" or "SD" it indicates the file is from RAM, UFS or SD card respectively. It
is strongly recommended to use files from RAM as attachments. The max length of file
name is 80 bytes, the maximum number of attachments is 12, and the maximum size
of attachments is restricted by the operator.
<err> Integer type. The error code of the operation. Please refer to Chapter 5.
AT+QMMSEND Send MMS Messages
Test Command
AT+QMMSEND=?
Response
+QMMSEND: (range of supported <timeout>s)
OK
Read Command
AT+QMMSEND?
Response
OK
Write Command
AT+QMMSEND=<timeout>
Response
OK
+QMMSEND: <err>,<httprsp>[,<mmsrsp>]
Or
+CME ERROR: <err>
Characteristics
The command takes effect immediately.
The configurations will not be saved.

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Parameter
<timeout> Integer type. The maximum time to send MMS messages. The range is 1-65535. Unit:
second.
<httprsp> Integer type. The response code of HTTP(S), for reference only. For example, 200
indicates HTTP(S) posts data successfully. Please refer to Chapter 6.
<mmsrsp> String type. The response string from MMSC when MMS messages are failed to be
sent, and is for reference only.
<err> If MMS messages are sent successfully, <err> is 0. Otherwise, <err> indicates the
error code of the operation. Please refer to Chapter 5.

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3Examples
3.1. Add Recipients
//Add phone number or email address as a recipient. The maximum number of recipients is 6.
AT+QMMSEDIT=1,1,"13856122546" //Add a phone number as a recipient.
OK
AT+QMMSEDIT=1,1,"recipient [e-mail]" //Add an email address as a recipient.
OK
AT+QMMSEDIT=1 //Query the recipients address.
+QMMSEDIT: 1,"13856122546"
+QMMSEDIT: 1,"recipient.t[email protected]"
OK
//Delete the recipients by executing AT+QMMSEDIT=1,0.
AT+QMMSEDIT=1,0 //Delete a recipient.
OK
AT+QMMSEDIT=1 //Query the recipients’ address.
OK
3.2. Add CC Recipients or BCC Recipients
//The operation of adding CC recipients differs from adding BCC recipients only in <function> value. For
CC recipients, the <function> value is 2. For BCC recipients, it is 3.
AT+QMMSEDIT=2,1,"13856122546" //Add a phone number as a CC recipient.
OK
AT+QMMSEDIT=2 //Query the CC recipient address.
+QMMSEDIT: 2,"13856122546"
OK
//Delete the CC recipient by executing AT+QMMSEDIT=2,0.
AT+QMMSEDIT=2,0 //Delete the CC recipient.
OK
AT+QMMSEDIT=2 //Query the CC recipient address.

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OK
3.3. Edit the Title of MMS Messages
//The character set of title is set by AT+QMMSCFG="character",<charset>. If the <charset> is "ASCII",
add the title as follows:
AT+QMMSCFG="character","ASCII" //Set the charset as "ASCII".
OK
AT+QMMSEDIT=4,1,"test EM05 mms" //Edit the title of the MMS message.
OK
AT+QMMSEDIT=4 //Query the title of the MMS message.
+QMMSEDIT: 4,"ASCII","test EM05 mms"
OK
//If the <charset> is not ASCII, the <optstring> should be the hex string of the inputted data.
AT+QMMSCFG="character", "UTF8" //Set the charset as "UTF8".
OK
AT+QMMSEDIT=4,1,"7465737420454D3035206D6D73" //Edit the title of MMS message.
"7465737420454D3035206D6D73" is
the hex string of "test EM05 MMS" in
UTF8.
OK
AT+QMMSEDIT=4 //Query the title of the MMS message.
+QMMSEDIT: 4,"UTF8","7465737420454D3035206D6D73"
OK
//Delete the title by executing AT+QMMSEDIT=4,0.
AT+QMMSEDIT=4,0 //Delete the title of the MMS message.
OK
AT+QMMSEDIT=4 //Query the title of the MMS message.
OK
3.4. Add Attachments
//Customers can add attachments for an MMS message. The attachments can be RAM, UFS and SD files,
but it is strongly recommended to use RAM files. The maximum number of attachments is 12, and the
maximum length of file name is 80 bytes. The total size of attachments may be restricted by the operator.
In the following example, the attachment is an RAM text file:
AT+QFUPL="RAM:test_mms.txt",100,200,1 //Upload a file to RAM. The file will be saved as
test_mms.txt and the maximum size of file is 100

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bytes. 200 indicates timeout value, and 1 indicates
ACK mode. For more details, please refer to
Quectel_LTE_Standard_FILE_Application_Note.
CONNECT
<Input 100 bytes data>
+QFUPL: 100,0
OK
AT+QFLST="RAM:*" //Query the file list of RAM.
+QFLST: "RAM:test_mms.txt",100
OK
AT+QMMSCFG="character","ASCII" //Set the charset as "ASCII" for RAM:test_mms.txt.
OK
AT+QMMSEDIT=5,1,"RAM:test_mms.txt" //Add attachments for the MMS message.
OK
AT+QMMSEDIT=5 //Query the attachments.
+QMMSEDIT: 5,"RAM:test_mms.txt"
OK
//In the following example, the attachment is an RAM JPG file:
AT+QFUPL="RAM:test_pic.jpg",200,300,1 //Upload a file to RAM. The file will be saved as
test_pic.jpg and the maximum size of file is 200 bytes.
300 indicates timeout value, and 1 indicates ACK mode.
For more details, please refer to
Quectel_LTE_Standard_FILE_Application_Note.
CONNECT
<Input 200 bytes data>
+QFUPL: 200,0
OK
AT+QFLST="RAM:*" //Query the file list of RAM.
+QFLST: "RAM:test_mms.txt",100
+QFLST: "RAM:test_pic.jpg",200
OK
AT+QMMSEDIT=5,1,"RAM:test_pic.jpg" //RAM:test_pic.jpg is not a text file. There is no need to
specify the character set.
OK
AT+QMMSEDIT=5 //Query the attachments.
+QMMSEDIT: 5,"RAM:test_mms.txt"
+QMMSEDIT: 5,"RAM:test_pic.jpg"
OK

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//Delete the attachments by executing AT+QMMSEDIT=5,0.
AT+QMMSEDIT=5,0 //Delete attachments for the MMS message. All
attachments will be deleted.
OK
AT+QMMSEDIT=5 //Query the attachments.
OK
//After the MMS message is sent successfully, RAM files should be deleted by AT+QFDEL.
AT+QFDEL="RAM:test_mms.txt" //Delete the RAM file.
OK
AT+QFDEL="RAM:test_pic.jpg" //Delete the RAM file.
OK
AT+QFLST="RAM:*" //Query the file list of RAM.
OK
3.5. Clear all Contents of MMS Messages
//Delete the content, recipients, CC recipients, BCC recipients, title and attachments of an MMS message
by AT+QMMSEDIT=0.
AT+QMMSEDIT=0 //Clear all contents of the MMS message.
OK
AT+QMMSEDIT=1 //Query recipients.
OK
AT+QMMSEDIT=2 //Query CC recipients.
OK
AT+QMMSEDIT=3 //Query BCC recipients.
OK
AT+QMMSEDIT=4 //Query title of the MMS message.
OK
AT+QMMSEDIT=5 //Query attachments.
OK
3.6. Send MMS Messages
//Step 1: Configure and activate a PDP context.
AT+QICSGP=1,1,"UNIWAP","" ,"",1 //Configure PDP context 1.APN is "UNIWAP" for
China Unicom.
OK
AT+QIACT=1 //Activate PDP context 1.
OK //Activated successfully.

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AT+QIACT? //Query the state of PDP context.
+QIACT: 1,1,1,"10.7.157.1"
OK
AT+QMMSCFG="contextid",1 //Set the PDP context ID as 1. The PDP context ID
must be activated first.
OK
AT+QMMSCFG="contextid" //Query the PDP context ID.
+QMMSCFG: "contextid",1
OK
//Step 2: Configure the URL and proxy of MMSC.
AT+QMMSCFG="mmsc","mmsc.myuni.com" //Configure the URL of MMSC. "mmsc.myuni.com"
is for China Unicom.
OK
AT+QMMSCFG="mmsc" //Query the URL of MMSC.
+QMMSCFG: "mmsc","mmsc.myuni.com"
OK
AT+QMMSCFG="proxy","10.0.0.172",80 //Configure the proxy address and port of MMSC.
"10.0.0.172:80" is for China Unicom.
OK
AT+QMMSCFG="proxy" //Query the proxy address and port of MMSC.
+QMMSCFG: "proxy","10.0.0.172",80
OK
//Step 3: Configure sending parameters.
AT+QMMSCFG="sendparam",6,2,0,0,2,4 //Configure the sending parameters.
OK
AT+QMMSCFG="sendparam" //Query the sending parameters.
+QMMSCFG: "sendparam",6,2,0,0,2,4
OK
//Step 4: Edit the MMS message.
AT+QMMSEDIT=1,1,"13856122546" //Add a phone number as a recipient.
OK
AT+QMMSEDIT=2,1,"copy[email protected]" //Add an email address as a CC recipient.
OK
AT+QMMSEDIT=3,1,"[e-mail]" //Add an email address as a BCC recipient.
OK
AT+QMMSEDIT=1 //Query the recipient address.
+QMMSEDIT: 1,"13856122546"
OK
AT+QMMSEDIT=2 //Query the CC recipient address.

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+QMMSEDIT: 2,"[e-mail]"
OK
AT+QMMSEDIT=3 //Query the BCC recipient address.
+QMMSEDIT: 3,"[e-mail]"
OK
AT+QMMSCFG="character","ASCII" //Configure the character type asASCII for title.
OK
AT+QMMSEDIT=4,1,"test EM05 mms" //Edit the title of the MMS message.
OK
AT+QMMSEDIT=4 //Query the title of the MMS message.
+QMMSEDIT: 4,"ASCII","test EM05 mms"
OK
//Add attachments.
AT+QFUPL="RAM:test_ram.txt",100,300,1 //Upload a file to RAM. The file will be saved as
test_ram.txt and the maximum size of file is 100
bytes. 300 indicates timeout value, and 1
indicates ACK mode. For more details, please
refer to
Quectel_LTE_Standard_FILE_Application_Note.
CONNECT
<Input 100 bytes data>
+QFUPL: 100,0
OK
AT+QFLST="RAM:* " //Query the file list of RAM.
+QFLST: "RAM:test_ram.txt",100
OK
AT+QMMSCFG="character","ASCII" //Configure the character type as ASCII for
RAM:test_ram.txt.
OK
AT+QMMSEDIT=5,1,"RAM:test_ram.txt" //Add attachments for the MMS message.
test_ram.txt is an RAM file.
OK
AT+QMMSEDIT=5 //Query the attachments.
+QMMSEDIT: 5,"RAM:test_ram.txt"
OK
AT+QFUPL="RAM:test_pic.jpg",200,300,1 //Upload a file to RAM. The file will be saved as
test_pic.jpg and the maximum size of file is 200
bytes. 300 indicates timeout value, and 1