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
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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