SMS Autoreply from Database
This guide gives you information on how to create an autoresponding
application that uses information stored in your database. The solution
presented on this webpage can be used with any database server
(Microsoft SQL, Oracle, MySQL, Sybase, etc...).
This solution is ideal to create the following service (Figure 1):
1.) A mobile user sends in a keyword in an SMS message to the system.
2.) The system looks up the response SMS message from the database based on
3.) The system sends the response SMS message back to the mobile user.
I assume you already have a working
service provider connection configured, that is capable of sending and
receiving messages (e.g. you have a GSM modem attached to your
server computer and your GSM modem is configured in Ozeki NG).
Figure 1 - System architecture
Step 1 - Setup the Autoreply Database User
In order to create the explained service first you need to install an Autoreply
Database User (Figure 2). Detailed information about how this user can be
installed is available in the "Autoreply
Database User installation guide".
Figure 2 - Install the Autoreply Database User for SMS information queries
Step 2 - Create the database layout
The next step is to create your database table, that stores the response SMS
messages (Figure 3). In our example we use Microsoft SQL Express as the
database server. The following guide gives you information on how you
can create a database layout using SQL Express:
Create database layout for SMS
autoresponses. In our example we use the following table. (Of course
you can change the table layout according to your needs and you can use
multiple database tables.)
> select * from autoreplymessage;
id keyword msg
---------- ------------------------------ -------------------------------------
1 default There is no data for this keyword.
2 red Red is a good color.
3 blue Blue is not the best option.
(3 rows affected)
Figure 3 - Database table layout for SMS information query
Step 3 - Configure the Autoreply Database User to use your database
When your database is ready, you need to enter the database connection
information (connection type and connection string) into the database
settings configuration form of the Autoreply Database user. This configuration
form can be opened by clicking on the "Database setup" menu item (Figure 4).
Figure 4 - Database settings for SMS information query
On this form you can select the database connection type and you can
enter the connection string. In our example (for SQL Express) the connection
information that should be used is:
Database=ozeki;Persist Security Info=True
For other database servers, such as Oracle, MySQL, etc..., you can find
information about how to format the connection string in the
Database Connection Strings guide.
Step 4 - Write the autoresponding command script
The final step to make SMS information query possible is to write the script
file. The script
file is a plain text file that controls which SQL command should be
executed when an incoming SMS arrives. You can edit the scriptfile with notepad
or any other text editor. In our example the location of the script file is:
C:\Program Files\Ozeki\OzekiNG - SMS Gateway\config\TestApp\sqlscript.txt
The contents of the script file in our example has three sections (Figure 5).
The first two sections are triggered for a response SMS if the keyword "RED"
or "BLUE" is received in an SMS message.
The final section creates the default response message if something else was
|C:\Program Files\Ozeki\OzekiNG - SMS Gateway\config\TestApp\sqlscript.txt|
SELECT '$sender',msg from autoreplymessage where keyword='red'
SELECT '$sender',msg from autoreplymessage where keyword='blue'
SELECT '$sender',msg from autoreplymessage where keyword='default'
Figure 5 - example script file
Autoreply Database user can recognize the following keywords:
|Keyword||Value||$originator||It is replaced to the sender telephone number of the messages
|$sender|| It is replaced to the sender telephone number of the messages (an alias for originator)|
|$recipient||It is replaced to the telephone number that received the message|
|$receiver||It is replaced to the telephone number that received the messages (an alias for recipient)|
|$messagedata||It is replaced to the message text|
|$keyword||It is replaced to the keyword in the message|
|$after||It is replaced to the message the message text after the keyword in the message|
|$senttime||It is replaced to the timestamp, that represents when the message was sent|
|$receivedtime||It is replaced to the timestamp, that represents when the message was received|
|$messagetype||It is replaced to the message type (in most cases this will be SMS:TEXT)|
|$id||It is replaced to the unique string identifier of the message|
|$operator||It is replaced to the name of the service provider connection that received the message|
|$1||The first word in the message. You can use $2 to refer to the second word, $3 to refer to the third word, etc...|
The structure of the autoreply script is explained in the following documents:
Script file structure for SMS
information query from database
Sample script file for SMS information
query from database.
Step 5 - Testing the solution
After this is done, you can test the solution by sending an SMS message to
your SMS gateway. The SMS gateway will forward the message to the Autoreply
Database User, where the command script will be executed for the response.
The response will be returned by an SQL SELECT query defined
in the script file. After the appropriate SQL SELECT is executed the response
messages will be sent back to you in SMS. To track what is going on, read
the logs in the following directory:
C:\Program Files\Ozeki\OzekiNG - SMS Gateway\Logs
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