If you are working on telephone solutions, please check
out the Ozeki VoIP SIP SDK.
It can be used to create:
- Adobe Flash video phone
- Silverlight video phone
- Web to web calls
- Web to VoIP calls
Custom SIP clients:
- Silverlight SIP VoIP client
- Flash SIP VoIP client
- C# .net SIP VoIP client
- ASP .net SIP VoIP client
- Web based SIP VoIP client
Custom VoIP solutions:
- VoIP SIP softphones
- VoIP call center clients
- VoIP IVR systems
- VoIP predictive dialer systems
- VoIP auto dialer systems
- VoIP call assistant
- VoIP call recording systems
- VoIP intercom solutions
C++ SMS SDK for Visual Studio
This example application was written in C++ using Visual Studio 2008 for
to illustrate how you can send and receive SMS messages. The example uses the
ozApi.dll file, that allows you to connect to Ozeki NG SMS Gateway over the
network. The source code of the ozApi.dll is also included.
The C++ SMS SDK included in the downloadable example, opens a TCP/IP socket
over the network to the SMSC and uses this socket to send and receive messages
(Figure 1). It sends the SMS message after logging
into the SMSC using a username and password. To use this example, you
should setup an Ozeki NG SMS gateway instance
on one of your servers in
the network. The SMS gateway can operate a GSM modem or GSM phone attached
to it with a data cable or it can connect to SMS service providers over the
Internet. In the SMS gateway, you should
create a standard user account and use that
user account in this SMS C++ example.
This architecture can be used to access SMPP SMSC using C++. Of course not
only C++ SMPP SMS connection is possible. You can setup C++ UCP SMS, C++
CIMD2 SMS and C++ modem AT command SMS
solution with it.
Figure 1 - C++ SMS API to connect to SMSC
C++ example code
The following example gives you a quick insight on how to use this C++ SMS API.
using namespace std;
// dll description
HINSTANCE hDLL = NULL;
// This function unload ozApi.dll
// This function load ozApi.dll
HINSTANCE hDLL = NULL;
// Load ozApi.dll
hDLL = LoadLibrary("ozApi.dll");
if (hDLL != NULL)
conn = (SmsConnection)GetProcAddress((HMODULE)hDLL, "CreateSmsConnection");
if (conn != NULL) return conn();
int main(int argc, char** argv)
// Load ozApi dll and connect to it.
ozApi* myConn = LoadOzekiApi();
if (myConn == NULL)
// Error while connect to dll.
cout << "Unable to load ozApi.dll" << endl;
// Dll is loaded.
cout << "Loaded" << endl;
// Connect to Ozeki NG SMS Gateway
// on localhost (127.0.0.1) at port 9500.
// Login with default username and password
// (admin / abc123)
// Send a test message to 0011111
myConn->sendMessage("0011111", "Test Message.");
// If username/password is bad
cout << "Bad usename or password" << endl;
// Closing connection.
cout << "Closing connection..." << endl;
// Unload ozApi.dll
cout << "Done" << endl;
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