C# VOIP AUTODIALER EXAMPLE 9.2.0
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ABOUT C# VOIP AUTODIALER EXAMPLE
Ozeki SIP .Net SDK to develop a VoIP autodialer in C# to play automated voice messages. The sample program allows to create complex call campaigns. It dials phone numbers and plays voice messages to the called party automatically then ends the call. It displays details about the call such as phone number, progress of the call, call status and answer (you can check the DTMF signals if the called party press a key to answer). The autodialer plays a prerecorded audio message to the called party. You can enter several phone numbers to be called and the program will dial these numbers one-by-one and play the message. Since the autodialer can handle DTMF signals, the called party can react to the message by pressing a key. By using a VoIP autodialer messages will surely reach the target and immediate feedback is also ensured. The sample program can also be equipped with further functions with Ozeki VoIP SIP SDK: handling of multiple calls, playing various audio messages, Voice Activity Detection support, set of exact call time, run from Autodialer service (therefore calls will not be interrupted by e.g. the screensaver). The sample program can be divided into four main parts: MainForm.cs (it displays the user interface for the application), Autodialer.cs (it sets up calls and plays the audio files), CallItem (it presents call information, it is displayed on the GUI by data binding. It allows to display even complex data with minimal coding), Datagrid (data binding for it is run in MainForm_Load). In order to improve voice quality various codecs are supported: G.711 aLaw/uLaw, G.729, iLBC, GSM, G.722, SPEEX, SPEEX-WB. Moreover outstanding PBX systems compatibility is guaranteed: Cisco Unified CM, Asterisk PBX, 3CX Phone System, etc. After an Ozeki SIP SDK .Net license has been purchased you can feely use the license with your product and may freely distribute your product in as many copies as you want and no royalties or license fees are needed to be paid for Ozeki