These pages provide information on how to implement the C#
open source VoIP softphone implementation of Ozeki SIP SDK for speech to text based call recording.
Please check the utilization, configuration and source code pages to get an overall view.
In the follows the possibilities of voice recognition will be
demonstrated by a softphone with using the Voice Analyzer of .Net Framework. The
Ozeki Speech to text sample program has been developed to demonstrate the essential
and easy-to-use services of Ozeki VoIP SIP SDK;
and to present the possibilities of keyword recognition of .Net Framework.
making it simple and demonstrative, the sample program represents a single line softphone.
This softphone can be established, receive phone calls and it can send and receive
DTMF signals that are needed to navigate in IVR systems. When the call is hung up
a list is created that includes the mentioned keywords.
How to build your own speech to text based call recording system?
Before you start please check if your PC meet the following
Time needed to introduce Ozeki VoIP SIP SDK:
It requires a really short time to introduce this SDK. Just download Ozeki VoIP SIP SDK and
then the Speech_to_text.zip to get started.
Microsoft Windows XP
Microsoft Windows Server 2003
Microsoft Windows Server 2008
Microsoft Windows Vista
Microsoft Windows 7
Microsoft Visual Studio 2010
Microsoft .Net Framework 3.5 or 4.0
SIP account (or a SIP PBX)
1 GHz or faster processor
1GB RAM (32-bit) || 2GB RAM (64-bit)
Ready to start?
After Ozeki VoIP SIP SDK and
Speech_to_text.zip you are
ready to start building your own speech to text based call recording system. Follow
these useful links to get an overall view and detailed instructions:
When you decide to purchase Ozeki VoIP SIP SDK license you may be interested in licensing policy.
A purchased Ozeki VoIP SIP SDK "license" can be used to build a "single product". This
"single product" (along with it's subsequent versions) can be freely distributed in
as many copies as you wish without paying any royalties or license fees to Ozeki.