Brandon Tyler, Speech developer here to serve you.
To start developing on Speech Server (2007), use the Speech Server (2007) Developer Edition – the free, yet still fully functional version (in the good MS tradition) – it are literally the same bits that the official product has: http://www.microsoft.com/downloads/details.aspx?FamilyId=BB183640-4B8F-4828-80C9-E83C3B2E7A2C&displaylang=en
Yet of course licensed only to develop, and you will need to buy/report the licenses once you deploy.
Please make sure to follow the steps in the Installation Notes scrupulously. Else the installation will typically fail.
Works only with Visual Studio 2005 not Visual Studio 2008.
If you installed installed .NET 3.0 SP1 or Vista SP1, make sure to install the following patch to avoid getting the ‘red crosses bug’:
http://www.microsoft.com/downloads/details.aspx?FamilyId=4D8B068B-3C45-4EEA-BBC8-C4A4C4201F60&displaylang=en.
Community Support is given here: http://forums.microsoft.com/unifiedcommunications/default.aspx?siteid=57
Microsoft Support gives Speech Server (2007) support if you file the bug in the DSC Media queue, or under OCS 2007.
Documentation is found here: http://go.microsoft.com/fwlink/?LinkId=103827
Whitepapers can be found on the Office Communications Developer Portal: http://msdn.microsoft.com/ocdev under the ‘technical articles’ section.
The Speech Server (2007) MOM pack can be found here: http://www.microsoft.com/downloads/details.aspx?FamilyID=55d30337-8e50-4d63-9410-870be4839183&DisplayLang=en
The server is licensed as Office Communications Server 2007.
To understand the pricing best go here: http://gotspeech.net/blogs/michaeldunn/archive/2007/08/20/speech-server-2007-pricing-revealed.aspx
That whole website is useful.
The official training can be found there as well: http://gotspeech.net/elearning.
If you develop your 2007 application: I strongly recommend to develop in managed code and the Windows Workflow Foundation.
SALT and VoiceXML will work, but .NET is the path we are innovating on.
You can embed your existing SALT application inside Windows Workflow, and replace the pieces little by little if need be.
Microsoft Consulting Services has several Speech Server consultants.
PingBack from http://www.windows-vista.luiscorreia.com/speech-server-2007-resources-overview/