Hi Tanmay,
My name is Jon McCain and I work in our Speech Enablement group whose job is to do just what you need. Our team creates Speech Enabled IVR's utilizing industry standard Voice User Interface best practices and technologies.
Regarding your statement of, '... someone is building the grammars for us and I need to know how to use those in Interaction Attendant'. Unfortunately, Interaction Attendant doesn't allow the specification or passing in of Custom Grammars. The only way to do this is to do so via the Register Grammar Handler toolstep or using VoiceXML to design your application. The latter is what our team does as that is the industry standard for VUI Design and implementation for Speech Applications.
Please email
SpeechPreSales@inin.com to discuss how our team can help you create a world class speech application for your company.
Sincerely,
Jon