The key feature is interactive text messaging. This capability, along with the message customization feature, allows the software to process text responses automatically. In addition, by using Voicent IVR Studio, you can set up inbound text message applications. For example, you can setup the system to send text information about product A when receiving incoming text '123' and send text information about product B for incoming text '345'. The second special feature is that Voicent text software does not require you to sign up with a SMS center. The software uses your own text plan from a cell phone company. It is the same as you sending out text messages from your cell phone.