Interactive Voice Response (IP IVR)
The IP IVR module extends VoipSwitch of the whole set of services that utilizes voice interaction with users. To the main scenarios in which IP IVR plays main role belong:
Two stage dialing ? calling cards (PIN or Caller ID/ANI authorization)
One stage dialing with IVR (PIN or Caller ID/ANI authorization)
The IVR is very often utilized also in services like broadband phone calling offering following functionality:
Max call duration announcement
Actual balance information
Last minute (or any other defined period) before the call end warning
Recharge by PIN
Support number and others.
The IP IVR can be used with any VoIP equipment that is compatible with SIP or H323 protocol. Also it supports DIDs (SIP or H323 trunks). Thus, the access number for example for calling cards can be implemented by using DIDs rented from a provider (instead of owning a PSTN gateway). In this scenario DID or DIDs are delivered over Internet directly from DID provider to VoipSwitch.
The IP IVR supports following codecs: g723.1, g729, g711, GSM (soon iLBC). The voice prompts are stored in already compressed format what makes the system robust as it does not have to convert the prompts while realizing the IVR procedures.
The IVR scenarios as well as voice prompts are customizable. It comes with predefined scenarios that can be found useful in different applications. The system is multilingual ? by default there are several languages uploaded, for example english, french, spanish, arabic, hebrew and many others.