Interactive Voice Response (IVR) is a feature of the Tenor that enables you to offer services to your customers, such as Pre-paid calling cards and Post-paid accounts. The Tenor uses RADIUS (Remote Authentication Dial-In User Service) to authenticate and authorize user access to the VoIP network. RADIUS is a standard protocol that provides a series of message formats for transmitting and receiving dialed information, account data, and authorization codes between the network access gateway and the billing server. RADIUS enables the Tenor to interoperate directly with billing server application software from a wide range of vendors. To provide redundancy, the Tenor supports two RADIUS servers: Primary and Secondary.
The IVR interface enables the Tenor to play back interactive pre-recorded voice messages to a customer calling in from the Public Switched Telephone Network (PSTN), requesting information such as account number, PIN number, and calling number. The caller is prompted for each piece of information and the digits are captured by the Tenor and converted into RADIUS format. The RADIUS server uses the input data to identify the customer, verify the identity using the PIN code, check the account status, and then send back messages in RADIUS format to authorize the Tenor to proceed with the call. The call will then be routed over the VoIP network to the appropriate remote Tenor.
Through an interactive IVR Prompt Server, you can pre-record and customize voice prompt files that lead the customer through the calling card procedure. You can pre-record messages to meet your network and customer needs. The IVR Prompt Server communicates with a Tenor via an IP link using TFTP protocol. An IVR Tenor supports two IVR Prompt Servers: Primary and Secondary. The IVR Prompt server is on the same IP network as either the Tenor or the RADIUS server.
Multiple languages are supported for voice prompts. The multiple language feature enables you to select multiple languages in which to play voice recordings. For example, the welcome message will be played in Persian, and the subsequent message will ask the user if they would like to hear the rest of the messages in English, French, Mandarin, Persian, Spanish, German, or Arabic.
Through the Command Line Interface (CLI), you can configure all functions within the Tenor that will be used for pre-paid /post-paid call services, including IVR and RADIUS data.