Quintum Technologies Tenor DX - Manual (Page 97)

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Chapter 10: Using IVR
What is IVR?
Interactive Voice Response (IVR) is a feature of the Tenor DX that enables you to offer services, such as Pre-
paid calling cards and Post-paid accounts to your customers. The Tenor DX uses the RADIUS (Remote
Authentication Dial-In User Service), for authenticating and authorizing user access to the VoIP network. The
RADIUS is a standard protocol which provides a series of standardized messages formats for transmitting and
receiving dialed information, account data and authorization codes between the network access gateway and
the billing server. As a result, the RADIUS enables the Tenor DX to interoperate directly with billing server
application software from a wide range of vendors. To provide redundancy, the Tenor DX supports two
RADIUS servers: Primary and Secondary.
The IVR interface enables the Tenor DX 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 num-
ber, PIN number, and calling number. The caller is prompted for each piece of information and the digits are
captured by the Tenor DX and converted into RADIUS format. The RADIUS will use 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 DX to proceed with the call. The call will then be routed over the VoIP
network to the appropriate remote Tenor DX.
You are able to pre-record and customize voice prompt files which lead the customer through the calling card
procedure. You can pre-record messages to meet your network and customer needs. Six languages are sup-
ported for voice prompts: Persian, English, French, Mandarin, Spanish, German, and Arabic. 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 following message will ask the user if they would like to
hear the rest of the messages in English, French, Mandarin, Spanish, German, or Arabic.
Through the Command Line Interface (CLI), you can configure all functions within the Tenor DX that will be
used for pre-paid/post-paid call services, including IVR and RADIUS data.
IVR Call Types
There are two call services Tenor DX supports through IVR: Pre-paid Calling Card and Post-paid Account.
• Pre-paid Calling Card. A card with a set dollar amount to be used for placing voice calls. The normal
call flow for a pre-paid service starts with the caller dialing the pre-paid access number from a regular
phone. The Tenor DX prompts the caller for a card number and destination number which are sent to the
RADIUS server (third party software) for verification.
• Post-paid Account. An account used for placing voice calls where the account number and PIN (per-
sonal identification number) are used for security. The Tenor DX prompts the caller to enter an account
number and a PIN (personal identification number), which are sent to the RADIUS server for verifica-
tion. Normally, there is no limit on the amount or duration the caller is authorized to talk.