DID Callback

Main features:
- integrated Interactive Voice Response System (IVR) - voice messages.
- multilingual service. Several languages are supported by the system, including English, Spanish, French, Vietnamese.
- possibility of assigning a particular language to the access number of a particular service.
- Possibility of assigning a particular language to the given user.
- Possibility of choosing the language by the user.
- Voice information on the current account status (dependant on the settings, this information can be provided during each connection with the system or by reaching previously defined number e.g. 111)
- Voice information on the maximum, possible call duration for the particular number.
- Possibility of initiating a call with the other number without the necessity of launching callback for the second time (the connection with the user remains active)
- Possibility of terminating the connection, by entering previously set combination from the keypad (e.g.. ##), and choosing other number.
- Possibility of adding funds to the account by entering the PIN on the web site or sending it by SMS 
- Possibility of setting up a new account or adding funds to already existing account by using a credit card. (utilizing the online shop module)
- Fast access to the particular number by using a directory , previously defined by the user (directory can be managed through the web site).
DID callback service operates on the similar principle to ANI callback service. The only difference that distinguishes these services is the authorization process. In the case of ANI callback service it is based on the defined number which has to be called in order to initiate the callback. Thus, it is required that each user had an unique access number (DID). This service is mostly designed for the users who reach the access number from the phones not transmit the Caller ID.