A user is provided with access to a systems interface to back-end legacy systems using voice inputs. The user dials-in to the voice server using an access device. A voice recognition server performs voice authentication, speech recognition, and speech synthesis. The voice server authenticates the user based on a voice exemplar provided by the user. Using speech synthesis, the voice server provides a menu of operations from which the user can select. By speaking into the access device, the user selects an operation and provides any additional data needed for the operation. Using speech recognition, the voice server prepares a user request based on the spoken user input. The user request is forwarded to the systems interface to the legacy systems. The systems interface includes a protocol server for providing a protocol interface and a transaction server for receiving user requests and generating legacy transactions. The systems interface retrieves information from the legacy systems based on the user request and forwards this information to the voice server. The voice server formats the information and outputs the information to the access device as speech and/or text.