7. A system in which a user is able to engage in multiple modes of communication with a speech-enabled application, comprising: a first device configured to execute the speech-enabled application so as to engage in a communication session with a user; a voice interface operable by the user during the communication session; and a text interface operable by the user during the communication session; wherein the system is configured such that the first device is able to receive, at a first time during the communication session, a first signal from a voice server via a communication channel, the first signal corresponding to speech recognition results generated by the voice server of a voice input originating from the voice interface, and to process the first signal with the speech-enabled application during the communication session with the user to generate a first responsive output; and wherein the system is further configured such that the first device is able to receive, at a second time during the communication session with the user, a second signal from the voice server via the communication channel, the second signal corresponding to a text input originating from the text interface operated by the user during the communication session, to process the second signal with the speech-enabled application during the communication session with the user to generate a second responsive output, and to communicate a third signal corresponding to the second responsive output to the text interface via a communication path exclusive of the voice server; and wherein the system is further configured such that the voice server is able to receive the text input via a communications network.
7. A system in which a user is able to engage in multiple modes of communication with a speech-enabled application, comprising: a first device configured to execute the speech-enabled application so as to engage in a communication session with a user; a voice interface operable by the user during the communication session; and a text interface operable by the user during the communication session; wherein the system is configured such that the first device is able to receive, at a first time during the communication session, a first signal from a voice server via a communication channel, the first signal corresponding to speech recognition results generated by the voice server of a voice input originating from the voice interface, and to process the first signal with the speech-enabled application during the communication session with the user to generate a first responsive output; and wherein the system is further configured such that the first device is able to receive, at a second time during the communication session with the user, a second signal from the voice server via the communication channel, the second signal corresponding to a text input originating from the text interface operated by the user during the communication session, to process the second signal with the speech-enabled application during the communication session with the user to generate a second responsive output, and to communicate a third signal corresponding to the second responsive output to the text interface via a communication path exclusive of the voice server; and wherein the system is further configured such that the voice server is able to receive the text input via a communications network. 9. The system of claim 7 , wherein the first device comprises an automated response system.