TECHNICAL BACKGROUND 
     Interactive Voice Response systems (IVR) help computers recognize touch tone (DTMF) and voice responses. This ability to recognize these audio responses allow a computer to present pre-recorded or dynamically generated audio menus to a caller. For example, an audio menu may speak: “Please choose or say one to speak to Mr. Smith. Please choose or say two to speak to Mr. Jones.” The caller then chooses from the options given by these audio menus. The caller may choose options using the pushbuttons of the calling communication device, or by speaking. These audio menu IVR systems are in wide use for applications such as telephone banking, televoting, and credit card transactions. 
     OVERVIEW 
     A method for switching interactive modes in a menu system is disclosed. An audio interactive voice response session is established to provide audio menus to a communication device. A data session with said communication device is also established. The data session is used to instruct the communication device to display indicia that a second mode may be activated. The indicia may be an icon indicative of the second mode. A user selection of the indicia on the communication device sends a message to the IVR system indicating that the second mode is to be activated. The second mode may be a text mode wherein text menus are presented to the user instead of audio menus. The second mode may be a suspend mode whereby the IVR session is halted at its present menu choices and saved for later reactivation. 
     A communication system that switches interactive modes in a menu system is disclosed. The communication system includes an audio interface adapted to establish an audio IVR session with an IVR system. The IVR system provides audio menus to said communication system. The communication system also includes a data interface adapted to establish a data session with the IVR system. The communication system displays indicia that a second mode may be activated. Responsive to a user selection of the indicia, the communication system sends a message to the IVR system. The IVR system responds with at least a message that the communication device should display or interact in a second mode. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a block diagram illustrating a menu system that switches interactive modes. 
         FIG. 2  is a flowchart illustrating a method of operating a menu system that switches interactive modes. 
         FIG. 3  is a state diagram illustrating a correspondence between audio mode menus and text mode menus. 
         FIG. 4  is a flowchart illustrating a method of operating a menu system to switch interactive modes to suspend and reactivate an IVR session. 
         FIG. 5  is a block diagram illustrating a menu system that switches interactive modes. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  is a block diagram illustrating a menu system that switches interactive modes. In  FIG. 1 , menu system  100  comprises IVR server  102 , communication device  104 , audio IVR session  110 , data session  112 , and indicia  120 . IVR server  102  is operatively coupled to communication device  104  by audio IVR session  110 . IVR server  102  is operatively coupled to communication device  104  by data session  112 . 
     Communication device  104  may be any device, system, combination of devices, or other such communication platform capable of communicating audio and data with IVR server  102 . Communication device  104  may be, for example, an expanded function telephone, a mobile phone, a wireless phone, a wireless modem, a personal digital assistant (PDA), a computer system with a sound input, output, and an internet connection, a computer with Public Switched Telephone Network (PSTN) connection and a modem, a computer with a network card, a Voice over Internet Protocol (VoIP) phone, a Voice Over Packet (VOP) phone, or a soft phone, as well as other types of devices or systems that have a display and can exchange audio and data with IVR server  102 . 
     Audio IVR session  110  may be established between IVR server  102  and communication device  104  by any means known in the art for establishing two-way audio communication. For example, audio IVR session  110  may be established via a conventional PSTN. Audio IVR session  110  may be carried via a packet based network such as the internet. The network carrying audio IVR session  110  may be any network or collection of networks that couple, link, or otherwise operatively communicate audio communications between communication device  104  and IVR server  102 . 
     For example, the audio communication between IVR server  102  and communication device  104  may be carried via data packets using Voice over Internet Protocol or some other voice over packet protocol. The network carrying audio IVR session  110  may include secondary networks. For example, the network carrying audio IVR session  110  may include a backhaul network, a local network, a long distance network, a packet network, a PSTN, the internet, or any combination thereof, as well as other types of networks. 
     Data session  112  may be established between IVR server  102  and communication device  104  by any means known in the art for establishing two-way data communication. For example, data session  112  may be established using analog modems that communicate via a conventional Public Switched Telephone Network (PSTN). Data session  112  may be carried via a packet based network such as the internet. The network carrying data session  112  could be any network or collection of networks that couple, link, or otherwise operatively communicate data between communication device  104  and IVR server  102 . 
     For example, the data session  112  between IVR server  102  and communication device  104  may be carried via data packets using Internet Protocol (IP) or some other packet data protocol. The network carrying data session  112  may include secondary networks. For example, the network carrying data session  112  may include a backhaul network, a local network, a long distance network, a packet network, a PSTN, the internet, or any combination thereof, as well as other types of networks. The network carrying data session  112  may be the same or include the network that carries audio IVR session  110 . 
     In an embodiment, IVR server  102  develops and maintains an association between audio IVR session  110  and data session  112  that allow IVR server  102  to initiate or reestablish audio session  110 , data session  112 , or both. In an example, if communication device  104  is a VOP phone, then the IP address of communication device  104  may be used to associate audio IVR session  110  and data session  112 . A code may be used to separate audio IVR session  110  packets from data session  112  packets. Audio session  110 , data session  112 , or both, may be initiated or reestablished using either the phone number or IP address of communication device  104 . 
     In another example, if audio IVR session  110  and data session  112  are separate, then a network carrying audio IVR session  110  or data session  112  may maintain a database of user identifications, such as a phone number, that don&#39;t change. These user identifications may be associated with the current user IP addresses that periodically change. IVR server  102  may then associate audio IVR session  110  with data session  112  by receiving the caller number or other identification about audio IVR session  110 , and querying the database to retrieve the current IP address of communication device  104 . This allows IVR server  102  to initiate or reestablish data session  112  with communication device  104  by using the IP address assigned to communication device  104 . Audio IVR session  110  may be reestablished using the received caller number or other identification. An example of when audio IVR session  110  and data session  112  are separate would be a situation where audio session  110  is a wireless voice call or session and data session  112  uses a wireless IP link. 
     In another embodiment, IVR server  102  may send one or more text messages to communication device  104  using the phone number or other identification it received about audio IVR session  110 . Likewise, communication device  104  may send text messages to IVR server  102  using the number it called to establish audio IVR session  110 . These text messages may contain embedded data that performs the function of data session  112 . 
     When audio IVR session  110  is established, IVR server  102  starts sending at least one audio menu to communication device  104 . The spoken word audio menus communicated to communication device  104  via audio IVR session  110  may be prerecorded audio clips that detail menu options, or may be dynamically generated using text to speech technology. 
     The user may indicate their menu selections or other information by speaking, by pressing buttons, or some other input device such as a touch screen display. Pressing a button or a touch screen display typically causes communication device  104  to send an audio DTMF signal to IVR server  102  via audio IVR session  110 . Likewise, the audio of a user&#39;s spoken response is sent to IVR server  102  via audio IVR session  110 . An example of other information that may be conveyed via audio IVR session  110  is numeric information such as an account number or a telephone number. 
     When data session  112  is established, IVR server  102  and communication device  104  may send messages to each other via data session  112 . IVR server  102  may send messages to communication device  104  that cause communication device  104  to display indicia  120  that a second mode may be activated. The indicia  120  that communication device  104  displays may take the form of an icon. 
     The user may then indicate that the second mode is to be activated. The user may make this indication by selecting the indicia. For example, the user may select an icon by manipulating a pointer over the icon and then pressing an appropriate button. 
     When the user has indicated that the second mode is to be activated, communication device  104  sends a message indicating this to IVR server  102  via data session  112 . IVR server  102  may send messages to change the interactive mode of audio IVR session  110 , data session  112 , communication device  104 , or a combination thereof. As a result of IVR server  102  sending messages to change the interactive mode of audio IVR session  110 , the interactive mode of menu system  100  is changed. 
     For example, IVR server  102  may send messages that change the interactive mode of menu system  100  from audio menus to text menus. The text menus may be displayed by communication device  104 . IVR server  102  may send messages to communication device  104  that allow it to display a text menu. The user may then indicate responses to the text menu instead of the audio menu. These responses may be communicated to IVR server  102  using the audio IVR session  110 . In another example, the responses to the text version of an audio menu may be communicated to IVR server  102  using data session  112 . In addition, IVR server  102  may also send messages that instruct communication device  104  to change at least one indicia  120  to indicate that another mode, such as audio menus, may be reactivated. 
     In another example, IVR server  102  may send messages that change the interactive mode of menu system  100  from text menus to audio menus. In addition, IVR server  102  may also send messages that instruct communication device  104  to change at least one indicia  120  to indicate that another mode, such as text menus, may be reactivated. 
     In another example, IVR server  102  may send messages that change the interactive mode of menu system  100  from an active mode to a suspended mode. IVR server  102  may send messages to communication device  104  that instruct it to record information about audio IVR session  110 . The recorded information allows audio IVR session  110  and data session  112  to be disconnected and later restored to the same state or mode without further input from the user. Communication system  104  may then display indicia  120  that a suspended audio IVR session may be restored. 
     In another example, IVR server  102  may send messages that change the suspended mode of menu system  100  from a suspended mode to an active mode. To restore a suspended audio IVR session, communication device  104  may establish an audio IVR session  110  and data session  112 . Communication system  104  may then communicate recorded information about the suspended audio IVR session via data session  112  so that IVR server  102  may restore IVR system to the same state or mode without further input from the user. 
     In another example, IVR server  102  may send messages that change the interactive mode of menu system  100  from a first active menu to a second active menu within the same audio IVR session. In another example, IVR server  102  may send messages that change the interactive mode of menu system  100  from a currently active audio IVR session to a second audio IVR session. An example of a second audio IVR session is an audio IVR session with a different IVR server. Another example of a second audio IVR session is an audio IVR session that is typically reached by establishing a different audio IVR session such as by dialing a different phone number. 
       FIG. 2  is a flowchart illustrating a method of operating a menu system that switches interactive modes. The method shown in  FIG. 2  may be performed by one or more elements of menu system  100 . An audio IVR session is established to provide audio menus to a communication device ( 202 ). For example, the audio IVR session may be established between IVR server  102  and communication device  104 . 
     A data session is established with the communication device ( 204 ). For example, a data session may be established between IVR server  102  and communication device  104 . The data session may be used to send and receive messages to and from the communication device. 
     The communication device is instructed, via the data session, to display indicia that a second mode may be activated ( 206 ). For example, IVR server  102  may send messages to communication device  104  that cause communication device  104  to display indicia that a second mode may be activated. The indicia that communication device  104  displays may take the form of an icon. 
     A message is received that indicates a second mode is to be activated ( 208 ). For example, communication device  104  may send a message to IVR server  102  indicating that the second mode is to be activated. This message may be the result of the user indicating that the second mode is to be activated. The user may have made this indication by selecting the indicia. For example, the user may have selected the icon that the communication device  104  was instructed to display in step  206 . The user may have selected this icon by manipulating a pointer over the icon and then pressing an appropriate button on the communication device. 
     In another example, the message received that indicates a second mode is to be activated is a message from the user. This message may take the form of the user indicating that the second mode is to be activated. The user may have made this indication by selecting the indicia. 
     The second mode is activated ( 210 ). For example, the mode of menu system  100  may change from audio menus to text menus. In another example, the mode of menu system  100  may change from text menus to audio menus. In another example, the mode of menu system  100  may change from an active mode to a suspended mode. In another example, the mode of menu system  100  may change from a suspended mode to an active mode. In another example, the mode of menu system  100  may change from a first active menu to a second active menu within the same audio IVR session. In another example, the mode of menu system  100  may change from a currently active audio IVR session to a second audio IVR session. In another example, the mode of menu system  100  may change to a previously active menu. In another example, the mode of menu system  100  may change by refreshing or repeating a currently active menu. In another example, the mode of menu system  100  may change by restarting the recitation of an audio menu. In another example, the mode of menu system  100  may change by speeding up or slowing down the recitation of an audio menu. 
       FIG. 3  is a state diagram illustrating a correspondence between audio mode menus and text mode menus. As described above, a second mode that may be activated is a switch between audio and text menus. Because the menu structure between text and audio menus may be different, a correspondence between the audio menus and the text menu should be maintained. To illustrate this, an example of this correspondence is shown in  FIG. 3 . 
     In  FIG. 3 , example audio mode menus  302  and  304  are shown. Also in  FIG. 3 , text mode menus  352  and  356  are shown. Text mode also has wait for response states  354  and  358 . Audio mode menus  302  and  304  have tag values of 001A and 002A, respectively. Text mode menus  352  and  356  have tag values of 001T and 003T, respectively. Text mode wait for response states have tag values of 002T and 004T, respectively. 
     The audio mode menus start with audio mode menu  302  which presents the audio “Please enter your account number.” Audio mode menu  302  may repeat this audio until the user responds. Once the user has responded to audio mode menu  302 , the user is presented with audio mode menu  304 . Audio mode menu  304  presents the audio “Please select: one for banking; two for stock; or three for an operator.” Audio mode menu  304  may repeat this audio until the user responds. This process may continue for additional audio mode menus. 
     While audio mode menu  302  is being presented to the user, the menu system may transition to text mode menus. Audio mode menu  302  would transition to text mode menu  352 . Text mode menu  352  displays “Account number?” Text mode would then transition to wait for response state  354  while text mode menu  352  is displayed. 
     Once the user has responded, text mode would transition to text mode menu  356 . Text mode menu  356  displays indicia for: “1=Banking; 2=Stock; 3=Operator.” Text mode would then transition to wait for response state  358 . This process may continue for additional text mode menus. 
     While audio mode menu  304  is being presented to the user, the menu system may transition to text mode menus. Audio mode menu  304  would transition to text mode menu  356 . Text mode would then transition to wait for response state  354  while text mode menu  356  is displayed. 
     While text mode is in wait for response state  354 , the menu system may transition to audio mode menus. Text mode wait for response state  354  would transition to audio mode menu  302 . Similarly, while text mode is in wait for response state  358 , the menu system may transition to audio mode menus. Text mode wait for response state  358  would transition to audio mode menu  304 . 
     To facilitate these transitions, tags are assigned to each menu or state in both text and audio mode. A mapping of tags between the menus allows the transitions to take place in an orderly manner without skipping a menu or confusing the user. To illustrate, consider the audio mode to text mode transitions shown in  FIG. 3 . These transitions may be represented by mappings that associate tag=001A to tag=001T and tag=002A to tag=002A. The text mode to audio mode transitions shown in  FIG. 3  may be represented by the mappings that associate tag=002T to tag=001A and tag=004T to tag=002A. Any unassociated tags may not have a corresponding menu or state in the audio or text mode. Accordingly, the system may not allow the transition until a menu or state is reached that has a tag with an association. This is illustrated in  FIG. 3  by the text mode menus  352  and  356  whose tags, 001T and 003T, respectively, are not associated with an audio mode tag. Accordingly, the system would wait until the text mode menus  352  or  354  were displayed and it was waiting for a response (i.e., states  354  and  358 , respectively) before it would allow a transition into audio mode. 
       FIG. 4  is a flowchart illustrating a method of operating a menu system to switch interactive modes to suspend and reactivate an audio IVR session. An audio IVR session is established to provide audio menus to a communication device ( 402 ). For example, the audio IVR session may be established between IVR server  102  and communication device  104 . 
     A data session is established with the communication device ( 404 ). For example, a data session may be established between IVR server  102  and communication device  104 . The data session may be used to send and receive messages to and from the communication device. 
     The communication device is instructed, via the data session, to display indicia that the audio IVR session may be suspended ( 406 ). For example, IVR server  102  may send messages to communication device  104  that cause communication device  104  to display indicia that the audio IVR session may be suspended. The indicia that communication device  104  displays may take the form of an icon. Example icons may be similar to a stop sign or the symbol on the pause button of a DVD player. 
     A message is received that indicates the audio IVR session is to be suspended ( 408 ). For example, communication device  104  may send a message to IVR server  102  indicating that the audio IVR session is to be suspended. This message may be the result of the user indicating that the audio IVR session is to be suspended. The user may have made this indication by selecting the indicia. For example, the user may have selected the icon that the communication device  104  was instructed to display in step  406 . The user may have selected this icon by manipulating a pointer over the icon and then pressing an appropriate button on the communication device. 
     In another example, the message received that indicates the audio IVR session is to be suspended is a message from the user. This message may take the form of the user indicating that the audio IVR session is to be suspended. The user may have made this indication by selecting the indicia. 
     The communication device is instructed to store data associated with the audio IVR session and also display an indicia that the audio IVR session may be reactivated ( 410 ). The data associated with the audio IVR session that the personal communication device stores may include, but is not limited to: the phone number dialed to initiate the audio IVR session; a tag associated with the currently active menu; a unique identifier of the audio IVR session; and, some or all of the already selected menu choices or data entries. 
     After enough data associated with the audio session to restore the audio IVR session to the same point without further user intervention is stored, the audio IVR session is suspended ( 412 ). To suspend the audio IVR session, the data session, the audio IVR session, or both, may be disconnected. 
     A message is received that indicates the audio IVR session is to be reactivated ( 414 ). This message may take the form of the user indicating that the audio IVR session is to be reactivated. For example, the user may have made this indication by selecting the indicia. In another example, the user may have made this indication by dialing the same phone number dialed to originally initiate the now suspended audio IVR session. 
     The audio IVR session is reactivated ( 416 ). For example, the audio IVR session may be reactivated by redialing the phone number dialed to initiate the suspended audio IVR session. A data session may also be reestablished. The data session may be used to communicate the data associated with the suspended audio IVR session to allow the audio IVR session to be restored to the point where it was suspended without further user intervention. In another example, the data associated with the suspended audio IVR session is used to replay the user&#39;s menu choices and data entries. By replaying the user&#39;s menu choices and data entries, the audio IVR session may be restored to the point at which it was suspended without user intervention. In addition, the user&#39;s menu choices and data entries may be replayed without waiting for the recitation of the audio menus to complete. 
       FIG. 5  is a block diagram illustrating a menu system that switches interactive modes. Menu system  500  may operate as described above. Menu system  500  comprises communication device  501 , IVR server  580 , audio communication link  582 , and data communication link  584 . 
     Communication device  501  includes communication interface  520 , processing system  530 , and user interface  560 . Communication interface  520  includes audio interface  522  and data interface  524 . Audio interface  522  is operatively coupled to IVR server  580  via audio communication link  582 . Data interface  524  is operatively coupled to IVR server  580  via data communication link  584 . 
     Processing system  530  includes storage system  540 . Storage system  540  stores software  550 . Storage system  540  also stores icons and associated data  552 . Storage system  540  may also store other indicia and associated data. Processing system  530  is linked to communication interface  520  and user interface  560 . 
     Communication device  501  could be comprised of a programmed general-purpose computer, although those skilled in the art will appreciate that programmable or special purpose circuitry and equipment may be used. Communication device  501  may be distributed among multiple devices that together comprise elements  520 - 572 . 
     Communication interface  520 , audio interface  522 , and data interface  524 , may comprise one or more of: a network interface; wireless network interface; modem; wireless modem; port; telephone jack; telephone plug; transceiver; or, some other wired or wireless communication device. Communication interface  520 , audio interface  522 , and data interface  524 , may be distributed among multiple communication devices. 
     Processing system  530  may comprise a computer microprocessor, logic circuit, or some other processing device. Processing system  530  may be distributed among multiple processing devices. 
     User interface  560  includes display  562 , voice interface  564 , and text interface  566 . Text interface  566  may comprise a keyboard, keypad, mouse, stylus, touch screen, or some other type of user device used for text input. Voice interface may comprise a microphone and speaker. Display  562  displays indicia  570  and  572 . User interface  560  and its elements may be distributed among multiple user devices. 
     Storage system  540  may comprise a disk, tape, integrated circuit, server, or some other memory device. Storage system  540  may be distributed among multiple memory devices. 
     Processing system  530  retrieves and executes software  550  from storage system  540 . Processing system  530  also retrieves icons and associated data  552 . Software  550  may comprise an operating system, utilities, drivers, networking software, and other software typically loaded onto a computer system. Software  550  could comprise an application program, firmware, or some other form of machine-readable processing instructions. When executed by processing system  530 , software  550  directs processing system  530  to operate as described herein. 
     The above description and associated figures teach the best mode of the invention. The following claims specify the scope of the invention. Note that some aspects of the best mode may not fall within the scope of the invention as specified by the claims. Those skilled in the art will appreciate that the features described above can be combined in various ways to form multiple variations of the invention. As a result, the invention is not limited to the specific embodiments described above, but only by the following claims and their equivalents.
A method for switching interactive modes in a menu system is disclosed. An audio interactive voice response session is established to provide audio menus to a communication device. A data session with said communication device is also established. The data session is used to instruct the communication device to display indicia that a second mode may be activated. The indicia may be an icon indicative of the second mode. A user selection of the indicia on the communication device sends a message to the IVR system indicating that the second mode is to be activated. The second mode may be a text mode wherein text menus are presented to the user instead of audio menus. The second mode may be a suspend mode whereby the IVR session is halted at its present menu choices and saved for later reactivation.