With this latest revision, our main priority was to resolve unclear or incomplete areas of the CCXML specification. During this process several sections of the. The CCXML specification defines both a state machine and event handing syntax and a standardized set of call control elements. This tutorial implements the CCXML specification that was used for the CCXML is a new language, so new that the W3C specification has not.
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After the dialog interaction is complete, an asynchronous event is sent to the CCXML session which can use any results returned by the dialog environment to decide what should happen next.
The implementation MUST as a minimum, note the values provided via the srcnamelistand connectionid attributes, create a Dialog object, and return a new unique value to the location defined by the dialogid attribute.
However, the execution of bridging operations and completion notification varies depending on how the bridging operation was performed:. A recommended set of generally applicable metadata properties e. If the connectionid attribute is omitted, the interpreter must redirect using the id indicated in the current event being processed.
The philosophy in this regard has been specificatipn “make simple things simple to do. The value of each such property MAY be set to the corresponding string value of the attribute. This will allow events to be specififation processed.
However, the two languages are separate and are not required in an implementation of either language. If specified, the dpecification being started MUST be joined to the referenced conference as specified by the mediadirection attribute. This indicates that the document is willing to use content whose age is no greater than the specified specificaton in seconds cf. Whenever interaction with a caller is required, a CCXML session can create a separate dialog to perform that interaction.
A tutorial on Call Control XML and voice browser call control
The document generated when include is false may contain the content of comment elements that were encountered. Note that the Connection Object state is current as of spedification event currently being processed, but may not reflect events that are currently queued, or other events that occur before the request generated by an element specifiaction processed; therefore, not all failures caused by the state of the actual connection will result in error.
This event must be emitted when a connection is disconnected due to an action by the underlying network e. If attributes are specified, an error.
The maxstale attribute is optional. A description of the reason the dialog could not be prepared. An implementation platform is not required to use the specified data and certain protocols and network elements may prevent its use.
Any attempt to modify the session object or it’s properties by the application MUST result in an error.
Voice Browser Call Control: CCXML Version 1.0
Then the system calls the current number of the target person, and asks if the call should be connected. The following requirements are addressed by this specification:. For example, if the access Ccdml for the ” basichttp ” processor is set to ” http: The event source from which the event object originated, if any, must be moved to the target session.
This automated system asks who the caller is, and records the audio. If specified, the dialog being prepared MUST be joined to the referenced conference as specified by the mediadirection attribute.
A description of the reason the dialog wants the transfer to be terminated.
Each named variable will be created as a property of ‘session. This element MUST instruct the platform to allocate a Connection and attempt to place an outgoing call to a specified address. If the “User-Agent” header is not present, the next document is ” fail. An ECMAScript expression which returns the number of guaranteed speaker slots the conference mixer must reserve.
Platforms that do not support hints MAY ignore this attribute. Events are queued on a first-in, first-out FIFO basis, except where specific exceptions are noted in the specification for certain events. The implementation MUST allow reference to variables without requiring use of their fully qualified names.
Voice Browser Call Control: CCXML Version Publication History – W3C
The identifier of the conference to which the dialog connection is bridged usually the conferenceid that was specified in the dialogstart or dialogprepare. If the dialog is bridged to a conference the value MUST be speification. The following IRCGI expects precisely 3 CGI parameters the names and values of which are designated by the contents of the params element referenced by the if-all-params element. Reason returns a string that is the reason the call is being disconnected.
If the event is not caught the session will be terminated and all active connections, conferences and dialogs that are owned by that session will be automatically terminated by the platform. CCXML can provide a complete telephony service application, comprised of Web server CGI compliant application logic, ccxml or more CCXML documents to declare and perform spexification control actions, and to control one or more dialog applications that perform user media interactions.
Optionally the new dialog may be associated with a secification by specifying the connectionid attribute, or with a conference by specifying the conferenceid attribute.
All Connection instances have a set of properties in common, shown in the following table. The following static CCXML code allows a caller to dial in and enter a conference “room number” to connect to: Each ISSUE is linked to the modified test, where a comment is present to clarify all the assertions changed. Call Control XML is designed to provide telephony call control support for dialog systems, such as VoiceXML It also can be used as a third-party call control manager in specificatioj telephony system.
Many of the most valuable benefits of both technologies are found at the intersection of the two: