c7ed8d5c_all_Control__CCXML_Version_1_0__Required
[Attribute Name] conferenceid [Type] string [Details] 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 connection the value must be undefined. [Required] 
false
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Voice Browser Call Control: CCXML Version 1.0