df570f0a_all_Control__CCXML_Version_1_0__Description
[Name] joindirection [Required] false [Attribute Constraints] This attribute is only valid in conjunction with the joinid attribute, otherwise ignored. [Type] ECMAScript Expression [Default Value] both [Valid Values] both calltransmit callreceive [Description] 
An ECMAScript expression that defines the direction of the media flow between the newly created connection, and the existing connection/conference/dialog referenced by joinid: both Specifes a full duplex connection where the media flows in both directions. calltransmit The new connection transmits media to the referenced connection/conference/dialog but does not receive any media streams. callreceive The new connection receives media from the referenced connection/conference/dialog but does not transmit any media streams.
Voice Browser Call Control: CCXML Version 1.0