[Required] false [Attribute Constraints] Must not occur with the 'typeexpr' attribute. [Type] URI [Default Value] none [Valid Values] http://www.w3.org/TR/scxml/, http://www.w3.org/TR/ccxml/, http://www.w3.org/TR/voicexml30/, http://www.w3.org/TR/voicexml21/ plus other platform-specific values. [Description] A URI specifying the type of the external service. See below for details. [Name] 
type
t y p e
t y p e e x p r
s r c
s r c e x p r
i d
i d l o c a t i o n
n a m e l i s t
a u t o f o r w a r d