public abstract bool Invite(
	MediaDescription mediaDescription,
	CallState currentCallState
)

Public MustOverride Function Invite ( 
	mediaDescription As MediaDescription,
	currentCallState As CallState
) As Boolean

public:
virtual bool Invite(
	MediaDescription^ mediaDescription, 
	CallState currentCallState
) abstract

abstract Invite : 
        mediaDescription : MediaDescription * 
        currentCallState : CallState -> bool