Subscription CreateNewSubscription(
	IUserAgentInstance owner,
	SIPAddress account,
	SIPAddress contact,
	TransportInfo transportInfo,
	string eventType,
	string phoneNumber = ""
)

Function CreateNewSubscription ( 
	owner As IUserAgentInstance,
	account As SIPAddress,
	contact As SIPAddress,
	transportInfo As TransportInfo,
	eventType As String,
	Optional phoneNumber As String = ""
) As Subscription

Subscription^ CreateNewSubscription(
	IUserAgentInstance^ owner, 
	SIPAddress^ account, 
	SIPAddress^ contact, 
	TransportInfo^ transportInfo, 
	String^ eventType, 
	String^ phoneNumber = L""
)

abstract CreateNewSubscription : 
        owner : IUserAgentInstance * 
        account : SIPAddress * 
        contact : SIPAddress * 
        transportInfo : TransportInfo * 
        eventType : string * 
        ?phoneNumber : string 
(* Defaults:
        let _phoneNumber = defaultArg phoneNumber ""
*)
-> Subscription