property BeepChannels.Item (Index) as IBeepChannel
Returns reference to channel from the collection.

  TypeDescription 
   Index as Long Long integer value as index of the channel in the collection. 
   IBeepChannel Return value. Reference to the channel that match requested Index. 
 

Item property is used to access specific channel from collection of all currently opened channels. Index is not unique - please don't confuse it with Channel ID information.