This interface is implemented by the  ObjRef.ChannelInfo property. It provides access to transport specific information contributed by the channels that are able to receive calls in the process or appdomain where the object lives. This interface might also be used when building custom  ObjRef classes. When an existing object instance is marshaled to produce an  ObjRef, the  IChannelInfo.ChannelData is copied from the channel (see  IChannelReceiver) for each registered channel and stored in the  ObjRef. When the  ObjRef is unmarshaled at its destination, the the  IChannelInfo.ChannelData provided through the  IChannelInfo interface can be examined and used by corresponding channels in that process or appdomain to create a transport message sink that manages the communication between the proxy and the server object.