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.