This attribute contains the unique X.25 address which identifies this
RemoteGroup. It should correspond to the called address in X.25
incoming call packets which are to be directed to this
RemoteGroup. This allows calls received from the link to be
directed to the appropriate RemoteGroup based on the called
address in the X.25 call packet. The RemoteGroup components
allow the X.25 interface to be shared amongst a number of Protocol
Ports (and ultimately Virtual Routers) because each RemoteGroup
is coupled with a specific ProtocolPort through its
linkToProtocolPort attribute.