o  protocol

    Transport protocol used by this transport service, as specified
    by the user when this service was created. (See the create
    command description for a list of possible values.)

 o  tsel

    Transport selector used by the OSI Transport Module to bind
    incoming connection requests to session control.

    With Tru64 UNIX, the TSEL value is specified in a create command.
    This attribute is not applicable for NSP transport.