cdrmname is the name of a CDRM capable of requesting a VR-based (virtual route-based) TG connection. cdrmname can be a network-qualified name in the form netid.name.

type is CDRM when TGN=255 is specified on the MODIFY TGP command.

cpname is the name of the adjacent control point. If cpname is session-capable, VTAM issues cpname as a network-qualified name in the form netid.name.

tgn is the transmission group number.

type is CP when TGN is specified as anything other than 255 on the MODIFY TGP command.

linename is the name of an active line (NCP/Token-Ring Interconnection [NTRI]) that has the connection network function defined.

portname is the name of an active port (external communication adapter [XCA]) that has the connection network function defined.

puname is the name of an active type 2.1 physical unit.