ROUTING INDICATOR (RI)

1. A group of letters assigned to indicate: (a) the geographic location of a station; (b) a fixed headquarters of a command , activity, or unit at a geographic location; and (c) the general location of a tape relay or tributary station to facilitate the routing of traffic over the tape relay networks. [ JP1 ] 2. In a message header , an address , i.e., group of characters, that specify routing instructions for the transmission of the message to its final destination. ( 188 ) Note: Routing indicators may also include addresses of intermediate points.