RFC 2 (rfc2) - Page 2 of 10

Host software

RFC 2


         1b1c The primary link is treated like a teletype connected over
         a normal data-phone or direct line by the remote HOST, i.e. the
         remote HOST considers a primary link to be a normal teletype
         user.

         1b1d The primary link is used for passing (user) control
         information to the remote HOST, e.g. it will be used for
         logging in to the remote host (using the remote hosts standard
         login procedure).

   1c Auxilliary Links

      1c1 A user program may establish any number of auxilliary links
      between itself and a user program in a connected HOST.

         1c1a These links may be used for either binary or character
         transmission.

         1c1b Auxilliary links are local to the sub-system which
         establishes them, and therefore are closed when that subsystem
         is left.

2 MANIPULATION OF LINKS

   2a Control links

      2a1 The control link is established at system load time.

      2a2 The status of a control link may be active or inactive

         2a2a The status of the control link should reflect the
         relationship between the HOSTs.

   2b Primary Links

      2b1 Primary links are established by a user or executive call to
      the monitor

         2b1a The network identification number of the HOST to be linked
         to must be included in the call

         2b1b An attempt to establish more than one primary link to a
         particular HOST will be regarded as an error, and the request
         will be defaulted

         2b1c Standard Transmission Character Set





Duvall