Additional information available:

COMMUNICATIONSERVICE

  The START COMMUNICATION command is used to initialize the internet
  software.  The only internet commands which can be issued prior to
  the START COMMUNICATION command is the SET and SHOW  COMMUNICATION
  commands.

  Refer to the SET COMMUNICATION command for information on  setting
  communication parameters.

  Any automatic route records defined in the UCX$ROUTE database will
  be deleted.

  Format:
    START COMMUNICATION

  The START SERVICE command is used to  initialize  communication  for
  the specified service.

  This command may only be issued after the internet software has been
  initialized (see START COMMUNICATION).

  The only supported services for UCX V1.2 are: RLOGIN and TELNET.

  The service name is required unless the /ALL qualifier is specified,
  and the service name and /ALL qualifier cannot both be  specified in
  the same command.

  Format:
    START SERVICE [service_name]

Additional information available:

/ALL

  Starts all supported services.  The /ALL qualifier and a service name
  cannot both be specified in the same command.

  Format:
    START SERVICE /ALL