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sscop(1)

NAME

     sscop -- SSCOP transport protocol

SYNOPSIS

     sscop [-Fbefhirwx3] [-V X] [-W N] [-a p=v] [-l N] [-t t=m] [-v X]

DESCRIPTION

     The sscop tool implements the Q.2110 transport protocol.  Normally the
     program reads from standard input and sends this input over the SSCOP
     protocol on the standard output file descriptor. This means, that the
     standard output file descriptor should be connected in read-write mode.
     The program takes the following arguments:

     -F      Use frameing on the SSCOP connection (see the -f option).

     -V X    Set the verbose flag to the hex value X.

     -W N    Set the initial SSCOP window to N.

     -a p=v  Set SSCOP parameter p to the value v.  The following parameters
	     may be set:

	     j=N     Set the maximum SSCOP-UU data size to N octets.

	     k=N     Set the maximum SSCOP SDU data size to N octets.

	     cc=N    Set the parameter MaxCC (maximum number of connection
		     control message re-transmissions) to the value N.

	     pd=N    Set the parameter MaxPD (maximum acceptable number of
		     outstanding unacknowledged SD PDUs before sending a POLL)
		     to the value N.

	     stat=N  Set the parameter MaxSTAT (maximum number of elements
		     placed in a STAT PDU) to the value N.

     -b      Enable the ATM-Forum SSCOP robustness enhancement.

     -e      Exit when there is an end of file condition on the input file or
	     the SSCOP indicates a release confirmation.

     -f      Use the framing protocol for communication over the SSCOP link.
	     See frame(l) (libbegemot) for framing.

     -h      Print a short help information and exit.

     -i      Try not to read from the user input file descriptor. Assume that
	     we a receiving only.

     -l N    Loose every Nth message. This is used for testing.

     -r      Revert user and SSCOP file descriptors. That means, that user
	     input and output is done on standard output and SSCOP input and
	     output on standard input.

     -t t=m  Set SSCOP timer t to m milliseconds. The following timers may be
	     set:
		     maximum length of the transient phase.

	     nr=m    Set the no-response timer to m.  This timer controls the
		     maximum time between two received STAT PDUs before the
		     connection is aborted.

	     idle=m  Set the idle timer to m.  This timer controls the length
		     of the idle phase.

     -v X    Set the SSCOP library verbose flag to the hex value.

     -w      Don't start the SSCOP protocol. Wait for a establish indication
	     from the remote side.

     -x      Enable to POLL after retransmission flag.

     -3      Send user output to file descriptor 3.

EXAMPLES

     The following command line sends the file Makefile over a pipe (this
     depends on the feature that pipes are bi-directional):

     cat Makefile | sscop -reF | sscop -weF

SEE ALSO

     libunimsg(3)

STANDARDS

     The implemented protocol conforms to ITU-T recommendation Q.2110.

AUTHORS

     Hartmut Brandt <harti@freebsd.org>

FreeBSD 5.4		       October 28, 2003 		   FreeBSD 5.4

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