NCast Presentation Recorder Reference Manual
11. Presentation Recorder Interfaces
11.1. S
ERIAL
I
NTERFACE
Commands to control the Presentation Recorder over an RS-232 style serial interface are documented in
the
Presentation Recorder Serial Interface Specification
. Please refer to that document for complete
details.
11.2. T
ELNET
I
NTERFACE
Commands to control the Presentation Recorder over an IP network interface using industry standard
Telnet protocol are documented in the
Presentation Recorder Serial Interface Specification
. Please refer
to that document for complete details.
NCast offers several example programs which allow operation of the Presentation Recorder using the
Telnet Interface. One such program is called the “Presentation Recorder Management System” and
there is a version written in Java. See the “Download” area of the NCast web site. An example of the
interface implemented by PMS is shown here:
For simple operations such as starting and stopping a Presentation Recorder from a controlling system,
simple scripts will be adequate. For example, to start a Presentation Recorder here is a sample script:
#!/bin/bash
#
# Starts Presentation Recorder session using telnet interface
if [ $# -ne 3 ]; then
echo "This script starts a Presentation Recorder session using the telnet interface."
echo "Synopsis: start.sh address password channel"
exit
fi
ADDRESS=$1
PASSWORD=$2
CHANNEL=$3
( echo "IdTelnet,002,$PASSWORD"
sleep 1
echo "C$3"
sleep 1
echo "QT"
sleep 1 ) | telnet $ADDRESS 7474 >& /dev/null
Stopping a session utilizes this script:
NCast Corporation
Revision 1.0
Page 89
