Other Live Captioning Methods
Modem
Standard RJ-11 connection. Connect to a phone line to enable dial-up captioning and provide your captioner with
the telephone number associated. Using a PBX or other digital non-POTS system is NOT recommended - many of
these are not compatible with modem communications. Once connected, the LED on the front panel of your
encoder labeled “MDM” will turn green.
Telnet
Enable telnet via the encoder’s web interface and select a port. Configure your firewall to allow a captioner to get
to your encoder on the designated port and then give your caption service provider the port number and public
IP address.
RS-232 / RS-422 (Teleprompters or Other Devices)
See hardware section for cabling detail. Serial port settings are controlled through the web interface of the
encoder by selecting Serial Ports from the left side menu or by navigating to System Setup > P1 Mode from the
front panel LCD menu of the encoder. The HD492 supports RS-232, RS-422, and RS-422 Sony (with RS-422 and
RS-422 Sony options configurable on Port 1 only). Default settings are 1200 baud, odd parity, and 7 data bits.
Customized settings are sticky after power cycles. Modem will automatically take priority when active so that the
prompter can be overridden as desired.
Figure 8: Serial Port Settings in the Web Interface
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