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![]() HP OpenVMS Systemsask the wizard |
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The Question is: This is an industrial application that runs on OpenVMS Alpha system. It essentailly gathers real-time data from various industrial instruments, some of them are connected directly to DECserver 700 serial ports and others via modems attached to DECserver ports. The application uses QIO system services for these LAT devices. The management is planning to move from LAT to TCP/IP based terminal servers. My question is how do I access devices attached to terminal servers in TCP/IP environment? Can I issue host initiated connection requests to the terminal server ports? The Answer is : TCP/IP lacks some of the capabilities of LAT in this environment. Please see the existing discussions of Reverse Telnet for how to establish an outbound connection -- depending on the particular terminal server, you may well end up using other approaches to communicate with the device.
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