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Why you may want to replace your remote terminal server


A telecommunications company recently improved its operations by installing an Asentria SNMP-Link in place of a conventional remote terminal server. For approximately the same price as a terminal server, the SNMP-Link offers much greater flexibility. SNMP-Link simplifies remote equipment access with TCP/IP or modem protocols, custom alarms and messaging, and complete TCP/IP network capabilities. These features help the company configure, monitor and control its uninterruptible power supply (UPS). SNMP-Link acts primarily as a terminal server, but it offers many other capabilities.


The company’s system configuration utilizes multiple contact closure alarms to determine whether a UPS alarm is the result of an internal error, or an input power failure. The SNMP-Link’s additional serial port is used to monitor environmental and analog sensors. It allows the staff to monitor the temperature of their equipment room to detect fluctuations that threaten electronic equipment. When a high/low temperature alarm occurs or an AC unit fails, the SNMP-Link generates SNMP trap alarms, and sends a message to the network manager via a pager. A built-in output relay activates a backup AC unit so the equipment room will not over-heat while technicians drive to the site. The SNMP-Link significantly decreases the company’s response time to failed air conditioning units, and it provides a simple and effective way to protect critical equipment in the event of extreme conditions.


The SNMP-Link can also be used to monitor fuses, door closures, smoke detectors, machinery, legacy equipment and many other devices. Additional SNMP-Link features include: complete SNMP management MIB files and trap functionality; 12 or 14 contact closures and two or four output relays; modem access; alarms from contact closures, environmental sensors, and ASCII evaluation; an additional serial port; a built-in temperature sensor; and remote configuration of the SNMP-Link itself.