The RV-07B is a 19″ rack which can hold up to 16 Westermo TR-36B modems as well as two PS-20 power supplies. The rack is designed to harsh industrial standards in applications where a number of modems are required in the same location. The rack has passed extensive approvals testing by both Westermo and external test houses, showing the rack can operate in environments with a high level of electromagnetic interference. Using the RV-07B and TR-36B allows a number of modems to be connected to a backplane thus eliminating unnecessary wiring and also saving space. The modems slide into the chassis from the front and connect to the backplane that provides all the connectors for the RS-422/485, RS-232, PSTN and Leased Line interfaces. The RV-07B can be fully powered by either one or two Westermo PS-20 power supplies. With two power supplies, redundant supply is possible. In case of a power failure, the second power supply activates and an alarm signal can be set up through the built-in fault relay. The RV-07B rack is designed for use with the Westermo TR-36B modem, which is an analogue V.34 PSTN and Leased Line modem supporting modulation data rates up to 33.6 kbit/s. For more information, please refer to the TR-36B documentation.