Westermo TD-23 LV is a leased line V.23 modem designed for communication on 2- or 4-wire copper cable (twisted pair) using the V.23 standard. Its asynchronous full/half duplex or simplex transmission makes it suitable for various applications, including multidrop networks, extending RS-422/485 buses, and traffic control installations. The TD-23 LV's wide range of configurable settings allows for optimization in different operating conditions, including transmission level, minimum level detection, and carrier activation mechanisms.